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US698827A - Controller for elevators. - Google Patents

Controller for elevators. Download PDF

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Publication number
US698827A
US698827A US7481301A US1901074813A US698827A US 698827 A US698827 A US 698827A US 7481301 A US7481301 A US 7481301A US 1901074813 A US1901074813 A US 1901074813A US 698827 A US698827 A US 698827A
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Prior art keywords
car
motor
controller
power mechanism
shaft
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US7481301A
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Francis K Fassett
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
    • B66B13/20—Lock mechanisms actuated mechanically by abutments or projections on the cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/08—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, in the cars or cages for direct control of movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/46—Adaptations of switches or switchgear
    • B66B1/52—Floor selectors

Definitions

  • TN Nanms Farms co, mom-mvo.. wAsmNa'roN. D. c.
  • FRANCIS FASSETT OF ST. LOUIS, MISSOURI, ASSIGNOR TO LEO EHRLIOII,
  • FIG. 5 shows a bottom plan view of the cage with myimproved mechanism in position thereon, showing the system of wiring.
  • Fig. 6 is a horizontal sectional view showing details of the door-operated switch.
  • Fig. 7 is a side elevational View of the door-operated switch.
  • Fig. 8 is a sec- -tional view on line 8 8, Fig. 7.
  • Fig. 9 is a side elevational view ofthe pole-changing switch arranged on the shaft of the sheave over which the hauling-ropes pass at the upper portion of the building.
  • Fig. l0 is a sectional view on line 10 10
  • Fig. 1l is a top planview of the pole-changing switch.
  • Fig. 12 is an end elevational view of the switch arranged upon the shaft upon which the operating lever or handle is mounted.
  • Fig. 13 is a side elevational view of the same.
  • Fig. let is a side elevational view of the mechanism mounted upon the shaft of the operating-lever reversing the rocking-shaft.
  • Fig. 15 is an end elevational view of one of the elements of said mechanism.
  • Fig. 16 is an end elevational view of said mechanism.
  • Fig. 18 is a diagrammatic view of a modied form of my invention
  • Fig. 19 is a dia-I grammatic view of another modified form of my invention.
  • This inventiony relates to a controller for elevators, being designed particularly,though not exclusively, for use in connection with passenger-elevators.
  • the object of. this invention is to prevent the cage from moving any considerable distance from the floor at which it is arrested while the door is open, although the operator is permitted to manipulate the lever, wheel, or handle, as the case may be, to startthe elevator at less than full speed; but in no instance is it possible for the operator to throw and hold the controller to either ex- 6o treme position in leaving the door unless the door is closed.
  • My present invention contemplates a movement of the controlling devices, which will enable the cage to travel a short distance above or below the floor, notwithstanding the fact that the door may be open; but when the cage reaches a predetermined limit the con- 8o trolling devices are. automatically reversed if the door is still open'and the cage returned toward the level of the floor which it had attempted to leave.
  • InV elevators where the doors are controlled 8 5 by the operator and no' means are provided for locking the controlling device on the elevator-cage or for cooperating with said controllingdevice, so as to prevent the departure of the elevator from a door, accidents 9o frequently occur.
  • Passengers attempt to enter or leave the car when the door is open or while the door is being either opened or closed and after the operator has movedthe controlling device to start the cage away sequently injuries of a serious nature are apt to be inflicted.
  • C011- Ioo My present invention is designed to be applied to existing forms of controlling devices; and it consists, generally stated, in means coacting with said controlling device to reverse the movement thereof in the event that the operator attempts to leave a floor while the door is still open.
  • a limited uninterrupted travel of the cage is permitted-say from twelve to eighteen inches above or below the floor; but this travel is insufficient to cause the elevator to inflict any injury to a person attempting to get into or out of the cage.
  • the mechanism which eoacts with the controlling device is inoperative, and therefore said controlling device may be operated as usual.
  • the invention consists in providing a motor which is only energized and effective when the door is open for cooperating with the controlling lever, wheel, or hand-rope in such manner that any movement thereof tending to cause the cage to travel beyond the prescribed limits will be reversed by the motor and the cage restored to the iioor it attempted to leave.
  • This motor is ineffective while the cage is within the prescribed limits of travel above and below the floor; but theinstant the cage passes beyond said limits the motor is effectively engaged with the controlling mechanism of the car to reverse the same, and consequently changes the direction of travel of the cage, tending ⁇ to restore said cage to the floor which it had attempted to leave.
  • Another feature of the invention is the provision of a pole-changing switch, where direct currents are employed, for changing the direction of rotation of the armature-shaft of the motor at every change of direction of travel of the cage.
  • Another feature of the invention resides in the provision of a magnet in the motor-circuit for effectively engaging the motor with the controlling ⁇ device on the cage whenever the motor is energized. I will state, however, that a solenoid may be employed in lieu of a magnet for accomplishing the above.
  • Another feature of the invention resides in the novel means employed for automatically disconnecting ⁇ the armature-shaft from the controlling mechanism in the elevator-cage when the parts reach a certain position,which maybe designated as their limit of travel, notwithstanding the fact that the motor is still energized and running, and, linally, the other features of invention reside in the construction, arrangement, and combination of the several parts, all as will hereinafter be described, and afterward pointed out in the claims.
  • 1 indicates the elevator cage or car; 2, the hauling ropes or cables; 3, the sheave for the hauling ropes or cables, said D sheave being located at the top of the shaft in the upper part of the building and being mounted upon a shaft 1,1-, which shaft is journaled in suitable bearings, as is well understood.
  • General con/rolling mechanism-5 indicates the controller or lever, which is manipulated by the operator in the car for starting and stopping the car.
  • This lever is mounted upon a shaft 6, which it rocks, said shaft carrying operating mechanism for controlling the power mechanism of the elevator.
  • the eZe1fcztordo0rs.-7 indicates a door suspended, as usual, by rollers upon a track. There is usually one of these doors at each floor or landing of a building for controlling an opening to the elevator-shaft. These doors may be manually or mechanically operated.
  • Door-SwitchoperatingMeehan sun-S indicates what may be termed a switch-actuator, and this is here shown as a rod or shaft which is arranged in juxtaposition to the path of movement of all of the doors 7.
  • This rod is preferably located in the elevator-shaft and may be continuous from top to bottom of tho building; but in high buildings I prefer to make said rod in sections, employing a coupling between the contiguous ends thereof, such as shown in Fig. 7.
  • This coupling consists of a sleeve or collar 9, fixed to the lower end of the upper suspended section, said upper section being hungin an appropriate manner, so that it is permitted to partially rotate.
  • This sleeve receives into the lower portion of its bore the upper end of the next-adjacent section S of the rod, thereby centering said section S.
  • Section S may have a stepped bearing, but is permitted to partially rotate independentlyof the upper section of the red S.
  • the upper end of the section S" carries a sleeveorcollarl,xedthereto. lothsleeves or collars and 9 are provided with flanges IO, which flanges are formed with registering concentric slots ll. (See Fig. (i.) An eye or loop of a switch-operating rod I3 is received in these slots 1l.
  • the sections of rod 8 for the purpose of saving friction, and thus reducing the power necessary shown in Figs. 6, 7, and 8, is preferably mounted upon an insulation-base 15, secured to some suitable support in the elevator-shaft.
  • - Perforated lugs 16 are arranged upon the base for, supporting a sliding rod 17, said rod being attached, through the medium of anappropriateinsulation-joint, to the rod 13.
  • 1S indicates a spring on rod 17, bearing at one end against one of the perforated lugs16 and at its other end against a cross-head 19, fixedv to the rod 17.V
  • This cross-head 19, as shown in Fig. 8, carries spring-pressed plungers 20, which are pressed outwardly and into contact with what might rbe termed blind terminals 21 when the switch is in its normal'and inoperative positions, as shown iu Fig. 7.,
  • Direct-current meten- The electric circuit referred to we will assume for the purpose of this present description isderived from a direct-current generator and energizesa motorpreferably mounted under the 'loorof the;
  • elevator-car which motor cooperates with the controlling devices to prevent the cage or car from moving away from a floor at whichit-is arrested for any considerable distance.
  • This motor being in the circuit controlled by the door-switch will only be available when the door-switch completes the circuit, and this is dependent upon the opening of any of the elevator-doors in the building. When all of the doors are closed, the circuit is broken and the motor is idle.
  • the motor shown in Figs. 1 to 5, inclusive consists of the usual field-magnets, armature, com mutator, brushes, &c., said armature being mounted upon a shaft which is extended outwardly a considerable distance,being j ournaled in a suitable bracket 24, depending from the iioor of the cage or car. (See Fig. 5.)
  • segmentalV gear may yield in either direction to a slight extent, the opposing plungers tending to center the same at all times with respect to the fixed arm 29.
  • This fixed arm 29 ⁇ carries a projection 30 inthe-path of movement of the segmental gear, so that after said segmental gear is moved Va short distance independently of the 'shaft' it becomesYen# gaged with said shaft through theinstrumen-y tality of said projection 30 on said fixed arm, and a-continued movement of the segmental gear will positively drive the shaft 6 in the same direction.
  • Theshaft'- is mounted in suitable bearings 31l and 32, suspendedfrom the iioor of the car, the bearing 32'supporting magnets 33.
  • a spring-pressed vplunger 37 cooperates with the armature for the purpose of holding the same in an elevated position above themagnets.
  • a hook 38 is vmounted upon the armature 36 for engaging a pin or projection 39 on the depressible frame y26.' 40am cam-blocks adjustably mounted on the' segmental gear 27, whose-working faces cooperate with the hook 38 for disen'gaging the same from the frame 26 when the shaft 6 ⁇ is.
  • This journal-bracket 32 is also IIO being driven through the segmental gear.
  • the frame 2G is normally heldin an elevated position by a spring 4l.
  • the segmental gear has a slight yielding movement independently of said shaft G, which causes the segmental gear when driven to be circumferentially displaced with respect to the lixed arm 29, said segmental gear traveling in advance of said fixed arm, such advanced or abnormal position of the segmental gear being equivalent to the distance of its independent idle movement before it becomes engaged with the fixed arm.
