US798928A - Elevator. - Google Patents

Description

PATENTED SEPT. 5, 1905. J. J. SCHWOB.

ELEVATOR.

APPLICATION FILED M116. 1905.

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PATBNTBD SEPT. 5, 1905' J. J. SCHWOB.

ELEVATOR.

APPLIoATIoN FILED un. 16. 1905.

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UNITE STATES ifATEN'I" FFIOE.

ELEVATOR.

Speccation of Letters Patent.

Patented Sept. 5, 1905.

Application filed January 16,1905. Serial No. 241,308.

To [LIZ uftmn/ it 71mg/ concern.

Be it known that I, Jo'HNJ. Scuwon, aciti- Zen of the United States. and a resident of St. Louis,Missou1i,liave invented certain new and usefulImprovements in Elevators, of which the following is a specification, containing' a full, clear, and exact description, reference being' had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in elevators; and it consists of the novel features herein shown, described, and claimed.

In the drawings, Fig'ure l is a perspective of an elevator-shaft and an elevator-car ernbodying the principles of myinvention. Fig. 2 is an enlarged inside elevation of the draftoperating mechanism. Fig'. 3 is an outside elevation still Vfurther enlarged, said view being the reverse of Fig'. 2 and parts being' broken away to economize space. Fig. I is a vertical sectional detail on the line -I 4: in Fig. B and looking' in the direction indicated by the arrow. Fig. 5 is a horizontal sectional detail on the line 5 5 of Fig. 3 and looking' downwardly. Fig. 6 is a cross-section on the line 6 6 of Fig'. 8 and lookingin the direction indicated by the arrow. Fig'. 7 is a perspective of one of the switch-operating levers. Fig. S is a perspective upon an enlarged scale, illustratingl the construction and operation of one of the switches. Fig. 9 is a perspective of the door-latch. Fig. l() is aside elevation of the draft mechanism. Fig. l1 is a crosssection.

Referring to the drawings in detail, the elevator-shaft comprises corner-posts l5, 16, 17, and IS, the channel-bar I9, half-way between the posts and 16, and the channelbar 20,half-way between the posts 17 and 18. The guide-bars 2l and 22 are rigid with the. elevator-car .23 and travel up and down inthe channel- bars 19 and 20. The spacing-brackets a and Q5 are attached to the guidebar 2Q and the draft-operating' mechanism, comprising' a straightway 26, the cam 27 communicating with the ends of the straightway, the upper switch 28, pivotally mounted in position to close the upper end of the straightway and open the upper end of the camway, and vice versa, the lower switch 29, pivotally mounted in position to close the lower end of the straightway and open the lower end of the camway, and vice versa, and means for operating the switches. The

bearing-block is located below the junction at the upper ends of the camway 27 and the straightway 26. A sleeve 3l is rotatably mounted in this hearing-block, and the shaft 3Q is rotatably mounted in the sleeve. The switch Q8 is lixed upon the inner end of the shaft 32, and a stop 33 extends Vfrom the switch into a stop-recess 34, formed in the periphery at the end of the sleeve 31, so as to make a limited amount of lost motion between the sleeve 3l and the switch 28. A coil-spring 35 is mounted upon the sleeve 31, one end of the spring' being' connected to the sleeve and the other end of the spring being connected tothe switch QS, the tension of the spring' being' exerted to hold the switch Q8 yielding at one end of the lost motion. A wheel 36 is rigid with the center of the sleeve 3l, said wheel having a latehing-tooth 3T. A coil-spring' is mounted upon the sleeve 31, one end of the spring being attached to the sleeve and the other end of the spring being attached to the bearing-block 30, the tension on said spring being' exerted in a direction opposite to the tension of the spring' 35, said tension being exerted in opposition to' the tooth 37. A bell-crank lever39 is lixed upon the opposite end of the shaft from the switch 28 and at right angles to the switch. A latch 40 is slidingly mounted in bearings eil, extending' inwardly from the bearing-block 30 in position to engage the tooth 37, and the sp1-ing? holds the latch yieldingly against the periphery of the wheel 36.

A switch 29 is mounted upon its shaft 43 in a bearing-block La above the junction of the lower ends of the camway with the straightway, and the bell-crank lever is fixed upon the inner end of the shaft at right ang'les to the switch. 'lhe rod 'TLG connects the bell -crank levers 3%) and 45, so that the switches Q8 and 29 will operate simultaneously, so that when the upper end of the camway is closed by the switch 2S the lower end of the camway will be closed by the switch 29, and vice vcx'sa.

The cord 47 is attached to the latch et() and extends downwardly under a guide-roller 48 to a foot-lever il), said foot-lever being' in convenient position Vl'or the operator, so that when the foot-lever is pressed the cord -I'T is pulled to release the latch et() from the tooth 47.

