US156067A - Improvement in elevators - Google Patents

Description

2 Sh eets sheet 1.

E. SGHLENKEB.

'Elevators.

Patented Oct. 20, 1874..

' No.l56,067.

' L ilmwea.

2 Sheet --Sheet 2.1

E. SCH LEN KER.

Elevators.

Patented Oct. 20, 1874.

. mam

THE emu-4m cumubrom-masan may ruczmx.

UNITED STATES PATENT OFFICE.

Eli-HARD SOHLENKER, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF HIS RIGHT TO RUFUS L. HOWARD AND GIBSON F. HOWARD, OF SAME PLACE.

IMPROVEMENT IN ELEVATORS.

Specification forming part of Letters Patent No. 156,067, dated October 20, 1874 application filed June 16, 1874.

To all whom it may concern:

Be it known that I, ERHARD ScnL nKER, of Buffalo, in the State of New York, have invented a Power Hoisting-Machine, of which the following is a specification:

The object of my invention is to provide an economical, safe, and rapid hoisting-machine, for operation by steam power.

In the accompanying drawings, Figure 1 is a perspective view, showing my improved hoisting-machine. Fig. 2 is a vertical sectional view of the platform, showing the ways, safety-ratchets, &c. Fig. 2, a a, is a crossscction of one side of the platform-ways; and Fig. 2, b b, is a vertical section of part of the ratchet.

A A represent the upright ways B, the

I ratchet; G, the platform; D, the draw-head,

secured to the uprights e e. f is the safetyweight or counterpoise, connected with the cam g by means of the rope or chain 00. h is the lifting rope or chain that connects with the winding-drum. These ropes or chains a and h pass over pulleys w and h, and connect with the cam g. 3 y are levers or bars at- I tached to the draw-head D, the inner ends of which are arranged to be operated by contact of the cam g, and their outer ends have loops or eyes through which are passed the upper ends of long spring ratchets or bars Z Z. These ratchetbars Z extend downward, and are secured to the uprights e 6, near to the platform 0. Their upper ends are also connected to the draw-head D by springs z.

The operation of the safety device is as follows: The ropes h and It being firmly secured to the outer periphery of the cam g, the latter will be retained in its normal position so long as there is any strain on the lifting-rope, or so long as the platform continues to be suspended thereby, and in this position the platform will be free to rise and descend, as required; but should the lifting-rope from any cause break, or become detached, so as no longer to suspend and sustain the platform, the counterpoise weight f will then operate by its gravity, and through its connecting-rope X will cause the cam to turn on its shaft or spindle and push out the rods or levers y, the

inner ends of which rest against the face of the cam, thereby causing the ratchet ends of the spring-bars z to engage with the ratchets B, and immediately arrest the fall of the platform, and hold it securely until the damage or break in the lifting-rope is repaired.

J is a shaft, having a gear .,or pinion, j, which controls the operation of the brake and shipper bar K, for shifting the belt D on the pulleys. l is a crank on the end of the shaft J. m is the brake-lever, having a shoe, m. The free end of the lever m is connected with the crank l, by means of a rod, 1, a rubberblock or cushion, Z, being inserted between the head of the rod l and the end of thelevers, so as to break the blow and compensate fonwear. n is the brake-pulley, which is mounted on the shaft 0. p is a grooved wheel on the inner end of the shaft J. g is a rod passing vertically through brackets or eyes q, secured to one of the ways A. It is provided with a number of projecting dogs, 8, which are adjustably secured to the rod at any required distance apart. 4" is a cord, which connects the rod q with the grooved wheel or pulley p. t represents a stopping and locking device, which is secured to the 11 right 6 next to the rod q. As shown by' s and lpof the drawings, it consists of a racket'or arm, 1/, to the outer end of which is pivoted two lockin g-levers, 0 o, and to which is also secured a projecting-arm or stop-pin, p. O is a hollow shaft mounted in proper bearings, on one end of which, as before stated, is thebrake-pulley a. V V are two band-pulleys, loosely mounted on this shaft, and m is a tight pulley secured to said shaft, so as to turn with it. Belts 1; 1:, arranged to run in opposite directions, connect these pulleys with the counter-pulley 1c. t' represents the winding-drum, mounted on the shaft 0, and provided with internal bearings d d, for the gear wheels or pinions g g.

