US1390721A - Elevator-controlling device - Google Patents

Description

C. F. QUICK. ELEVATOR CONTROLL ING DEVICE. APPLICATION FILED SEPT. 15. 1920.

Patqnted Sept. 13, 1921.

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APPLICATION FILED SEPT 15, 1920.

PatentedSept 13, 192 1.

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C. F. QUICK. ELEVATOR CONTROLLING DEVICE.

APPLICATION man sum 15, 1920.

Patented Sept. 13, 1921.

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attorney Jig .12 5g CHARLES F. QUICK,

imam OFFICE.

OF DLATJLAS, TEXAS.

ELEVATOR-CONTROLLING DEVICE.

Specification of Letters Patent.

Patented Sept. 13, 1921.

Application filed September 15, 1920. Serial No. 410,496.

T 0 all whome't may concern:

Be it known that I, CHAnLnsF. QUICK, a citizen of the UnitedStates, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Elevator-Controlling Devices, of which the following is a specification.

This invention relates to new and useful improvements in elevator controlling devices.

The invention has particularly to do with means for breaking or opening the main electrical circuit when the door to the elevator is opened, and maintaining such condition until the door is closed; thus preventing the starting of the elevator car untilthe door is closed. A particular feature of the invention is the provision of means whereby thedoor must not only be closed, but latched before the circuit is closed and before the car can be operated. One of the purposes ofthe invention is to arrange the parts in such a manner that they will not interfere \viththe operation of the elevator car or offer pro jections or obstructions which might be exposed through the opening at the front of the elevator car, thuseliminating the possibility of entangling the clothing of the passengers who might be standing near said opening whilethe car is in operation. Another purpose is to eliminate unnecessary parts and to precludethe disarrangement of the working parts as well as injury to the same. Another feature of the invention is the provision of such adjustments which will make for the proper timing of the operating parts to suit the various conditions under which the device may have to operate.

In carrying out the invention I provide a circuit controlling device arranged to be mounted on top of an elevator car. The device is provided with a movable switch mem ber whereby the circuit is opened and closed. Means is provided on the switch member to project in the path of an operating element mounted on the door of the elevator shaft and so arranged that when the door is; opened and closed the switch member will be moved to open and close the circuit. A particular feature is the arrangement ofthe parts whereby it is necessary to bring 'the elevator door to a position where it will be latched, before the switch member is moved to the point to close the circuit. The device 1s also arranged so thattherecanbe no conflict between the operating member and the parts carried on thecar.

The invention will be more readilyunderstood from a reading of the "following specification and by reference to the accompanylng drawings, in. which an example of the invention is shown, and wherein:

Figure 1 is a partial elevation of an elevator door and car,the door being openand a device constructed in accordance withmy invention being mounted on top ofthe elevatorcar with the switch member in its open position whereby the circuit is broken, Fig. 2 is a side elevation of thesame, Fig. 3 is a detailshowing the spring finger carried by the operating yoke,

Fig. 4 a front elevation of the controlling device,

Fig. 5 is a rear elevation of the same,

Fig. 6 is a side elevation of the same,

Fig. 7 is a View showingthe'controlling device in vertical section and indicating the circuit connection with the elevator car,

Fig. 8 is a plan view. of the spring finger, Fig. 9 is a plan view of a portion of an elevator car and door showing the door latched, but the switch member is in open position,

F 10 is a similar view showing the door fully closed and the switchmember in its closed position whereby the circuit is closed, Fig. 11 showsthe latch engaged before the door is fully closed,

Fig. 12 is a detail showing a door fully closed and the latch still engaged, a Fig. 13 is a plan view of the hinge joint of the operating yoke, and

Fig. 14 isan elevation of thesame. In the drawings thenumeral 10 designates a switch or controlling box which has its front side open. The box is supported be tween upright brackets 11 having its sides attached thereto by screws 12 passing throughholes 13 in said brackets. The holes .13 are arranged at intervals whereby the i the top of an elevator car by screws 1 1.

In the front open side of the box a door or switch member '15 is mounted along one side by a hinge 16 so as to swing outwardly. The

box is disposed at such an angle that the angularity of the brackets as well as the angle at which the box is mounted in the brackets as will be clearly seen from observa tion of Figs. 41, 5 and 6, in particular.

The swinging of the door is controlled by two elements, one of which is an operating element or bar 17 mounted on the elevator door B. The door B is not carried by the car A, but is mounted in the elevator shaft at the floor landing, there being a door at each landing. The bar 17 is arranged to project upwardlyof the door and is disposed at the edge of the door near the center of the car, which edge is usually not exposed by the opening or doorway inthe car which is generally less in width than the elevator door. It is customary to make the front of elevator cars with a doorway and a closed panel. By arranging the bar 17 at the inner edge of the door. it will be covered by the panel when the elevator car passes the same. On the face of the door 15 and near its lower end a yoke 18 is mounted. The box is mounted so that when the elevator car travels up and down the shaft the bar 17 will be received within the yoke 18, and the bar has sufiicient length to remain within said yoke when the car is stoppedat the floor landing or either a few inches above or below said landing. When the door is slid to open the same the bar 17 engages one of the sides of the yoke will swing the door 15 open.