  • the segmental gear 27 will rst be circumferentially displaced and will cause one of the plungers 2S to yield until the segmental gear becomes positively engaged with the fixed arm by striking the projection 30 thereof. Under these conditions the continued rotation of the motor will cause the shaft G to be rocked and its carried lever 5 to be moved, so that the controllingvalves will be thrown in one direction or the other to tend to restore the elevator toits landing. lf bythe above the shaftt is thrown to such an extent as to operate its connected controlling device so as to cause the cage to be arrested in its movement and said movement reversed, it follows that the cage inthe absence of the operator will simply move up and down slowly Yfor a short distance. However, as it is usually the practice to have an attendant upon the car at all times the attendant.
  • An appropriate spring 3S is arranged behind the hook 38, so that notwithstz-tnding the fact that the magnets 53 are energized and hold the hook in a lowered position said hook will be in readiness when the armature is permitted to rise to again engage the frame 2b.
  • the magnets are also placed in circuit.
  • Arm 42 carries an insulation-block 44 on its upper end, upon which are two bindingposts 45 and 46,' said binding-posts carrying electric contacts which project on each side thereof and cooperate with stationary contacts 47, 48, 49, and 50, mounted in pivoted arms 5l.
  • These arms 5l are pivoted to the binding-posts in the form of blocks 52, properly insulated from a support 58, said arms being pressed inwardly by springs 55 and arrested in their innermost position by lugs 56.
  • the sheave 3 is fixed to the shaft 4, and consequently any movement of the elevator cage or carwill cause saidV shaft 4 to rotate' in one direction or the other, and this rotation in either direction will cause the electric contacts on the arm 42 to complete the circuit through the fixed terminals at either side thereof.
  • the idle play of the arm 42 in moving between these fixed terminals is comparatively short-say one-fourth of an inch-so that the slightest movement of the cage upward or downward will cause the circuit to be completed throughthe pole-changers, the circuit going through the armature in one direction or the other,depending upon the direction of movement of the elevator-cage.
  • the operator may, when the door is open, throw the lever 5 to the full limit of its movement in either direction; but the motor, through this lever-switch, will tend to restore the hand-lever.
  • Traveling contact-60 indicates a bar,wire, or strip of metal arranged in the elevatorshaft and forming a track for and cooperating with a moving contact, preferably in the form of a wheel G1, carried by the car.
  • This strip 60 is interrupted at points by dead sections 62, said dead sections properly supporting the wheel, but breaking the electric contact between the strip 60 and the wheel.
  • dead vsections in the strip are bridged by wires, so that the strip above and below the ⁇ dead sections is alive.
  • These dead sections in the strip 60 occur at such places as to be opposite the wheel or trolley Gl when the car is in proper position at a landing.
  • the pole-changer directs the current through the motor in such manner that when the arm 42 is in one position the current drives the motor in one direction, causing the reversing mechanism to operate the shaft 6 in such manner as to move the controlling devices and reverse the direction of travel of the car.
  • the reversing mechanism is designed to operate the controlling mechanism of the car in a contrary direction at all times, so that the movement of the car is reversed, the pole-changer simultaneously reversing the armature-circuit.
  • Fig. 4 I have shown the pole-changer in the position it occupies, say, when the car is arrested at a floor after moving in an upward direction.
  • the current entering through wire ct passes through the binding-post 45, wire d, magnets 33, and into the armature-windings via the lower com- 1n utator-brush.
  • the current passes from the armature through the upper commutatorbrush,through wire b and wire b to terminal 50, from terminal 50 through the binding-post 46 and wirefto strip GO, likewise through wire j" to the lever-switch.
  • the circuit would pass through wires g and g', the field-coil of the motor, wire 7L, and through the door-switch to the return-wire t'.
  • the motor always operates to drive the controlling mechanism ofthe carin a direction tending to reverse the same and cause the carto travel in a contrary direction;
  • the circuit is controlled by (a) the pole-changer, (Z1) the door-switch, (c) the lever-switch, and (d) the moving contact or trolley; fourth, that (a) the pole changer is never intended to be in an inoperative position, but should at all times contact with one or the other set of cooperating terminals; fifth, that (b) the door-switch absolutely controls the circuit, the opening of the door closing the circuit, rendering the electrical devices available for operation, while the closing of the door breaks the circuit, rendering all of the electrical devices inoperative; sixth, that (c) the lever-switch is only available when the door is open and serves to prevent the operator from starting the car away from a landing at full speed; seventh, (d) the traveling contactortrolley determines the distance ot movement of the car away from a landing when the door is open, either up
  • the operator in approaching a landing may bring his car to a position of rest, open the door7 and let passengers in or out, as usual, and may start the car slowly (not at full speed) away from the landing before the door is vlully closed, the car traveling to the end of the dead section, which when passed if the door is not closed will cause the controlling mechanism set in motion by the operator to be reversed, the reversal resulting in checking the car and causing the carto travel toward the landing it has left. This reversal is beyond the control of the operator, compelling him to first close the door, to break the circuit, and render the electrical devices inoperative before he can proceed.
  • Inland-'rope controlli/)2g device-In Fig. 18 l have shown my invention for use in connection with a man ually-operated hand-rope,said rope being used for controlling the power which operates the elevator in lieu of the operating-lever before referred to(
  • the door-operating lever 5 is designed to be operated in substantially the same way as hereinbet'ore described; but the other parts of the mechanism may be located at the top or at the bottom ot' the shaft, as desired, instead of being arranged on the car, as previously described.
  • the hand-rope or tiller-rope, as-it is usually called, is indicated at 65, said rope passing over sheaves or sprockets 66, as is usual.
  • a pinion 67 is mounted upon one of the shafts of the sheaves 66, over .which pinion passes a chain or cable 68 for driving a sheave or sprocket G9, mounted upon the end of a rock-shaft tia, this rock-shaft corresponding in all respects to the shaft 6,- upon which the hand-lever (shown in Figs. l and 2) is arranged.
  • ConstantZy-runnng motora-In Fig. 19 I have shown a modified form of my invention, wherein the motor is designed to run constantly instead of being energized at different periods of time and under certain conditions, as hereinbefore described.
  • 70 indicates the motor, whose armature-shafts are provided with worms 23 and 23", each held away from the segmental gears 27a and 27b by mechanism snch as before described.
  • Magnets 33a and 331 effect the engagement of the worms with their respective segmental gears.
  • the segmental gears are connected together by a link 270, so that when either of said gears is driven the shaft 6" will be rocked.
  • 5b is the hand-lever on the car for rocking the shaft 6b and actuating thecontrolling devices for moving the car.
  • 421 is a switch mounted upon the shaft lib for sending the current in one direction or the other, depending upon the direction ofmovement of the elevator.
  • This switch-arm 42h corresponds in all respects to the switch-arm 42, before described, with the exception that it carries a single contact-point for coperating with opposite terminals instead of a pair of terminals on each side.
  • lever-switch, the door-switch, and the trolley devices are the same as before described.
  • the operation of this switch is as follows:
  • the cu rrent either alternating or direct, causes the motor to constantly rotate, and when the switch 421 is in contact, say, with the terminal at the left the circuitis completed through the inlead-wre a/,wire lv', magnet 33,wire c, strip 60, andif the trolley is on one of the live sections ofsaid strip, through the trolley to the door-switch via wire d and out through the return-wire c'.
  • magnet 33, and wire c", strip 60 through the trolley, and to the door-switch and out through the return-wire, causing the magnet 33b to be energized, if the trolley is on a live section, so as to engage the worm 23b with the segmental gear 27b and rock the shaft 6b in a reverse direction to reverse the movement of the car, or if the trolley is on a dead section and the operating-handle 5b is manipulated to its extreme limit the cireuitwill be completed and the same result accomplished.
  • This constantly-running motor is preferably mounted under the bottom of the car, although it is obvious that it could, as indicated in Fig. 18, cooperate with a hand-rope and be arranged in thetop or bottom of the shaft.
  • thev principal purpose of the motor is to drive an A train of connection between the manually-operable device on the car and the valve, switch, or other form of controlling device which regulates and controls the power which causes vthe elevator to ascend or descend, which elements are capable of being operated bythe IOO IIO
  • the motor employedf may be a constantly-run ⁇ l ning motor and the devices coperating therewith may be set in motion by theA establishment of certain conditions to cause the engagement between the motor and the controlling devices,for lthe motor may be normally idle and in constant engagement with the controlling mechanism, and that devices may be employed for energizing the motor Y under certain conditions.
  • a car controlling mechanism therefor, a man ually-operable device for actuating said controlling mechanism, a motor independent of the car-moving mechanism, and means for engaging the motor with the controlling mechanism when the car moves away from a landing and the door is open; substantially as described.
  • a controller for said power mechanism of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, means for energizing said motor, gearing between said motor and said controller,"and means for connecting and disconnecting said gearing; substantially as described.
  • said means including a controller-shaft, a gear thereon, a motor, a shaft driven thereby, a gear upon said motor-driven shaft adapt-ed to operatively engage said gear upon said controller-shaft, means for yieldingly supporting said gears out of operative engagement, and means for throwing said gears into operative engagement; substantially as described.
  • 35 The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the carto rest, said means including a controller-shaft, a gear thereon, an extended power-driven shaft, a gear on said power-driven shaft adapted to operatively engage said gear upon said controller-shaft, and a suitablysupported movable frame in which the free end of said power-driven shaft is journaled; substantially as described.
  • controller effect said disconnection; substantially as described.
  • said controller means for operatively connecting said gears, and means adj ustably supported by said controller-gear for causing'said gears to be thrown out of connection by the movement of said controller-gear; substantially asdescribed.
  • 5S The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to said controller, means for yieldingly holding said gears out of connection with each other, a member adapted to engage a part connected to one of said gears and bring said gear into connection with said other gear against the action of said yielding means, and a cam carried by said controller-gear and, in the continued movement of said gear, adapted to engage said member and throw the same out of position to effect said connection of said gears; substantially as described.
  • Gi The combination with an elevator-car, a power mechanism for use therewith, a single switch controlling said power mechanism, and a plurality of doors, of means for operating said switch by each of said several doors; substantially as described.