and 11' i. h is the internal gear-wheel to which the power is transferred from the pinions g g. It is keyed fast to pinion 70 which revolves loose on the shaft 0. The pinions t" t" transfer the power, and are connected by gearing in the inner side of the drum i and to pinion lo n is a notch-or angular opening cut in flange of the windingdrum i, in which the end of the rope is secured in such manner that in case the platform gets foul and the rope unwinds it will become detached from the drum. to is a small cord, attached at one end to the grooved pulley p, and passed between two small pulleys near the bottom, and over another at the top of way A, its other end carrying a weight, 21/. This device is used to stop the elevator should the starting-rod q fail to operate. The rope or cord a being fastened to the grooved pulley on a line passing between the two small pulleys, it will wind in the grooved pulley in either direction, and by pulling upon it it will operate to stop the machine in the same manner as the rod q, as

hereinafter more fully set forth.

The operation of the machine not previously hereinbefore set forth, is as follows: In order to start the machine by pulling down uponv the starting or stopping rod q the shaft J will revolve through the operation of the wheel 19, and, revolving, will move the shipping-rod la, and thereby ship the belt from the loose to the tight pulley, at the same time releasing the brake from the pulley or wheel a. The

shaft 0 will now revolve, and with it the Winding-drum I, and thereby, through the winding of the rope h, the platform will be elevated. When it is desired to stop the platform the operator turns the.l0wer lock-lever 0 so that it will strike one of the dogs 8, and, remaining in contact with it, will raise the rod q, thereby-reversing the operation before described, and stopping the machine; To look the machine when the desired elevation is reached, the upper locking-lever is turned so as to turn the rod q and bring the dog between the lockinglevers, thereby securely holding it,

- so that it cannot be moved in either direction,

or the machinery be disturbed or operated until again set in motion by the operator upon the platform. To reverse the motion and cause the platform to descend, both the lockinglevers 0 are turned out of the way, and clear of the dogs on the rod q, which is then lifted up, thereby causing the shaft J to revolve in the opposite direction from that before described, thereby releasing the brake-shoe and shifting the belt, as before, and causing the platform to descend until the stop-pin p of the device t comes in contact with the lower dog 8, and again stops the machine. The same pin p will prevent the platform rising too high by coming in contact with the upper dog 8, which is secured at the proper height on the rod for that purpose.

In case the platform should meet with any obstruction in its descent, and the lifting-rope uncoil itself off from the drum, it will become detached orunhooked as soon as all is uncoiled through the notch or opening, allowing the knotted end to slip out, and thereby be prevented from rewinding upon the drum in an opposite direction.

Having thus described my improved hoisting apparatus, what I claim as my invention,

and desire to secure by Letters Patent, is-

l. The cam g, in combination with the lever y, spring-bars z, and ratchets B, substan tially as and for the purpose specified.

2. The rod q, having dogs s or equivalent device, operating in combination with the levers or striking and locking bars 0 0, stop-pin p, cord 1', and wheel 19, and with hoisting mechanism, substantially as and for the purpose specified.

3. The flanged drum 6, having countersink notches n for the reception of the knotted end of the rope h, as and for the purpose set forth.

4. The combination of the drum t, shaft 0, pulleys V V and m, shipper-bar 7c, shaft J, and pinion j, all operating in connection with a starting and stopping device, substantially as and for the purpose specified.

5. In combination with the starting and stopping device, the shaft J, crank 1, rod l, rubber-block l, lever m, and shoe m, all operating substantially as and for the purpose specified.

Eli-HARD SGHLENKER.

Witnesses:

P. P. BURrIs, SoLoMoN FINLEY.

Images