The other element which contributes to the operation or swinging of the door is a counter-balancing weight 19 mounted on a screw threaded stud 20 extending outwardly from the upper portion of the door. It is pointed out that after the door has been swung outwardly or opened to a predetermined point, the weight will continue the swinging of the door, thus permitting the bar 17 to pass onward until the door B of the elevator is fully opened. By adjusting the weight 19 inwardly and outwardly, the

pointat which it begins toswing the door may be regulated. An arm 21 mounted on the side of the box is engaged by the yoke 18 to support the door 15 when the same has been fully opened. The stop arm 21 holds the part so that when the elevator door B is closed it will pass'the near side of the yoke 18, but engage the opposite side or leg and thus swing th door 15 to close the same.

After the door 15 has been swung to a certain position it will be overbalanced by the weight 19, which will continue the swinging movement and thus close the door 15.

lVithin the box 10 I mount terminal sockets 22 which are suitably connected with the controlling means of the elevator car as in dicated in Fig. 7, the details of such connection being considered unnecessary as it is very necessary to connect the maincircuit of the elevator in series with the terminals 22. Each terminal 22 has secured therein a contact 23 which may be of carbon or any other suitable material. On the inner side of the door 15 a contact plate 21 is disposed and is carried on a bar 25 of insulating material. The bar' 25 has a stem 26 passing through a hole in the door 15, and carries a nut 27 on its outer end which limits the inward displacement of said bar. Spring guides 28 are seated in the inner face of the door and are attached to the bar 25 so as to force the plate 24 into close contact with the contact 23 when the door 15 is closed as will be obvious. It will be seen that when the door 15 is closed the main circuit of the elevator is closed and when said door 15 is opened said circuit will be broken or opened.

In case the elevator door B should be left open, the bar 17 might strike the yoke 18 when the elevator car was passing up or down. By observing the drawings it will be seen that when the door 15 is closed only the left hand side of the yoke is in the path of the bar 17 and on this side of the yoke I" provide a finger 29 which is pivoted and held by a spring 30 so that it is free to swing upwardly or downwardly and will be returned to its normal position by its spring as will be obvious. If by some manipulation the door 15 of the box should be closed and the door B still remain open. upon attempting to close the door B the bar 17 would strike against the side of the finger 29. In order that the door B may be fully closed and no harm done under such a condition I provide a hinged joint 31 in the bottom of the yoke as is illustrated in detail in Figs. 13 and 1 1-. I include with this joint acoil spring 32 having one end bearing against the hinged side of the yoke and tending to hold the same in a normal position. The hinged joint is arranged so that the left hand side of the yoke can swing only to the right and cannot swing to the left; thus when the finger 29 is engaged by the bar 17 in opening the elevator door B, the left hand side of the yoke will not swing on its hinge joint 31, but will only swing when the elevator door is moved to the right and engages the finger from its left hand side as will be obvious.

When the elevator car arrives at the floor landing the bar 17 will stand within the yoke 18 andthe door B of the elevator shaft will be fully closed asis shown in Fig. 10. All elevator doors are provided with a latch of some character and I have indicated the same inthe drawings by numeral 33. The latch engages a pin or stub 34 on the door jamb 35. The operator must firstraise this latch and disengage it from the in 34 beforethe door B can be opened. 1 opening the door the operator slides the same to the left, whereby the bar 17 enga es the finger 29 of the yoke 18 and swings he door 15 of the box 10 outward, thereby opening the same. When the door 15 is swung outward the contact plate 24 is withdrawn from the contacts 23 and the main circuit thus broken. The bar 17 swings the door 15 outwardly until it is overbalanced by the weight 19 which continues the outward swing of the door 15 until the latter comes to rest by the yoke engaging the arm 21. With the parts in this posltion the finger 29 iswithdrawn from the path of the bar 17 so that the opening of the door B may be continued freely.

With the main circuitbroken the elevator car cannot be started until the door is closed. The operator slides'the door B to the right and as said door approaches the jamb 35 the bar 17 is carriedinto the yoke so as to engage the ri ht hand member thereof and thus swing t e door 15 to close the same. The parts are so arranged that the latch 33 will ride over and engage the hinge 34 as is indicated in Figs. 9 and 11, before the door 15 is fully closed and the circuit closed. This action is controlled by the adjustment of the counter-balancing weight 19 and the curvature of the right hand member of the yoke 18. The yoke must be swung to a certain point before it overcomes the influence of the weight to hold the door in an open position. The parts may be timed so that the door 15 will close immediately after the latch engages the pin 34, and thus when the closing of the door B is completed the door 15 will be closed and the circuit will be closed so that the elevator car may be operated.