  • a power mechanism controlling the same, a plurality of independently-operable switch-actuator sections, means for operating said several sections, and asingle means common to said several sections for operating said switch by the movement of any of said several sections; substantially as described.
  • a power mechanism In an elevator mechanism or the like, a power mechanism, a single switch controlling the same, a plurality of'independentlyoperable switch-actuator sections, means for operating said several sections, and a single means common to said several sections for operating said switch by the movement of any ofsaid several sections; substantially as described.
  • a power mechanism a switch-actuator, a suitably-supported'perforated lug, a sliding rod extending through said lug, a switch member upon said rod, a spring between said switch member and said lug, a connection between said rod and said actuator, and means-for moving said actuator against the action of said spring; substantially as described.
  • a power mechanism a switch controlling the same and including a movable cross -head carrying contact members, a rod upon which said cross-head is carried, a suitably-supported perforated lug through which said rod is slidable, a spring between said cross-head and said lng, a movable switch-actuator, and connection between said rod and said switchactuator; substantially as described.
  • a rotatable shaft means for rotating said shaft in reverse directions, operative mechanism, a motor therefor, an arm yieldingly engaged with said shaft to have its position changed by reversal of movement of said shaft, means for arresting the movement of said arm, and means carried by said arm for controlling the current to said motor; substantially as described.
  • a rotatable shaft In an elevator mechanism or the like, a rotatable shaft, means for rotating said shaft in reverse directions, operative mechanism, a motor therefor, an arm carrying means for controlling the current to said motor, means for arresting the movement of said arm, and a spring holding said arm in yielding engagcment with said shaft whereby the position of said arm is changed by reversal of movement of said shaft; substantially as described.
  • an electric circuit including said mechanism, a switch in said circuit, connections between said door and said switch whereby the vlatter is operable by the former, and a second switch in said circuit, said second switch being operated by a movement incident to travel of said car; substantially as described.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Door Apparatuses (AREA)

Description

No. 698,827. Pawntd Apr. 29, |902.
F.` K. FA SS ETT. CONTROLLER Fon E-LEVAToRs. (Application led Sept. 9, 1,901.)
(No Model.) 5 Sheets-Sheet I.
TN: Nanms Farms co, mom-mvo.. wAsmNa'roN. D. c.
No. 698,827. Patented Apr. 2 9, |902.
F. K. FAssETT.
CONTRULLER FOR ELEVATORS.
(Application led Sept. 9, 1901.)
5 Shee'rs-Sheet 2,
No. 698,827: Patented Apr. 29, |902.
F. K. FASSETT.
CONTROLLER FOB vELEVATORS.
(Application filed Sept. 9, 1901.)
5 Sheets-Sheet 3.
(No Model.)
Zv fa/ N0. 698,827. Patented Apr. 29,l |902.
F. K. FASSETT.
CGNTRLLER FOR ELEVATORS.
(Application led Sept. 9, 1901.)
5 Sheets-Sheet 4.
L m 9.,. 2 ru p A d Dv t n 6 t a P .S on 0 T A .V UE L EE S Sm MF .n KL .L ,F0 Dn T N nu C (Application led Sept. 9, 1901.)
5 Sheets-Sheet 5.
(No Model.)
we kww UNITED4v STATES;
PATENT' Ormes'.
FRANCIS FASSETT, OF ST. LOUIS, MISSOURI, ASSIGNOR TO LEO EHRLIOII,
` OF ST. LOUIS, MISSOURI.
CONTROLLER FOR ELEVAT'ORS.
SPECIFICATION forming part of'Letters Patent N0. 698,827, dated April 29, 1902. Application tiled September 9, 1901. Serial No. 74,813. (No model.)
To cz/ZZ whom t may' concern:
Be it known that I, FRANCIS K. FAssETr, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Controllers for Elevators, of which'the'following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a sectional view through an elevator-shaft, showing the cage in side elevation and my improved mechanism in position thereon. Fig. 2 is a similar view showing the cage in front elevation and my improved mechanism thereon. Fig. 3 is a diagrammatic view of the system of wiring. Fig. 4 is a similar view. Fig. 5 shows a bottom plan view of the cage with myimproved mechanism in position thereon, showing the system of wiring. Fig. 6 is a horizontal sectional view showing details of the door-operated switch. Fig. 7 is a side elevational View of the door-operated switch. Fig. 8 is a sec- -tional view on line 8 8, Fig. 7. Fig. 9 is a side elevational view ofthe pole-changing switch arranged on the shaft of the sheave over which the hauling-ropes pass at the upper portion of the building. Fig. l0 is a sectional view on line 10 10, Fig. 9. Fig. 1l is a top planview of the pole-changing switch. Fig. 12 is an end elevational view of the switch arranged upon the shaft upon which the operating lever or handle is mounted. Fig. 13 is a side elevational view of the same. Fig. let is a side elevational view of the mechanism mounted upon the shaft of the operating-lever reversing the rocking-shaft. Fig. 15 is an end elevational view of one of the elements of said mechanism. Fig. 16 is an end elevational view of said mechanism. Fig.
17 is a top plan view of said mechanism.v
Fig. 18 is a diagrammatic view of a modied form of my invention, and Fig. 19 is a dia-I grammatic view of another modified form of my invention.
This inventiony relates to a controller for elevators, being designed particularly,though not exclusively, for use in connection with passenger-elevators.
The object of. this invention is to prevent the cage from moving any considerable distance from the floor at which it is arrested while the door is open, although the operator is permitted to manipulate the lever, wheel, or handle, as the case may be, to startthe elevator at less than full speed; but in no instance is it possible for the operator to throw and hold the controller to either ex- 6o treme position in leaving the door unless the door is closed.
IIeretofore devices have been made for locking the controlling lever, wheel, or handle against movement when the elevator was at a floor, said devices being actuated by the door and being effective when the door Was opened. When the door was closed, the lever, wheel, or handle was released and could then be manipulated. It is obvious that by 7o the use of such constructions considerable time is lost, because the closing of the door is a condition precedent to the manipulation of the said controlling devices.
My present invention contemplates a movement of the controlling devices, which will enable the cage to travel a short distance above or below the floor, notwithstanding the fact that the door may be open; but when the cage reaches a predetermined limit the con- 8o trolling devices are. automatically reversed if the door is still open'and the cage returned toward the level of the floor which it had attempted to leave.
InV elevators where the doors are controlled 8 5 by the operator and no' means are provided for locking the controlling device on the elevator-cage or for cooperating with said controllingdevice, so as to prevent the departure of the elevator from a door, accidents 9o frequently occur. Passengers attempt to enter or leave the car when the door is open or while the door is being either opened or closed and after the operator has movedthe controlling device to start the cage away sequently injuries of a serious nature are apt to be inflicted.
C011- Ioo My present invention is designed to be applied to existing forms of controlling devices; and it consists, generally stated, in means coacting with said controlling device to reverse the movement thereof in the event that the operator attempts to leave a floor while the door is still open. A limited uninterrupted travel of the cage is permitted-say from twelve to eighteen inches above or below the floor; but this travel is insufficient to cause the elevator to inflict any injury to a person attempting to get into or out of the cage. When the door is closed, the mechanism which eoacts with the controlling device is inoperative, and therefore said controlling device may be operated as usual.
In addition to the above the invention consists in providing a motor which is only energized and effective when the door is open for cooperating with the controlling lever, wheel, or hand-rope in such manner that any movement thereof tending to cause the cage to travel beyond the prescribed limits will be reversed by the motor and the cage restored to the iioor it attempted to leave. This motor is ineffective while the cage is within the prescribed limits of travel above and below the floor; but theinstant the cage passes beyond said limits the motor is effectively engaged with the controlling mechanism of the car to reverse the same, and consequently changes the direction of travel of the cage, tending` to restore said cage to the floor which it had attempted to leave.
Another feature of the invention is the provision of a pole-changing switch, where direct currents are employed, for changing the direction of rotation of the armature-shaft of the motor at every change of direction of travel of the cage.
Another feature of the invention resides in the provision of a magnet in the motor-circuit for effectively engaging the motor with the controlling` device on the cage whenever the motor is energized. I will state, however, that a solenoid may be employed in lieu of a magnet for accomplishing the above.
Another feature of the invention resides in the novel means employed for automatically disconnecting` the armature-shaft from the controlling mechanism in the elevator-cage when the parts reach a certain position,which maybe designated as their limit of travel, notwithstanding the fact that the motor is still energized and running, and, linally, the other features of invention reside in the construction, arrangement, and combination of the several parts, all as will hereinafter be described, and afterward pointed out in the claims.
The cage and 'its operating mechanism. In the drawings, 1 indicates the elevator cage or car; 2, the hauling ropes or cables; 3, the sheave for the hauling ropes or cables, said D sheave being located at the top of the shaft in the upper part of the building and being mounted upon a shaft 1,1-, which shaft is journaled in suitable bearings, as is well understood.
General con/rolling mechanism-5 indicates the controller or lever, which is manipulated by the operator in the car for starting and stopping the car. This lever is mounted upon a shaft 6, which it rocks, said shaft carrying operating mechanism for controlling the power mechanism of the elevator.
I have not deemed it necessary in this application to illustrate any of the operating mechanism except as above mentioned, nor the controlling devices therefor whereby the cage is caused to ascend, descend, or be ar rested at the will of the operator by the manipulation of the lever 5, as such form no part of this invention. I will say, however, that my present invention is applicable to elevators in general irrespective of their power mechanism; also, that while I have shown a rocking lever 5 it is obvious that there are other forms of devices manipulated by the operator for managing the controlling mechanism which could be used in conjunction with my invention.
The eZe1fcztordo0rs.-7 indicates a door suspended, as usual, by rollers upon a track. There is usually one of these doors at each floor or landing of a building for controlling an opening to the elevator-shaft. These doors may be manually or mechanically operated.
