US108183A - Improvement in combined elevators and conveyers - Google Patents

Description

intimi gisten THOMAS J. POWELL, OF NAPLES, NEW YORK.

Letters Patent' No. 108,183, datedOctober 11, 1870.

IMPROVEMENTJN COMBINED ELEVATORS AND CONVEYERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern Be it known that I, THOMAS J POWELL, of Naples, in the county of Ontario and State of New York, have invented a certain new and useful Improvement in Combined Elevators and Conveyors, of which the following is a specification.

Nature of the Intention.

v 1n general construct-ion, this device is similar to that patented to me May 24, 1870.

The invention consists in the arrangement of t-he sliding pawl, as combined with the other operating parts.

General Description.

Figure 1 is a side elevation.

Figure 2, a section, showingl the operating parts.

Figure 3, a plan ofthe operating parts.

A is the car, running on the wooden way B.

lt has carrying-rollers o a at the top, and sockets b b at the bottom.

In the latter rests a block, (l, which holds the operating parts.

The ends of this block have journals or bearings e c, which allow a free turning action in the sockets, and the sockets are made open at the top, so that the position of the block therein may be changed at pleasure, to adapt the device to run in either direction.

In one end of the block is situated a pulley, E, over which passes the hoisting-rope or chain G, which then extends outward tothe propel' position for attaching the power.

In the opposite end ofthe block is situated a hooklever, D, pivoted in the journal or bearing c, or other part of the block.

At the outer end, it is provided with a reverse hook, lt, and arm I, which act in conjunction with the stop or eye K, the arm striking the stop in advance, and the hook catching it inthe rear, to retain the car in position while the load is being drawn up.

Thus far, the construction the same as in niy patent before alluded to.

Intermediate with the pulley and the lever, above described, is situated a pawl, H, whose arrangement constitutes the essential feature of niy present invention.

lt has lateral bearings or studs d. d ff, which rest in corresponding slots or ways f/ r/ 71 h in the sides of the carryingbloele The slots gare ofi-the forni shown, being of such extent as to allow the necessary forward and backward, as well as up and down, motions of the pawl,

and the slide g' heilig inclined, so that, as the stud strikes it, it draws and directs the pawl properly forward to engage with the chain.

.The rear slots h arc simply made of suliicient extent to allow the forward and back motion.

The forward end ofthe pawl has an edge, p, which engages with the chain, and retains it against -the pulley, to hold the load up.

lt also has a projection, r, against which the stopdisk M on the chain strikes to elevate the pawl.

'lhe rear end is formed, as shown at in, to strike under the end of the lever I), and hold the hook in engagement with the eye K, the said forward end ot the lever being concentric, either in whole or in part, with its pivot, in order to preserve t-ue same posit-ion with the pawl under all circumstances.

The action will be readily understood. As the load rises, the pawl is elevated by the stop-disk M, or other suitable means, thereby drawing it forward, by reason of its studs d d striking upon the ineliucs g' g' of the slots.

This action draws the rear end of ,the pawl from under the front end of the lever D, thereby allowing the same to fall behind the pawl, and releasing the hook 7l, so that the ear can move forward.

The same action that locks the pawl in its forward position causes its edge p to engage with the chain, so that any back action ofthe chain will be taken up and held by the pawl.

In my patent before alluded to, and also in other patents, there are pawls, or'equivalent devices, intended for the same purpose as the above described, but differently arranged, and operating in a different manner.

I claim a novelty in a pawl which simply slides forward and back, the frontend elevating at the same time, in contradiction to a pivoted or turning one, and, in connection with the hook-lever D, it is of special advantage, as it can never fall, to fasten said leverin place, till the hook has absolutely engaged, for the reason that it cannot 'go under the end of the lever till that action has taken place. In the old form there was a liability to a diliicult-y in this respect. Also, in releasing the chain, to allow it to fall, the pawl slides back wit-hout reaction, whereas, in other forms of the pawl, the strain has to be first lift-ed before the pawl can be freed.

It is manifest that this in'l'novcmcnt'can be applied to other forms of the car, or the carrying-block, as well as that covered by my patent alluded to.

The hoisting-chain,` instead of having the load attached directly to its cud, as shown, may be att-ached' to the block or frame, and the load connected with it by a pulley-block resting on ton the chain, and, if dele l sired, a swivel may be connected eitherto the block or frame, or interposed in the chain, to prevent twisting. Also, the hoisting-pulley E may be oogged, if desired, to engage with the end of the pziwl; and furthermore, the hook h may be made to stztnd up, instead of down, in which case the reati' end of' the p21-w1 will strike over instead of' under it. Also, a. spring may be employed, to assist in throwing the pawl back from its forward position.lv The principle, however, will remain the same in any oase. If desired, also, the projection on the under side of the pnwl mary be made crotohed to be more ont of the way of Jthe rope.

lThat I claim and desire to secure by Letters Patent is- The pziwl H, resting loosely in its seat, and having.,rv

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