A shaft 50 is mounted through the lower part of the bearing-block 30. A crank-arm 3l is lixed upon the inner end of the shaft, and an operating-arm 52 is fixed upon the outer end of the shaft, said arms 51 and being in horizontal alinement in opposite direction and the arm 52 being immediately in front of the camway 27. A shaft 53 is mounted through the lower bearing-block 54. A crankarm 55 is fixed upon the inner end of the shaft, and an operating-arm 56 is fixed upon the outer end of the shaft, said arms being normally in horizontal positions and extending in the same direction and the arm 56 being in front of the camway. A rod 57 connects the arms 51 and 55, and a rod 58 connects the arm 51 to the arm 39, so that the switches may be closed by operating the arm 52 upwardly or the arm 56 downwardly. The lower end of the rod 58 is slidingly con-r nected to the arm 51, so that when the arm 52 swings downwardly the switches will not be moved or when the arm 52 swings upwardly the switches will be moved to their closed positions. rlhe lower end of the rod 57 is slidingly connected to the arm 55, so that when the arm 56 swings upwardly the switches will not be moved and when the arm 56 swings downwardly the'switches will be moved to their closed positions.

The draft-block 59 is mounted between the channel- bars 60 and 61, the channel of said bars being toward each other and said channel-bars being mounted horizontally between the posts 17 and 20, one set of bars for each Hoor or landing'. A roller 62 is mounted at each corner of the draft-block, said rollers operating' in the channels of the bars 60 and 61, so as to provide antifriction-bearing for the draft-block and so that the draft-block will move back and forth between the channel-bars. Arms 63 and 64 extend outwardly and downwardly from the draft-block 59, one on each side of the channel-bar 61, and the spring-seat 65 is mounted vertically between said arms. Arod 66 extends from the pulleyframe 67 through the spring-seat 65. Aspringseat 68 is mounted upon the end of the rod, and -the spring 69 is mounted upon the rod between the spring-seats 65 and 68. A groovepulley 7 O is mounted in the pulley-frame 67. A groove-pulley 71 is mounted in the pulleyframe 72, said frame being attached to the `post 20, and an eye 73 is attached to the post 20. A cord 74 is attached to the eye 73 and extends around the pulley 70, around the pulley 71, over the guide 75, to the latchbar 76.

The lug 77 projects inwardly from the center of the draft-block 59. A roller 78 is placed endwise against the lug 77, and a cap-screw 79 is inserted through the roller and screwseated in the lug to form a pintle for the rolle-r, the head of the cap-screw being recessed into the roller.

A bearing-block 8O is secured to the door 81 near its rear edge, and a second bearingblock 82 is secured in horizontal alinement of the bearing-block 8O in front of the door, and the latch-bar 76 is slidingly mounted in these bearing-blocks, the bearing-block 82 being elongated up and down, so as to allow the inner end of the latch-bar to vibrate. A lever 83 is pivotally connected to the inner end of the latch-bar and to the door, said lever being inclined to an angle about forty-tive degrees relative to the latch-bar, the upper end of the lever being nearer' to the outerl end of the latch-bar than the lower end. A spring 85 connects the lever 83 to the door, the tension ofthe spring being exerted to hold the latchbar down in its forward position, so that when a quick movement is applied to the cord 74 it will slightly pull the latch-bar outwardly, and as the latch-bar moves outwardly the lever 83 will raise the inner end, thereby disengaging the tooth 86 of the latch-bar from the tooth 87, fixed upon the post1'5, so as to unlatch the door. The door 81 is hung at its top by means of common wheeled hangers mounted upon the usual inclined rail.

The roller 78 is in position to pass through either the straightway 26 or the camway 27 as the elevator-car moves up and down. Assuming that the switches 28 and 29 are normally in the position shown in Fig. 24that is, with the camway closed-then the roller 78 will pass up andvdown through the straightway 26, and the doors 81 will not be opened. If the operator desires to open a door, he will press the foot-lever 49, thereby releasing the latch 40 from the tooth 37 and allowing the tension of the spring 38 to move the switches and close the straightway. Then the roller 78 will pass downwardly into the camway 27 and operate the draft-block 59 to the left, thereby pulling the cord 74, moving the latch-bar to the right, disengaging the tooth 86 from the tooth 87, bringing the lever 88 against the bearing-block 82, and moving the door to its open position. rEhen as the roller 78 passes outwardly past the center of the camway 27 the cord is released and the door allowed to close, which it does by the action of gravity, and as the roller passes the arm 56 said arm will be swung outwardly, thereby moving the switches to their normal positions with the latch 40 in engagement with the tooth 37 and the straightway open. When the elevatorcar passes upwardly, the roller 78 will pass into the lower end of the cam way 27, and therefore open the door, and as said roller continues to move upwardly it will swing the lever 52 upwardly and return the switches to their normal position.

I claim- 1. In an elevator: a car; a gate; a draftblock; a connection between the gate and draft-block; a straightway carried by the elevator-car and normally open; a camway also carried by said car; switches controlling the straightway and camway; means whereby the operator throws the switches when desired; and means whereby the elevator-car restores the switches to their normal position.

2. ln an elevator: a car; a gate; a draftby the elevator-car and normally7 out of action; means whereby the operator places the cam in action so to release the latch and open the gate; and means whereby the passage of the elevator-car puts the cam out of action.

V[n testimony whereof I have signed my name to this specification in presence of two sub- Seribing witnesses.

JOHN J. SCHWOB. Vitnesses:

ALFRED A. Eioiis, M. D. SCHULZE.

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