Door-SwitchoperatingMeehan sun-S indicates what may be termed a switch-actuator, and this is here shown as a rod or shaft which is arranged in juxtaposition to the path of movement of all of the doors 7. This rod is preferably located in the elevator-shaft and may be continuous from top to bottom of tho building; but in high buildings I prefer to make said rod in sections, employing a coupling between the contiguous ends thereof, such as shown in Fig. 7. This coupling consists of a sleeve or collar 9, fixed to the lower end of the upper suspended section, said upper section being hungin an appropriate manner, so that it is permitted to partially rotate. This sleeve receives into the lower portion of its bore the upper end of the next-adjacent section S of the rod, thereby centering said section S. Section S may have a stepped bearing, but is permitted to partially rotate independentlyof the upper section of the red S. The upper end of the section S" carries a sleeveorcollarl,xedthereto. lothsleeves or collars and 9 are provided with flanges IO, which flanges are formed with registering concentric slots ll. (See Fig. (i.) An eye or loop of a switch-operating rod I3 is received in these slots 1l. For the purpose of this description we will assume that there are but two sections of the rod S in the buildingl and that when the upper of said sections is rocked its attached flanged collar will be moved to the right (see Fig. G) and the switch-operating rod 13 will be moved to the right, the loop 12 riding idly through the slot ll ofthe collarflange of the stationaryscction. In this man- IOO IIO
ner if there were six floors in a building the u pper section of the rod would be common to the three upper iieors, while the lower section of the rod-would be common to the three lower floors, and when any door in the three upper Heers is operated the upper section of the rod will be manipulated in a manner new about to be described, and when any door in the three lower sections is manipulated the lower section of the rod will be operated. In the path of movement of all of the elevator-doors in the building are projections 14C, (see Fig. 6,) which projections are secured to the sections of the rod 8, so that when any elevatordoor of the building is open or partially open the projections 14 will be displaced and the sectionof rod 3, to which said projection is conn ected,rocked. As before stated, the sections of rod 8 for the purpose of saving friction, and thus reducing the power necessary shown in Figs. 6, 7, and 8, is preferably mounted upon an insulation-base 15, secured to some suitable support in the elevator-shaft.- Perforated lugs 16 are arranged upon the base for, supporting a sliding rod 17, said rod being attached, through the medium of anappropriateinsulation-joint, to the rod 13. 1S indicates a spring on rod 17, bearing at one end against one of the perforated lugs16 and at its other end against a cross-head 19, fixedv to the rod 17.V This cross-head 19, as shown in Fig. 8, carries spring-pressed plungers 20, which are pressed outwardly and into contact with what might rbe termed blind terminals 21 when the switch is in its normal'and inoperative positions, as shown iu Fig. 7.,
However, when any door is open and either section of rod 8 rocked the red 13 and its connectedrod 1-7 are moved, and the spring-- pressed contacts20 engage electric terminals 22 in their paths, the spring-pressed contacts completing an electric circuit through said' terminals. Thus wheneveranyelevator-door is open the'circuit referred to is closed or completed, andwhen all of the doors areclosed the spring 1S restores the sections of rod 8 to normal position and also moves thecrosshead 19 to the left, breaking the electric circuit.
Direct-current meten- The electric circuit referred to we will assume for the purpose of this present description isderived from a direct-current generator and energizesa motorpreferably mounted under the 'loorof the;
elevator-car, which motor cooperates with the controlling devices to prevent the cage or car from moving away from a floor at whichit-is arrested for any considerable distance. This motor being in the circuit controlled by the door-switch will only be available when the door-switch completes the circuit, and this is dependent upon the opening of any of the elevator-doors in the building. When all of the doors are closed, the circuit is broken and the motor is idle. v
The motor shown in Figs. 1 to 5, inclusive, consists of the usual field-magnets, armature, com mutator, brushes, &c., said armature being mounted upon a shaft which is extended outwardly a considerable distance,being j ournaled in a suitable bracket 24, depending from the iioor of the cage or car. (See Fig. 5.)
Hund Zever reversing mecwmtsm--This armature-shaft is provided with a worm 25, (see Figs. -14 to 17,inclusive,) said shaft at this point being mounted in a frame 26, pivotally supported at one end in a bracket (not shown) depending from the Iioor of the car. The free end of this pivot'ed frame carries the shaft V23, and when saidframe is depressed, as shown by dotted lines in Fig. 14, shaft23 is deflected, so that the worm 25 is thrown into mesh with asegmental gear 27,' mounted uponlthe rock-shaft 6. If desired, universal couplings may be used in the length of shaft 23; but in view of the fact that the deliection of said shaft from a straightlline is so slight it is possible for the frame 26 to bedepressed to cause engagement between the-wormV 25 and the segmental gear without binding or interfering with the rotation-of .said armature-shaft. The segmental gear27 referred to is loosely mounted'on shaft 6 and carries two spring-pressed plungers 28, which coperate with an arm 29, fixed upon the shaft 6.
Thus the segmentalV gear may yield in either direction to a slight extent, the opposing plungers tending to center the same at all times with respect to the fixed arm 29. This fixed arm 29`carries a projection 30 inthe-path of movement of the segmental gear, so that after said segmental gear is moved Va short distance independently of the 'shaft' it becomesYen# gaged with said shaft through theinstrumen-y tality of said projection 30 on said fixed arm, and a-continued movement of the segmental gear will positively drive the shaft 6 in the same direction. Theshaft'- is mounted in suitable bearings 31l and 32, suspendedfrom the iioor of the car, the bearing 32'supporting magnets 33. provided with an arm 34, upon which are-piv` oted links 35, said links carrying an armature 36, which is designed to be attracted by the magnets 33. A spring-pressed vplunger 37cooperates with the armature for the purpose of holding the same in an elevated position above themagnets. A hook 38 is vmounted upon the armature 36 for engaging a pin or projection 39 on the depressible frame y26.' 40am cam-blocks adjustably mounted on the' segmental gear 27, whose-working faces cooperate with the hook 38 for disen'gaging the same from the frame 26 when the shaft 6` is.
This journal-bracket 32 is also IIO being driven through the segmental gear. The frame 2G is normally heldin an elevated position by a spring 4l. By reason of the construction above described the segmental gear has a slight yielding movement independently of said shaft G, which causes the segmental gear when driven to be circumferentially displaced with respect to the lixed arm 29, said segmental gear traveling in advance of said fixed arm, such advanced or abnormal position of the segmental gear being equivalent to the distance of its independent idle movement before it becomes engaged with the fixed arm. This condition prevails when the segmental gear is driven in either direction, and the purpose of this is to advance the rearmost cam-block, so that said cam-block will when the shaft G is operated through the segmental gear release the frame 2G before reaching the limit of its movement; but in a normal position of the segmental gear when it is central with respect to the fixed arm neither of the cam-blocks referred to will cooperate with the releasing-hook of the frame 2G before the shaft reaches its limit of movement iu either direction.
The importance of the circumferential displacement of the segmental gear when the shaft 6 is being actuated therethrough will be developed later on.
Operation of the reversi/ig mechanism.- The operation of the above-described reversing mechanism is as follows: For the purpose of explanation we will say that the controlling-lever 5, mounted upon shaft 6, when in a vertical or central position causes the car, through the instrumentality of the controlling mechanism actuated thereby, to come to a position of rest, that when said lever and its shaft G are rocked, say, to the right the car is caused to ascend, and that when the lever and said shaft t3 are rocked, say, to the left the car is caused to descend. 'lhrough the fixed arm 2Q on shaft 6 the segmental gear 27 is moved to the right Aor to the left or occupies a vertical position, as the case may be, similar in all respects to the hand-lever 5, and in this rocking movement of the segmental gear neither cam-block will engage the hook 38, because Jthe limit of movement will be reached before the cam-blocks or either of them can cooperate with the hook so as to disengage it from the frame 2G. \Vheu the car is brought to a position of rest at a landing and the hand-lever 5 and the segmental gear are in a vertical position, the opening of the elevator-door at the landing will complete the electric circuit so far as the doorswitch is concerned. However, said circuit will not be available to the motor, nor will it energize the magnets until certain conditions, not yet mentioned, are established. We will assume for the purpose of explaining the operation of the mechanism shown in Figs. la to 17, inclusive, that the magnets are energized and that the motor is running. The energized magnets 33 will attract the armature 3G, causing it move to the position shown in dotted linesin Fig. 14, and through the hook 3S the frame 2G will be displaced, so as throw the rotating worm on the armature-shaft of the motor into mesh with the segmental gear 27. The segmental gear 27 will rst be circumferentially displaced and will cause one of the plungers 2S to yield until the segmental gear becomes positively engaged with the fixed arm by striking the projection 30 thereof. Under these conditions the continued rotation of the motor will cause the shaft G to be rocked and its carried lever 5 to be moved, so that the controllingvalves will be thrown in one direction or the other to tend to restore the elevator toits landing. lf bythe above the shaftt is thrown to such an extent as to operate its connected controlling device so as to cause the cage to be arrested in its movement and said movement reversed, it follows that the cage inthe absence of the operator will simply move up and down slowly Yfor a short distance. However, as it is usually the practice to have an attendant upon the car at all times the attendant. in the event of the operation of the reversing mechanism just described can manipulate the operating mechanism or lever 5 to properly control the car only after the reversing mechanism has completed its movement and the motor disengaged from the shaft ti. l have before stated that the segmental gear is circumferentially displaced with respect to the fixed arm 29, so that the rearmost cam-block is advanced. Consequently in this abnormal position the rearmost cam-block will before the segmental gear reaches the limit of its movement engage the hook 3S and release the frame 2U, so that the motor is disengaged from the shaft (5. As soon as this release is effected the segmental gear again centers itself with respect to the arm 2f), and in the ordinary operation of shaft neither cam-block will hit the hook 3S to disengage it from the frame 26. An appropriate spring 3S is arranged behind the hook 38, so that notwithstz-tnding the fact that the magnets 53 are energized and hold the hook in a lowered position said hook will be in readiness when the armature is permitted to rise to again engage the frame 2b.
We have presupposed in the above statement that the elevator, while brought to a propel-position of restopposite its landing, is, through leakage of its valves or from other causes not attributable directly to any movement of the lever 5 by the operator, moving away from the landing either up or down, as the case may be7 and that this travel up or down has established a condition wherein the motor is energized and caused to rotate, and
the magnets are also placed in circuit. The
The limit of this travel IOO IlO
of the car when the elevator-door is open, away from its landing, may be fixed arbitrarily. I have found that from twelve to eighteen inches is preferable.
