US336630A - Bernard p - Google Patents

Description

(No Model.)

B. P. DARLING.

HOISTING MACHINE.

No. 336,630.' Patented Feb. 23, 1886.

% Mil WW y UNITED STATES PATENT OFFICE.

BERNARD P. DARLING, OF SHORTSVILLE, NEW YORK, ASSIGNOR OF ONE-HALF TO JOHN H. PETTIT, OF SAME PLACE.

HOISTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 336.630, dated February 23, 1886.

Application filed October 21, 1885. Serial No. 1F0,501. (No model.)

To all whom it may concern: v

Be it known that I, BERNARD P. DARLING, of Shorts'ville, in the county of Ontario and State of New York, have invented a certain new and useful Improvement in Hoisting-Machines; and I do hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the drawings accompanying this application.

My improvement relates to that class of hoisting-machines in which the hoistingrope is connected with a car or carriage that runs on a track, so that when the load has been raised vertically to the car it trips the fastening of the same,and the car, with the elevated load, is then drawn along to the point where the load is' to be deposited. Itis particularly adapted to unloading hay.

The improvement is as follows:

In the drawings,Figurel is aside elevation of the apparatus mounted on a track in the peak of a barn. Fig. 2 is an enlarged sectional elevation of the car. Fig. 3 is a plan view of the yoke or traveler that runs on the track. Fig. 4 is an end elevation of Fig. 1, looking in the direction of the arrow at the left. Fig. 5 is a diagram showing a rear elevation of the.

swinging clainp-arm and the hook for holding it elevated while the load is being drawn up before the car is started. Fig. 6 is an elevation of the tripping-latch that holds the car in line with the yoke.

A shows the track on which the car runs. It may be made of wood or metal, and in the case of hay-hoisting machines it is mounted in the peak of the barn.

B is the yoke or traveler,bcing provided with traction-rollers a a,that run on the track.

0 is the car or carriage, the same being attached to the yoke or traveler by a swivelbolt, 1), which allows the car to be shifted end for end, so as to run in either direction, as will be more fully described.

D is a pulley that turns loosely in the car.

E is the hoisting rope or cable, which passes up over the pulley D, thence horizontally over a stationary pulley, F, over the point where the load is to be dropped, and thence down to the ground, where a horse or other power is attached to it.

G is the fixed bed in the frame of the car, over which the rope passes.

H is aswinging arm, pivoted at c, and provided at its front end with a rack, d, which, when the arm is depressed, engages with a pinion, f, made fast to the side of the pulley D. XVhen the arm is raised, asshown in Fig. 2, the pulley runs free. The armis provided with an enlargement, g, forminga clamp, resting over the bed G. The arm is also provided with a pin, h, which projects out through a slot, i, in the side of the frame of the car. lVhen the car is at restover the load for the purpose of raising the same, the pin it catches into a hook, is, suspended from the track above, and the arm H is held elevated free from pinion f. \Vhen the car starts forward to convey the load,the pin disengages from the hook it and the arm drops, bringing the rack (1 into engagement with the pinion f. The weight of the load drawing upon the rope passing over the pulley causes the latter to draw harder and harder on the arm H and clamp the rope more and more firmly between the two clamps gG. By this means, when the load is once drawn up to the car and the car has started forward on the track, the rope is clamped and held firmly, suspending the load while the car is drawn along on the track to the point of deposit. The heavier the load the more firmly will the rope be clamped. This clamping action is such as to produce no abrasion on the rope, but simply to hold it by a solid grip. The rope is entirely free while the load is being raised, the pinion and rack being then disengaged and the pulley running loose. The hook it may be provided with a spring connecting it with the track in such a Way that the tendency of the spring is to force the hook down into the vertical position and prevent it from swinging or vibrating.

L. L are two latches, pivoted to the yoke B and standing in opposite directions. These latches engage with stops m m on the track when the car is brought into the position for raising the load, thus holding the carin astationary position.

M is a slide in one end of the car 0, which moves freely up and down. Atthelower end is a ring, it, through which the ropeE passes,

and at the upper end is astud or pin, 0, which passes through a hole in the top plate of the car and rests under the head of the latch L that stands on that side. It also has sidelugs or pins, 9, forming guides resting in slots in the side of the car. In elevating the load it rises free till it strikes the ring n, when it ele- Vates, the slide M, forcing the pin out against the end of the latch L and disengaging the opposite end from the stop m, thereby freeing the car, so that it can run on the track, as before described. \Vhen the car is turned around end for end, to run the other way, the same slide answers the purpose, but the other latch L then operates with it.

N is a catch forloeking the car to the yoke or traveler. It consists of a spring attached to the under side of the top plate of the car, and provided at its outer end with a loop or clevis, 0*, through which the rope passes. It also has at its top a stud, s, which passes up through a socket in the top plate and enters a notch in the under side of the yoke, thereby holding the car in line withyoke. The sides of the yoke are made slightly inclined 0r beveling, to allow it to slide over the catch to engage therewith. To shift the car to run in the opposite direction, the procedure is as follows: The team is disengaged, and the rope is drawn from pulley F, and the two ends are brought down so that they hang parallel. Then, by drawing on one end and holding the other, the spring-catch N will be drawn down sufficiently to disengage the catch from the yoke, and then by turning or twisting the ends ofthe rope the car can be turned to the other position, when the catch re-engages on the opposite side. The car can then be run the other way on the track in the same manner, the rope having previously been carried over a pulley, F, on that side. All this work of shifting the car is done below and without mounting a ladder or taking other steps than those described.

In practice, after the load has been elevated and then drawn to the point of deposit, the load is released and dumped by a tripcord, and, the strain being removed, the car, with rope attached, is drawn back to the point of starting, when the swinging arm is again elevated by catching the hook, leaving the rope free to be drawn down and attached to a new load.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a hoisting-machine, the'combination of the yoke or traveler 13, provided with friction-wheels that run on the track or way, the car or carriage O, swiveled by a bolt or pivot to the yoke, so that it can be turned and changed end for end, and the spring-loop N, attached to the upper plate of the carriage, and provided with a stud, s, which strikes into a socket of the yoke to lock the parts together, the whole so arranged, as described, that the stud can be disconnected and the carriage turned end for end on the yoke by bringing the two ends of the rope to the ground, as set forth.

2. In a hoisting-machine, the combination, with the car, of a pulley turning loosely thereon, over which the hoisting-rope passes, a pinion secured to the pulley, a swinging arm provided with a rack that engages with the pinion when the arm is depressed, clamps on the car and the arm, between which the rope passes, and a device for catching and holding the arm in an elevated position while raising the load, as herein set forth.

3. In a hoisting-machine, the combination, with the yoke and car, of latches pivoted to the yoke, standing in opposite directions and engaging with stops on the track to hold the car stationary over the load, and a slide in the car, provided at the bottom with a ring against which the load strikes, when elevated, to operate the slide, and at its top with a pin that rests under the latch on the yoke, as and for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of two subsclzbing witnesses.

B. P. DARLING.

\Vitnesses:

R. F. OSGOOD, WM. J. MoPHERsoN.

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