It is pointed out that the operation of the door 15 may be'controlled to a minute degree by adjusting the weight 19 which may be readily accomplished. The device comprises a few number of parts and may be readily placed in position without altering the elevator or its e uipment.

It is pointed out t at the swinging of the door 15 of the switch box is not dependent upon the counter-balancing weight as after said door is swung past the point of center of gravity, it will continue to swing without assistance from other e ements.

What I claim, is:

I 1. In apparatus of the character described, a circuit closing member adapted to be pivotally mounted upon an elevator car and having its axis of turning movement inclined whereby the member will automatically continue its turning movement in the same direction when being swung past dead center, and means including an element adapted to bemounted upon a landing door to effect the starting turning movement of said member.

2. In an elevator controlling device, the combination with a sliding elevator door having a latch for fastening it in its closed position, of an operating member carried by the door, aswitch box mounted on an elevator car, a swinging switch member mounted on the box and carrying an electrical contact for closing the elevator circuit within the box, an operating device mounted on the switch member in the path of the operating member carried by the door, the switch member being swung by the operating member and operating device when the door of the elevator is opened, and means for controlling the swinging movement of the switch member whereby the elevator door is latched before the switch member completes its movement and before it closes the circuit.

3. In an elevator controlling dcvice,a box, means for supporting said box at an angle, a swinging door mounted on the box, electrical contacts mounted in the box, a circuit closing element carried by the door and adapted to engage the contact when the door is closed, a yoke mounted on the door for swinging the same, and a counter-balancing weight mounted on the door for controlling the swing of the same, in combination with an operating member adapted to be mounted on the landing door of a shaft.

4. In an elevator controlling device, a pair of angular brackets, a box mounted at an angle to the perpendicular between said brackets, a door hinged on said box, contact for electric circuits mounted in the box, a

circuit closing member carried by the door in position to engage the contact, the counterbalancing weight mounted on the door, and a yoke mounted on the door and including a resiliently mounted finger on a hinged side, in combination with an operating member to be received within the yoke for swinging the door.

5. In apparatus of the character described, a circuit closing member adapted to be pivotally mounted upon an elevator car and having its axis of turning movement inclined with respect to the perpendicular, and means including an element adapted to be mounted upon a landing door to effect the movement of said member.

6. In apparatus of the character described, an elevator car, a circuit associated therewith, a landing door, a circuit closing member pivotally mounted upon the elevator car and having its axis of turning movement inclined from, the perpendicular, a weight carried by said member and extending laterally therefrom, andmeans including an element mounted upon the landing door to turn said member.

7 In apparatus of the character described, an elevator car, a circuit associated therewith, a landing door, means to open and close the circuit includinga member pivoted upon the carand having its axis of turning ing arms.

8. In apparatus of the character described, an elevator car, a circuit associated therewith, a landing door, means for opening and closing the circuit including a member pivotally mounted upon the car and having its axis of turning movement inclined, a rod connected with the member and extending laterally therefrom, a weight adjustably mounted upon the rod, and means including an element mounted upon the landing door to effect the movement of said member.

9. In apparatus of the character described, an elevator car, .a circuit associated therewith, a landing door, a casing mounted upon the elevator car and inclined from the perpendicular, a door for the casing pivotally mounted thereon and having its axis of turn ing movement substantially parallel with the longitudinal axis of the casing, circuit closing means actuated by the door, a weight attached to the door and extending laterally therefrom, a pair of shifting arms carried by the door, and an element carried by the landing door and adapted to cooperate with said shifting arms.

10. In apparatus of the character described, an elevator car, a circuit associated therewith, a landing door, means for opening and closing the circuit including a swinging member, a shifting fork secured to the member and embodying a pair of arms, means whereby one arm may swing in one direction generally horizontally, such arm embodying a vertically swinging extension, and an element mounted upon the landing doorv to co-act with the shifting fork.

11. In apparatus of the character described, as a subcombination, a shifting fork adapted to be mounted upon an elevator em bodying a pair of spaced arms, which are adapted to receive therebetween a bar carried by a landing door, one arm having a spring pressed hinged joint to permit the same to swing generally horizontally in one direction with relation to the other arm.

12. In apparatus of the character described, as a subcombination, a shifting fork adapted to be mounted upon an elevator embodying a pair of spaced arms, which are adapted to receive therebetween a bar carried by a landing door, one arm having an extension pivoted thereto and adapted to swinggenerally vertically in either direction, and yielding means to normally retain said extension in an active position as a continuation of its arm and to return the same to such position when removed therefrom and released.

In testimony whereof I afiix my signature.

CHARLES F. QUICK.

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