Plech0mger.-As we are now dealing with a direct-current circuit and as We have mentioned an opposite movement beingimparted to the shaft (i from the motor, it will be necin either direction it will carry the arm 42 with it, by reason of the friction resulting from the pressure of spring 43, until the arm 42 is arrested. The shaft 4 will then continue to rotate; but the arm 42 will be held stationary.
Arm 42 carries an insulation-block 44 on its upper end, upon which are two bindingposts 45 and 46,' said binding-posts carrying electric contacts which project on each side thereof and cooperate with stationary contacts 47, 48, 49, and 50, mounted in pivoted arms 5l. These arms 5l are pivoted to the binding-posts in the form of blocks 52, properly insulated from a support 58, said arms being pressed inwardly by springs 55 and arrested in their innermost position by lugs 56.
The sheave 3 is fixed to the shaft 4, and consequently any movement of the elevator cage or carwill cause saidV shaft 4 to rotate' in one direction or the other, and this rotation in either direction will cause the electric contacts on the arm 42 to complete the circuit through the fixed terminals at either side thereof. The idle play of the arm 42 in moving between these fixed terminals is comparatively short-say one-fourth of an inch-so that the slightest movement of the cage upward or downward will cause the circuit to be completed throughthe pole-changers, the circuit going through the armature in one direction or the other,depending upon the direction of movement of the elevator-cage. With this slight movement of the arm 42 it is im probable that said arm will for any length ot` time occupya position between the fixed terminals, so that the motor-circuit is broken. When the cage is ascending,the circuit,as controlled by this pole-changing device, is such that if the motor-shaft is operated under these conditions and imparts motion to the shaft 6 such motion will be in such a direction as to cause said shaft o to rotate to the left, so that the controlling mechanism will be operated to arrest the upward movement of the cage. Likewise if the cage were descending the motor-circuit as controlled by the pole-changer would be such that if the motor were energized and engaged with shaft 6 it would move said shaft to the right, operating the elevator-controlling mechanism so as to cause the cage to ascend.
Lener-switch. Referring to Figs. l, 12, and 13, it will be observed that the shaft 6 has fixed to it an arm 57, said arm carrying an insulated binding-post 58 at its upper end, which cooperates between two lyielding terminals 59. These terminals 59 are mounted in spring-pressed pivoted arms, similar in all respects to terminals 47, 48, 49, and 50. This contact 58 is designed to engage one or the other terminal 59 when the lever 5 is at either extreme position for the purpose of completing the circuit through the motor independently of the position of the traveling contact carried by the elevator-car. In other words, it' the car is at a landing and the traveling contact, to be hereinafter described, is inoperative the operator may, when the door is open, throw the lever 5 to the full limit of its movement in either direction; but the motor, through this lever-switch, will tend to restore the hand-lever.
Traveling contact-60 indicates a bar,wire, or strip of metal arranged in the elevatorshaft and forming a track for and cooperating with a moving contact, preferably in the form of a wheel G1, carried by the car. This strip 60 is interrupted at points by dead sections 62, said dead sections properly supporting the wheel, but breaking the electric contact between the strip 60 and the wheel. These dead vsections in the strip are bridged by wires, so that the strip above and below the` dead sections is alive. These dead sections in the strip 60 occur at such places as to be opposite the wheel or trolley Gl when the car is in proper position at a landing. However, when the car moves up or down from the landing yand the door is open electrical connection is established between the strip and trolley and the circuit completed through the motor and other devices hereinbefore referred to. Said track and traveling contact thus are, in effect, a switch in the electric circuit.
General operation- Referring now to Figs.y 3 and 4, we will assume that ais the'inlead- Wire from 'a source of direct-current supply and that wire t' isthe return-wire. Wire a is connected to the binding-post 45 on the end of the arm 42,'-and in Fig.3 we will assume that the elevator has descended from some point above to its proper position at a 4landing, in which event the trolley 61 is on a dead-section in strip 60. We will also assume that the door is open'and that the door- "switch lhas completed the circuit'through the terminals 22.
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magnets oo to the terminal 4S and through wire e to terminal 49 to binding-post 4U. From bindingpost 46 the current passes through wirej to strip 60 and through wire f to contact-point 58 of the levenswitch. lf the trolley 6l is on a dead section and the lever 5 occupies a central position, the circuit will thus be broken. XVe Will assume, however, that the operator throws the lever 5 over to the left of the limit ot movement and causes the contact 58 to strike the terminal 59 in its path. The circuit will now be completed by said terminal through wire g, through the fieldmagnet coil ot' the motor, wire 7L, the doorswitch, and wire L', said wire t' being the return-wire. \Ve will suppose now that instead of completing the circuit through the lever-switch the operator moves the leverswitch 5 to a limited extent without making contact between 5S and 59 and attempts to leave the landing without closing the door. The limited movement of the lever 5 will not complete the circuit through the lever-switch; but the traveling contact (5l, depending upon the length of the dead section in the strip GO, will pass from said dead section onto one of the live sections of said strip and complete the circuit through the strip 60, trolley (5l, wire g, field-coil, wire 7L, dye. Ot course if the door is closed the door-switch will open the circuit, so that none of the devices betore referred to will be electrically operated. As before described, the pole-changer directs the current through the motor in such manner that when the arm 42 is in one position the current drives the motor in one direction, causing the reversing mechanism to operate the shaft 6 in such manner as to move the controlling devices and reverse the direction of travel of the car. The reversing mechanism is designed to operate the controlling mechanism of the car in a contrary direction at all times, so that the movement of the car is reversed, the pole-changer simultaneously reversing the armature-circuit.
In Fig. 4 I have shown the pole-changer in the position it occupies, say, when the car is arrested at a floor after moving in an upward direction. Under these conditions the current entering through wire ct passes through the binding-post 45, wire d, magnets 33, and into the armature-windings via the lower com- 1n utator-brush. The current passes from the armature through the upper commutatorbrush,through wire b and wire b to terminal 50, from terminal 50 through the binding-post 46 and wirefto strip GO, likewise through wire j" to the lever-switch. Should the circuit be completed through the lever-switch or the trolley, it would pass through wires g and g', the field-coil of the motor, wire 7L, and through the door-switch to the return-wire t'.
From the above the following salient points should be noted: First, the movement of the car either up or down ellects,throu gh the polechauger, a reversal in the direction ot rotathe current passes to wire d up i i; cease? tion of the motor; second, the motor always operates to drive the controlling mechanism ofthe carin a direction tending to reverse the same and cause the carto travel in a contrary direction; third, that the circuit is controlled by (a) the pole-changer, (Z1) the door-switch, (c) the lever-switch, and (d) the moving contact or trolley; fourth, that (a) the pole changer is never intended to be in an inoperative position, but should at all times contact with one or the other set of cooperating terminals; fifth, that (b) the door-switch absolutely controls the circuit, the opening of the door closing the circuit, rendering the electrical devices available for operation, while the closing of the door breaks the circuit, rendering all of the electrical devices inoperative; sixth, that (c) the lever-switch is only available when the door is open and serves to prevent the operator from starting the car away from a landing at full speed; seventh, (d) the traveling contactortrolley determines the distance ot movement of the car away from a landing when the door is open, either up or down, and operates when a car passes the prescribed limit to check its movement whether or not the operating-lever 5 has been operated; eighth, that none of the devices above described interfere in any way with the normal running conditions of an elevator. The operator in approaching a landing may bring his car to a position of rest, open the door7 and let passengers in or out, as usual, and may start the car slowly (not at full speed) away from the landing before the door is vlully closed, the car traveling to the end of the dead section, which when passed if the door is not closed will cause the controlling mechanism set in motion by the operator to be reversed, the reversal resulting in checking the car and causing the carto travel toward the landing it has left. This reversal is beyond the control of the operator, compelling him to first close the door, to break the circuit, and render the electrical devices inoperative before he can proceed.
lt will also be noted that the above-de scribed construction in addition to not interfering with the usual conditions surrounding the running ot elevators in service is of such character that it can be applied to elevators at present in service. Consequently no special provision need be made in the manufacture and erection of elevators for this device.
Inland-'rope controlli/)2g device-In Fig. 18 l have shown my invention for use in connection with a man ually-operated hand-rope,said rope being used for controlling the power which operates the elevator in lieu of the operating-lever before referred to( In this construction the door-operating lever 5 is designed to be operated in substantially the same way as hereinbet'ore described; but the other parts of the mechanism may be located at the top or at the bottom ot' the shaft, as desired, instead of being arranged on the car, as previously described.
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- The hand-rope or tiller-rope, as-it is usually called, is indicated at 65, said rope passing over sheaves or sprockets 66, as is usual. In order to reduce the movement, a pinion 67 is mounted upon one of the shafts of the sheaves 66, over .which pinion passes a chain or cable 68 for driving a sheave or sprocket G9, mounted upon the end of a rock-shaft tia, this rock-shaft corresponding in all respects to the shaft 6,- upon which the hand-lever (shown in Figs. l and 2) is arranged.
With the above-mentioned alterations the device operates in the same way as described with reference to the diagrammatic views illustrated in Figs. 3 and 4, and therefore it is deemed unnecessary to repeat that description here. Ofcourse the trolley (5l is mounted on'the car, as previously described.
