US1173140A - Elevator cable and rope lock. - Google Patents

Description

S. W'. ALEXANDER.

ELEVATOR CABLE AND ROPE LOCK.

APPLICATION FILED AUG. 1. 1914.

1,173.,M0, Patented Feb. 22,1916.

THE COLQJMBIA PLANOGRAPH .co., WASHINGTON. B. c

seem an ALEXANDER, or LONG BEACH, CALIFORNIA.

ELEVATOR CABLE AND ROPE LOCK.

invsiao.

Specification of Letters Patent.

Patented Feb. 22, rate.

Applicationfiled August 1, 1914. Serial No. 854,592.

To all whom 2'2) may] concern Be" it known that I, Sco'rT W. ALEXANDER, acitizen of the United States, residing at Long Beach, in the county of Los Angeles and State of California, have inventednew and useful Improvements in Elevator Cable and Rope Locks of which the following is a specification.

This invention relates to improvements in looks for ropes or cables, especially in locks for ropes or cables for hoisting apparatus on elevators.

It is an object of this invention to provide a lock which can be easily and readily applied to various makes of elevators and to various sizes of rope or cables and which will not wear the cable.

It is a still further object to provide a lock which will act by compression upon the rope or cable.

I attain these objects by the elevator lock shown in the accompanying drawing, in which:

Figure 1 is a perspective view of my improved lock. Fig. 2 is a plan view of a preferred form of my improved lock with the upper plate removed. Fig. 3 is a plan view of a modified form of my lock with the upper plate removed. Fig. 4% is a section taken on line eti of Fig. 2.

More specifically, 5 indicates a bracket having a foot 6 which is mounted upon the hoisting car body and has securing means which are preferably screw holes 7 through which screws may be passed to attach the bracket to the car. The bracket Wall 8 is apertured to receive a bolt 9 which secures to the bracket 5 a disk 10. Disk 10 is preferably substantially circular in shape and has an extension 11 in which the bolt aperture is located.

Disposed adjacent the periphery of the disk 10 is an aperture 31 which is greater in diameter than the hoisting cable or rope. Secured to the disk 10 preferably by screws 13, is a spacing plate. Plate 12 has a slot 14 cut therein for registration with the aperture 31. The edge of the slot 14 is set back from the edge of the aperture 31.

Pivoted to disk 10 by a pin 15 is a lever 16, which in my preferred form of construction shown in Fig. 2 has secured upon one side a leaf spring 17. Leaf spring 17 is preferably integral with lever 16 and may be formed by slotting a bar longitudinally. Abutting the opposite side of lever 16 is an angle spring 18 pivoted at its apex to the disk 10 with arm 19 resting in a sh0uld'er20 on plate, 12, and'the other arm 21 in engagement with lever 16. An operating lever 22 is pivoted adjacentthe periphery of disk 10 with one arm extending exterior of the periphery and having a pivoted handle attached thereto. The end 2% of operating lever 22 engages the spring 17.

A circular disk member 25 is secured to disk 10 by means of bolts 26. A stop pin 27 is disposed near the peri ahery of disk 10 to limit the movement of the operating lever Apertures 28 are disposed in the disk 10 on the opposite side of lever 22 for the reception of a stop pin for limiting the movement of lever 22 in the other direction. The apertures are so arranged that the limitmg position of lever 22 may be adjusted according to which aperture is selected for the stop pin.

A modification shown in Fig. 3 embodying my invention differs from my preferred construction only in the substitution of an angle spring 37 for leaf spring 17. Angle spring 37 is pivoted to disk 10 by pin 38, arm 39 of the spring engaging lever 22 and arm a0 engaging lever 16. Spacing plate 12 is slotted at the ends so that lever 16 may move in and over the edges of aperture 31.

litiy improved lock is installed upon the hoisting car by so securing it that the aperture 31 registers with the hoisting cable which is passed through the apertures in the plates 25 and 10. During the time the car is being moved lever 22 is in the position shown in Figs. 2 and 3, spring 18 pressing compression lever out of engagement with the rope 41. When it is desired to lock the car in any position, lever 22 is moved by means of handle 23 into the position shown in dotted lines in Fig. 2. The spring 18 tends to force the compression lever 16 out of engagement with the rope 11, but the lever moves to the left where it is held in position by the stop pin. The car is released by moving the lever 22 into the position shown in full lines spring 18 forcing the compression lever o er out of engagement with the hoisting rope 4-1. but being limited in its movement by pin 27.

In its locking position compression lever 16 is forced against the hoisting rope 4-1, pressing it against the edges of the aperture in disks 10 and 25, bending the rope slightly into the recess formed by the edge 14: of

plate 12 and holding the rope by compression in fixed engagement with the lock, thereby preventing movement of the car.

What I claim is 1. A lock for elevator cables or ropes, comprising spaced disks disposed transverse to the cable having alined apertures therethrough for the passage of the cable, a compression member provided with a spring pivotally mounted between said disks for movement transverse to and into engagement with the cable, an operating lever pivotally mounted between said disks with one arm in engagement with the compression member, said arm being of greater length than the normal between'the pivot point and compression member, and a stop disposed to limit movement of the lever when in locking position.

'2. A look for elevator cables or ropes, comprising disks disposed transverse to the In witness that I claim the foregoing I have hereunto subscribed my name this 25th day of July, 1914.

SCOTT WV. ALEXANDER.

Witnessesf CLARENCE P. THOMPSON, IVILLIAM S. STEVENS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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