ConstantZy-runnng motora-In Fig. 19 I have shown a modified form of my invention, wherein the motor is designed to run constantly instead of being energized at different periods of time and under certain conditions, as hereinbefore described. In this modification of my invention 70 indicates the motor, whose armature-shafts are provided with worms 23 and 23", each held away from the segmental gears 27a and 27b by mechanism snch as before described. Magnets 33a and 331 effect the engagement of the worms with their respective segmental gears. The segmental gears are connected together by a link 270, so that when either of said gears is driven the shaft 6" will be rocked. 5b is the hand-lever on the car for rocking the shaft 6b and actuating thecontrolling devices for moving the car. 421 is a switch mounted upon the shaft lib for sending the current in one direction or the other, depending upon the direction ofmovement of the elevator. This switch-arm 42h corresponds in all respects to the switch-arm 42, before described, with the exception that it carries a single contact-point for coperating with opposite terminals instead of a pair of terminals on each side. The
lever-switch, the door-switch, and the trolley devices are the same as before described. The operation of this switch is as follows: The cu rrent, either alternating or direct, causes the motor to constantly rotate, and when the switch 421 is in contact, say, with the terminal at the left the circuitis completed through the inlead-wre a/,wire lv', magnet 33,wire c, strip 60, andif the trolley is on one of the live sections ofsaid strip, through the trolley to the door-switch via wire d and out through the return-wire c'. If the lever-switchis operated to its full limit of movement in either direction, (in the event that the trolley is on one of the dead sections,) the circuit will be completed through wire c" and either of the terminals 59, through wire d to the door-switch and out through the return-wire c When this circuit is completed, either by the trolley or by the lever-switch,l the magnet 33 is energized, the worm 23 is thrown into mesh circuit will be completed through wireb",
magnet 33, and wire c", strip 60, through the trolley, and to the door-switch and out through the return-wire, causing the magnet 33b to be energized, if the trolley is on a live section, so as to engage the worm 23b with the segmental gear 27b and rock the shaft 6b in a reverse direction to reverse the movement of the car, or if the trolley is on a dead section and the operating-handle 5b is manipulated to its extreme limit the cireuitwill be completed and the same result accomplished. These worms, while rotating in the same direction, are oppositely pitched, so as to move the shaft 6b in different directions, depending upon the movement of the carthe throw of the shaft 6 in all instances being such as to actuate the controlling devices to arrest the car by throwing said controlling devices in a reverse direction and cause the car to travel in a reverse direction. This constantly-running motor is preferably mounted under the bottom of the car, although it is obvious that it could, as indicated in Fig. 18, cooperate with a hand-rope and be arranged in thetop or bottom of the shaft.
From the above it will be noted that thev principal purpose of the motor is to drive an A train of connection between the manually-operable device on the car and the valve, switch, or other form of controlling device which regulates and controls the power which causes vthe elevator to ascend or descend, which elements are capable of being operated bythe IOO IIO
motor for automatically changing the position of said controlling devices; further, that the motor employedfmay be a constantly-run`l ning motor and the devices coperating therewith may be set in motion by theA establishment of certain conditions to cause the engagement between the motor and the controlling devices,for lthe motor may be normally idle and in constant engagement with the controlling mechanism, and that devices may be employed for energizing the motor Y under certain conditions.
I am aware that many minor changes in the construction, v arrangement, and combination of the several parts of my invention can be made and substituted for those herein shown and described without iu the least departing from the nature and principle of my invention.
Having now described my invention, what I claim, and desire to secure by Letters Patent, is-
l. In an apparatus of the character described, the combination with a plurality of doors, of an electric circuit controlled by each individual door, said circuit being closed upon the opening of a door, a motor in said circuit, and controlling devices for the elevator with which said motor coperates; substantially as described.
2. In an apparatus of the character indicated, the combination with an elevator-car, power lnechanism therefor having a controller, and a door, of an electric circuit controlled by said door, a motor in said circuit, and means whereby said motor controls said controller; substantially as described.
23. In an apparatus of the character described, the combination with controlling mechanism for the car, of a motor normally out ol' operative connection with said controlling mechanism, and devices for effectively engaging said motor with said controlling mechanism for reversing the same; substantially as described.
4. The combination with controlling mechanism of an elevator-car, of a motor for driving said mechanism to bring the c'ar to a condition of rest, and means for disengaging said motor from said mechanism when the car is brought to rest; substantially as described.
5. The combination with controlling devices of an elevator-car, of a mot-or, devices for causing said motor to revex sely drive said controlling` mechanism, and a switch in the motor-circuit which is operated by the elevator-door; substantially as described.
b'. The combination with controlling mechanism which is free and operable when the car is at a landing and the door open, of means for restoring said mechanism should the actuating devices be thrown to start the car away from the floor before the door is closed; substantially as described.
7. In an apparatus of the character described, a car, controlling mechanism therefor, a man ually-operable device for actuating said controlling mechanism, a motor independent of the car-moving mechanism, and means for engaging the motor with the controlling mechanism when the car moves away from a landing and the door is open; substantially as described.
8. The combination with a ca r and its controlling mechanism, of a door, an electric circuit controlled by said door, a motor designed to cooperate with said controlling mechanism and reverse the same when the car leaves a landing and the door is open, and means for engaging the motor with said controlling mechanism; substantially as described.
9. The combination with the controlling mechanism of an elevator-car, of a motor for eeaeev driving the same, a pole-changer in the motor-circuit, and means for throwingI said polechanger into pole-changing position whenever the car changes its direction of travel; substantially as described.
l0. The combination with the controlling mechanism of an elevator-car, of a motor for driving the same, a door-switch in the motorcircuit, and a switch vfor completing the circuit whenever the actuating devices ol' the controllingmechanism are moved to their full limit; substantially as described.
ll. The combination with an elevator-car, power mechanism therefor, and a door, of means forl permitting only a limited movement of said car away lfrom the landing while said door is open, substantially as described.
l2. The combination with an elevator-car, power mechanism therefor, and a door, of means for permitting only a relatively slow limited movement of said car away from the landing while said door is open; substantially as described.
I3. The combination with an elevator-car, power mechanism therefor, a controller Vfor said power mechanism, and a door, of means for permitting only a limited movement ol' said controller while said door is open; substantially as described.
14. The combination with an elevator-car, power mechanism therefor, and a door, ol' means for automaticallyarresting the movement of said car should it travel a limited distance while said door is open substantially as described.
l5. The combination with an elevator-car, power mechanism therefor, and a door, of means for automatically reversing the movement of said car should it travel a limited distance while the said door is open; substantially as described.
l0. The combination with an elevator-car, power mechanism therefor, and a door, of means whereby the car is placed under the control of the operator while it is at a landing adjacent said door and for a limited distance beyond said landing, and means Yfor automatically arresting the travel of said car should it travel beyond said limited distance while the door is open; substantially as described.
17. rl'he combination with an elevator-car, and power mechanism therefor,of a controller for said power mechanism, a door, and means for automatically operating said controller, said means being rendered inoperative while the door is closed but operative when the door is open; substantially as described.
1S. The combination with an elevator-car, and power mechanism therefor,of a controller for said power mechanism, a door, and means for automatically operating said controller, said means being` rendered inoperative while the door is closed and also inoperative to stop the travel of the car while the door is open and the car is within a limited distance of its landing7 but said means being rendered op- ICO IIO
power mechanism therefor, a controller for said power mechanism, and a door, of a motor, and means for causing said motor to automatically control said controller at desired intervals of travel of the car; substantially as described.
20. The combination with an elevator-car, power mechanism therefor, and a door, of a motor, and means for causing said motor to control said car while the door is open; substantially as described.l
2l. The combination with an elevator-car, power mechanism therefor, and a door, of a motor, and means for causing said motor to arrest the movement of said car should it travel beyond a limited distance while said door is open; substantially as described.
22. The combination with an elevator-car, power mechanism therefor, and a door, of a motor, and means for causing said motor to arrest the movement of said car should it travel for a limited distance while the door is open, but be inoperative with respect to said controlling action upon said car while the door .is closed and while the car is in said limited distance and the door is open; substantially as described.
23. The combination with an elevator-car, power mechanism therefor, and a door, of a motor, and means for causing said motor to control the speed of the car while the door is open and to arrest the travel of the car should it move beyond a limited distance while the door is open; substantially as described.
24. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, of a motor, and means for causingsaid motor to reverse the said controller should the car travel beyond a limited distance while the door is open; substantially as described. t
25. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, of a motor, and means for causing said motor to limit the effective setting of said controller while the door is open and to cause said motor to reverse said controller should the car travel beyond a limited distance while the door is open; substantially as described.
2G. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for automatically returning said controller to a po.- sition to produce only a limited speed should said controller be moved beyond said position; substantially as described.
27. Thecombination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, of a motor, and means for causing said motor to return said controller to a position to effect only alimited speed should said controller be moved beyond said position while the door is open; substantially as described.'
28. The combination with an elevator-car,- power mechanism therefor, a controller for said power mechanism, and a door, of means for'permitting full control of said controller by the operator while the door is closedv but only limited control of said controller by the operator while the door is open; substantially as described.
29. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor,- means for energizing said motor, and means for operatively connecting said motor with said controller to cause said controller to operate the power mechanism in a direction tending 4to bring the car to rest; substantially Vas described.
30. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, means for periodically energizing said motor, and means for operatively connecting said motor with said controller to cause said controller to operate the power mechanism in a direction tending to bring the car to rest; substantially as described.
3l. The combination with an elevator-car,
power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, means for energizing said motor, gearing between said motor and said controller,"and means for connecting and disconnecting said gearing; substantially as described.
82. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the carto rest, said means including a motor, a worm driven by said motor, a segmental gear operatively connected to said controller, and means for connecting and disconnecting said worm and gear with relation to each other; substantially as described.
33. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the carto rest, said means including a controller-shaft, a gear thereon, a motor, a shaft driven thereby, a gear upon said motordriven shaft adapted cooperatively engage said gear upon said controllershaft,means for normally supporting said gears out of operative engage- IOO IIO
anism in a direction tending to bring the car to rest, said means including a controller-shaft, a gear thereon, a motor, a shaft driven thereby, a gear upon said motor-driven shaft adapt-ed to operatively engage said gear upon said controller-shaft, means for yieldingly supporting said gears out of operative engagement, and means for throwing said gears into operative engagement; substantially as described.
35. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the carto rest, said means including a controller-shaft, a gear thereon, an extended power-driven shaft, a gear on said power-driven shaft adapted to operatively engage said gear upon said controller-shaft, and a suitablysupported movable frame in which the free end of said power-driven shaft is journaled; substantially as described.
3G. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending` to bring the carto rest, said means including a controller-shaft, a gear thereon, an extended powerdriven shaft, a gear on said powerdriven shaft adapted to operatively engage said gear upon said controller-shaft, a suitably-supported movable frame in which the free end of said power-driven shaftisjournaled, and a spring normally holding said frame in position to hold said gears out of operative engagement; substantially as described.
37. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power meeh anism in a direction tending to bring the car to rest, said means including a controllershaft, a gear thereon, a motor, an extended armature-shaft, agear on said arm atu re-shaft adapted to operatively engage said gear upon said controller-shaft,andasuitably-supportcd movable frame in which the free end of said armature-shatt is journaled; substantially as described.
38. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, means for automatically throwing said motor and said controller into operative engagement, and means for automatically throwing said motor and said controller out of operative engagement; substantially as described.
3S). The combination with an elevator-car, power mechanism therefor, and a controller 'for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, gears connected to said motor and said controller, means for automatically causing operative engagement of said gears, and means for automatically throwing said gears out of operative engagement; substantially as described.
Al-O. The combination with an elevator-ear, power mechanism therefor, a controller for said power mechanism, and a door, of a motor normally out ol' operative engagement with said controller, means for automatically throwing said motor and controller into operative engagement when the said door is open, and means for throwing said motoiI and controller out of operative engagement when the door is closed; substantially as described.
4l. The combination with an elevatoncar, power mechanism therefor, a controller for said power mechanism, and a door, of a normally deiinergized motor, means for operatively connecting said motor and said controller, and means for automatically energizing said motor when the door is open, substantially as described.
42. The combination with an elevator-ear, power mechanism therefor, a controller for said power mechanism, and a door, of a motor normally deenergized and out of operative engagement with said controller, and means for automatically energizing said motor and throwing the same into operative engagement with said controller when said door is open; substantially as described.
43. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, ofa motor normally out of operative connection with said controller, and means forautomatically throwing said motor into operative connection with said controller should the travel of the car exceed predetermined limits when the door is open; substantially as described.
t-t. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, ot means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, gears connected to said motor and said controller, means for operatively connecting said gears, and means whereby the continued movement of said gears when connected causes the connection between said gears to be broken substantially as described.
a5. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, gearing between said motor and said controller, means for holding said gears in operative co nnection, means for disconnecting said gears by their continued movement, and means whereby the gear in connection with said controller can at times be moved to an extent corresponding to the full movement of said controller without eli'ecting said disconnection but at other times will, by a movement not greater than said full movement of said IOO IIO
controller, effect said disconnection; substantially as described.
46. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, gearing between said motor and said controller, means for holding said gears in operative connection, said parts vbeing normally so related that movement of the gear in connection with said controller through a distance equal to the -full throw of said controller fails to effect said disconnection, andv means for altering the relation between said controller and its said gear whereby movement of said gear through a distance not greater than the full throw of said controller effects said disconnection; substantially as described.
47. The combination with an elevator-car, power mechanism therefor, and a controller, for said power mechanism, of a rcontrollershaft, a motor, a gearoperable by said motor,a gear loosely mounted on said controllershaft, means for holding said gears in operative connection, an arm upon said shaft adapted to be engaged by said gear when the latter is moved, and means upon said controller-gear for breaking said connection in the movement of said gear, saidgear having a limited amount of movement independent of said arm; substantially as described.
4S. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable thereby, a controller-shaft, a gear loosely mounted thereon and having side members, means for holding said gears in operative connection, means upon said controller-gear for breaking said connection during its movement, and anv arm upon said con troller-shaft and having a part extending between said side members of the gear, there being play between said side members and said part upon said armysnbstantially as described. l
49. The combination with au elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable thereby, a controller-shaft, a gear loosely supported upon said shaft-,means for holding said gears in operative connection, means upon said gear carried by said shaft for causing said connection to be broken, a stop upon said shaft adapted to be engaged by said gear supported upon said shaft, and meansffor yieldingly holding said gear out of engagement with said stop; substantially as` described.`
50. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable thereby, a controller-shaft, a gear loosely supported upon said shaft and havingy side legs, means for holding said gears in operative connection, means upon said gear supported by said shaft for causing said connection to be broken, a stop upon said shaft and extending between the legs of said gear, plungers-engaging opposite sides of said stop and extending respectively through openings in said gear-legs, and springs about said plungers and bearing between their inner ends and vsaid respective gear-legs, whereby said legs are yieldingly held out of engagement with said stop; substantially as described.
5l. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, means for operatively connecting said motor and said controller, and means for rendering said motor inoperative with relation to said controller when the latter has been moved a predetermined distance by the action of the former; substantially as described.
52. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, means for operatively connecting said motor and said controller, and means whereby the continued action of said motor serves to render the same inoperative with relation to said controllerwhen said controller has been moved a predetermined distance bythe action of said motor; substantially vas described. Y'
53. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said'motor, a gear connected to said controller, means for operatively connecting said gears, and means carried by'said controller-gear for causing said gears toV be thrown out of connection by the movement of said controller-gear; 'substantially as described. 'A
54. The combination with an elevator-car, power mechanism therefor, and la controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to said controller, means for operatively connecting said gears, and a cam carried by said controller-gear fory causing said gears to be thrown out of connectionk bythe movement of said controller-gear;l substantially asdescribed. f
55. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to IOO IIO
said controller, means for operatively connecting said gears, and means adj ustably supported by said controller-gear for causing'said gears to be thrown out of connection by the movement of said controller-gear; substantially asdescribed.
5G. The combination with an elevatorlcar, power mechanism therefor, and a controller for said'power mechanism, of a motor, a gear operable by saidmotor, a gear connectedy to said controller, means for yieldingly holding said gears out of connection with'each other, a'member adapted to engage apart'connected to one of said Lgears and bring'saidl gear into connection with said other gear against the action of said yielding means,`an'd means for throwing said member out of position to effect said connection; substantially as described.
57. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to said controller, means for yieldingly holding said gears out of connection with each other, a member adapted to engage a part connected to one of said gears and bring said gear into connection with said other gear against the action of said yielding means, and means for throwing said member out of position to effeet said connection by the continuedaction of said gears, substantially as described.
5S. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to said controller, means for yieldingly holding said gears out of connection with each other, a member adapted to engage a part connected to one of said gears and bring said gear into connection with said other gear against the action of said yielding means, and a cam carried by said controller-gear and, in the continued movement of said gear, adapted to engage said member and throw the same out of position to effect said connection of said gears; substantially as described.
59. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable by said motor, a gear connected to said controller, means for yieldingly holding said gears out of connection with each other, a hook adapted to engage a part connected to one of said gears and bring said gear into connection with said other gear, and means acting in synchronism with said gears for throwing said hook cnt of engagement with said gear; substantially as described.
GO. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable thereby, a gear connected to said controller, means for holding said gears out of connection with each other, a member having engagement with one of said gears, and means for moving said member for bringing said gears into connection with each other, substantially as described.
G1. The combination with an elevator-car, power mechanism therefor, and a controller for Said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, a gear operable thereby, a gear connected to said controller, means for holding said gears out of connection with each other, an armature having connection with one of said gears, and a magnet for moving said armature to connect said gears; substantially as described.
G2. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of means for causing said controller to operate the power mechanism in a direction tending to bring the car to rest, said means including a motor, a gear operable thereby, a gear connected to said controller, means for holding said gears out of connection with each other, an armature having connection with one of said gears, a magnet for moving said armature to connect said gears, and means for yieldingly holding said armature from said magnet; substantially as described G3. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a gear operable thereby, a gear connected to said controller, means for yieldingly holding said motor-gear out of connection with said controller-gear, a magnet, an armature, means for yieldingly holding said armature away from said magnet, a hook movably supported upon said armature and adapted to engage a part connected to said motor-gear, means for yieldingly holding said hook in said engaging position, and a block upon said controllergear adapted during the movement of said gear to move said hook out of its said engagement, substantially as described.
Gi. The combination with an elevator-car, a power mechanism for use therewith, a single switch controlling said power mechanism, and a plurality of doors, of means for operating said switch by each of said several doors; substantially as described.
65. The combination with an elevator-car, a power mechanism for use therewith, and a shaft, of connection between said shaft and said power mechanism for controlling the latter by the rocking of the former, and meansfor operating said shaft by the movement of said door; substantially as described.
GG. The combination with an elevator-car, a power mechanism for use therewith, and a shaft, of connection between said shaft and said power mechanism for controlling the latter by the rocking of the former, 'means for operating said shaft in one direction by the opening of said door, and means `for reversely rocking said shaft as said door is closed; substantially as described.
67. The combination with an elevator-car, a power mechanism for use therewith, and a shaft, of connection between said shaft and said power mechanism for controlling the latter by the rocking of the former, a projection upon said shaft in the path of movement of said door whereby said shaft is rocked by the opening movement of said door, and a spring for rocking said shaft in the opposite direction when said door is closed; substantially as described.
(5S. The combination with an elevator-car, a power mechanism for use therewith, a single switch controlling said power mechanism, a single movable member operatively connected to said switch, and a plurality of doors,
lOO
IIO
of means for operating said movable member f by each of said several doors; substantially as described.
69. In an elevator mechanism or the like, a power mechanism, a switch controlling the same, a plurality of independently-operable switch-actuator sections, means for operating said several sections, and asingle means common to said several sections for operating said switch by the movement of any of said several sections; substantially as described.
'70. In an elevator mechanism or the like, a power mechanism, a single switch controlling the same, a plurality of'independentlyoperable switch-actuator sections, means for operating said several sections, anda single means common to said several sections for operating said switch by the movement of any ofsaid several sections; substantially as described.
7l. In an elevator mechanism or the like, a power mechanism, a switch controlling the same, a plurality of independently-operable switch-actuator sections, and a common connector between said switch and said sections and engaged by parts upon each of said sections, said engaged portion of said connector being movable with relation to one of said sections when engaged and moved by another1 plays in said slot of another of said sections;
substantially as described.
73. In an elevator mechanism or the like, a power mechanism, a switch-actuator, a suitably-supported'perforated lug, a sliding rod extending through said lug, a switch member upon said rod, a spring between said switch member and said lug, a connection between said rod and said actuator, and means-for moving said actuator against the action of said spring; substantially as described.
74. In an elevator mechanism or the like, a power mechanism, a switch controlling the same and including a movable cross -head carrying contact members, a rod upon which said cross-head is carried, a suitably-supported perforated lug through which said rod is slidable, a spring between said cross-head and said lng, a movable switch-actuator, and connection between said rod and said switchactuator; substantially as described.
75. The combination with anelevator-car, power mechanism therefor, and-acontroller for saidpower mechanism, of aV motor for operating said controller, and a switch in the circuit of said motor and operable by said controller; substantially as described.
76. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a relatively tixed terminal in said circuit, a controller-shaft, an arm carried thereby, and a terminal carried by said arm and adapted to cooperate with said relatively fixed terminal; substantially as described.
-77. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, a suitably-supported spring-pressed pivoted arm and a terminal of said circuit movable by said controller and adapted to contact with said first-mentioned terminal; substantially as described.
78. The combination with an elevator-car, Vpower mechanism therefor, and a controller for said power mechanism, of a motor, a normally open motor-circuit, and means for completing said circuit by the movement of said controller in either direction; substantially as described. l
'79. The combination with an elevator-car, power mechanism therefor, and a controller for said power mechanism, of a motor, and a motor-circuit including switch members, one of which comprises two electrically-connected terminals `while said other switch member comprises a third terminal intermediate said other terminals, one of said switch members being connected to and movable by said controller; substantiallyas described.
80. v The combination with an elevator-car,
mechanism requiring reversal of'movement, a motor for said operative mechanism, and means whereby upon reversal of movement of said car said motor is caused to operate to effect reversalf'of movement of said mechanism; substantially as described.
8l. The combination with an elevator-car, and power mechanism therefor, of operative mechanism-requiring reversal of movement, a motorfor said operative mechanism, `and vmeans for reversing the movement of said motor upon reversal of movementofsaid car;
substantially asdescr-ibed.
82. The combination with an elevator-car, and power mechanism therefor, of operative mechanism requiring reversal of-movement, a motor for said operative mechanism, and means controlledv by the movement of said car for vautomatically changing the direction of current through said motor; substantially as described. 1
83. The combination with an elevator-car, and power mechanism therefor, of operative mechanism requiring reversal of movement, a motor for said operative mechanism, a rotatable shaft, connection between said shaft and said car whereby the direction of rotation of the former is determined by the direction carrying a terminal of said motor-circuit,
and power mechanism therefor, of operative IOO IIO
of movement of the latter, and means operated by said shaft for causing said motor to operate to effect reversal of said operative mechanism upon reversal of rotation of said shaft; substantially as described.
Set. The combination with an elevator-car, power mechanism therefor, a rotatable shaft, and cables connected to said car and engaging Said shaft, of a controller for said power mechanism, and means for causing reversal of said controller upon reversal of rotation of said shaft; substantially as described.
85. The combination with an elevator-car, power mechanism therefor, a rotatable shaft, and cables connected to said car and engaging said shaft, of a controller for said power mechanism, a motor for said controller, and means for causing said motor to operate to reverse said controller upon reversal of rotation of said shaft; substantiallyas described.
SG. The combination with an elevator-car, power mechanism therefor, a rotatable shaft, and cables connected to said car and engaging said shaft, of a controller for said power mechanism, a motor for said controller, and means for causing reversal of movement of said motor upon reversal of rotation of said shaft; substantially as described.
S7. The combination with an elevatorcar, power mechanism therefor, and au operative mechanism requiring reversal of movement, of a motor for said operative mechanism, two open circuits including said motor, each of said circuits being adapted to direct current through said motor in a different direction, a member adapted to cooperate with the terminals of either of said circuits to complete said circuit, and means for causing contact between said member and the terminals of a different one of said circuits upon reversal of movement of said car; substantially as described.
S8. The combination with an elevator-car, power mechanism therefor, and an operative mechanism requiring reversal of movement, of a motor for said operative mechanism, two open circuits including said motor, each of said circuits being adapted to direct current through said motor in a different direction, a member adapted to cooperate with the terminals of either of said circuits to complete said circuit, and means for shifting said member from the terminals of one of said circuits to those of the other thereof upon reversal of movement of said car; substantially as de scribed.
80. The combination with an elevator-car, power mechanism therefor, and an operative mechanism requiring reversal of movement, of a motor for said operative mechanism, two open circuits including` said motor, each of said circuits being adapted to direct current through said motor in a different direction, a member having two terminals in connection with a source of electricity, and means whereby upon the reversal of movement of said car the terminals of said member are caused to contact with the terminals of a different circuit from the circuit-terminals with which they were in contact prior to said reversal of movement; substantially as described.
UO. The combination with an elevator-car, and power mechanism therefor, of operative mechanism requiring reversal of movement, a motor for said operative mechanism, a rotatable shaft, connection between said car and said shaft whereby said shaft is caused to rotate by the movement of said car, the direction ot' rotation of said shaft being determined by the direction of movement of said car, and means whereby the direction of current to said motor is controlled by the rotation of said shaft, substantially as described.
9i. The combination with an elevator-car, and power mechanism therefor, of operative mechanism requiring reversal of movement, a motor for said operative mechanism, a rotatable shaft, hoisting-cables connected to said car and passing over said shaft, and means whereby the direction of current to said motor is controlled bythe rotation of said shaft, substantially as described.
02. The combination with an elevator-car, and power mechanism therefor, of operative mechanism requiring reversal of movement, a motor for said operative mechanism, a rotatable shaft, connection between said shaft and said car whereby the direction of rotation of the former is determined bythe direction of movement of the latter, circuits for the moter, which circuits when completed send current through said motor in different directions, termnals for said motor-circuits, and a member adapted to engage either set of said circuit-terminals to complete the respective circuit, one of said elements (said circuit-terminals or said member) being carried by said shaft, and the other said element being in position to be engaged by said shaftcarried element; substantially as described.
9.3. In an elevator' mechanism or the like, a rotatable shaft, means for rotating said shaft in reverse directions, operative mechanism, a motor therefor, an arm yieldingly engaged with said shaft to have its position changed by reversal of movement of said shaft, means for arresting the movement of said arm, and means carried by said arm for controlling the current to said motor; substantially as described.
Dt. In an elevator mechanism or the like, a rotatable shaft, means for rotating said shaft in reverse directions, operative mechanism, a motor therefor, an arm carrying means for controlling the current to said motor, means for arresting the movement of said arm, and a spring holding said arm in yielding engagcment with said shaft whereby the position of said arm is changed by reversal of movement of said shaft; substantially as described.
95. The combination with an elevator-car, and power mechanism therefor, of operative mechanism, and means for causing said mechanism to be energizedv at periods determined IOO lIO
by the travel of said car; substantially as described.
96. Thecombination with an elevator-car, power mechanism therefor, and a landing to which said car travels, of an-operative mechanism, and means'for automatically energiz` said contact-sections and said contact mem-l ber, and an operative mechanism in said circuit, whereby said operative mechanism can be energized at intervals controlled by the movement of said car; substantially as described.
98. In an elevator mechanism or the like, a car, a track for a contact member and having live and dead sections, a contact member carried by said car and having means for holding the same upon said track, an electric circuit including said live track-sections and said contact member, and an operative mechanism in said circuit; substantially as described. I
99. The combination with an elevator-car, power mechanism therefor, and an operative mechanism whose movement is designed to be reversed, Aof a motor for said operative mechanism, an electric circuitincluding said motor, and means for reversing the direction of the current through said motor, substantially as described.
100. The combination with an elevator-car, power mechanism therefor, and an operative mechanism whose movement is designed to be reversed, of a motor for said operative mechanism, an electric circuit including said motor, means for rendering the polarity of the` field-magnet constant, and means for reversing the polarity of the armature of said magnet; substantially as described.
101. The combination with an elevator-car,
and power mechanism therefor, of an operative mechanism requiring reversal of movement upon reversal of movement of said car, a motor for said operative mechanism,and means for changing the direction of current through said motor at every change of direction of travel of said car; substantially as described.
102. The combination with an elevator-car, power mechanism therefor, and a door, of
mechanism for controlling said car, an electric circuit including said mechanism,a switch in said circuit, connections between said door and said switch whereby the vlatter is operable by the former, and a second switch in said circuit, said second switch being operated by a movement incident to travel of said car; substantially as described.
103. The combination with an elevator-car, power mechanism therefor, and a door, of a controller for said power mechanism, a motor for said controller, an electric circuitincluding said motor, a switch in said circuit and operable by the movement of said door, said motor-circuit being also controlled by said controller and by the movement of said car; substantially as described. f
10i. The combination with an elevator-car, power mechanism therefor, and a kcontroller for said power mechanism, of Va track having` a dead section, a contact member carried by said car-and engaging said track, an electric circuitin'cluding said track and contact member, an electric circuit including a switch operable by said controller, and a motor for said controller included in both of said circuits; substantially as described.
105. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, of a track having a dead section, a contact member carried by said car and engaging said track, said dead section of track being so located that the said contact member engages the'same when the car is at a landing, an electric circuitincluding said track and contact member, an electric circuit including a switch operable by said controller, a motor for said controller in both said circuits, a switch controlling both of said circuits,and connections between said latter-mentioned switch and said door for Y operating the former by the movement of the latter; substantially as described.
106. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and adoor, of an electric circuit, a door-switch in said circuit, a motor vin said circuit, means for holding said motor and said controller out of operative engagement, and a magnet in said circuit for bringing said motor and said controller into operative engagement;v substantially as described.
107. The combination withan elevator-car, power mechanism therefor, a controller for vsaid power mechanism, and adoor, of an electric circuit, a door-switch in said circuit, a4 controller-switch in said circuit,'a motor in said circuit', means for holding said motor and said controller out of operative engagement, and a magnet in said circuit for bringing said motor and said controller into operative engagement; substantially as described.
108. The combination with an elevator-car, power mechanism therefor, a controller for said power mechanism, and a door, of a track having a dead section, a contact member carried by said car and engaging said track, said dead section being so located that it is engaged by said contact member when said car is at a landing, an electric circuit including said track and contact member, a controllerswitch, an electric circuit including said clontroller-switch, a motor for said controller and IOO IIO
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500072A (en) * 1948-05-04 1950-03-07 Clarence O Harmon Elevator door or gate operating mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500072A (en) * 1948-05-04 1950-03-07 Clarence O Harmon Elevator door or gate operating mechanism

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