US475376A

US475376A - John f

Info

Publication number: US475376A
Authority: US
Publication date: 1892-05-24
Anticipated expiration: 1909-05-24

Description

(No Model.)

J. F. APPLEBY.

WINCH.

No. 475,376. Patnted May 24,'1892.

me cams wenns co., fumo-wma. msnmnfon, n. c.

NtTED STATES PATENT OFFICE..

JOHN F. APPLEBY, OF CHICAGO, ILLINOIS, ASSIGNOR TO W'ILLIAM DEERING it COMPANY, OF SAME PLACE.

WINCH.

SPECIFICATION forming part of Letters Patent No. 475,376, dated May 24, 1892.

Application led March 14, 1892,

To @ZZ whom t may concern,.-

Be it known that I, JOHN F. APPLEBY, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vinches, of which the following is a full description, reference being had to the accompanying drawings, in which- Figures l to 4 are side elevations, and Fig. 5 a sectional plan of the parts as if out on the line 5 5 of Fig. 4.

The principal object of my invention is to provide a raising and lowering device for harvesting-machines and for other purposes to which it may be applicable. I locate my winch, when used on a harvester, in aposition adjacent to the drivers seat,which will be seen by reference to my application for improvements in self-binding harvesters tiled simultaneously herewith.

In the drawings, A is the base, having the lugs a and a. Through these lugs pass the shaft B, that is to be rotated in one direct-ion to take up the chain b wound around it and in the other direction to let the chain out. Upon the shaft B as an axis I support the lever-socket C, and so slot it out as to provide space for a ratchet-wheelD and the pawl-controlling plate E. The said ratchet-wheel is firmly secured to the shaft, and the pawl-controlling plate is loosely applied to the shaft. Upon the outer side of the controlling-plate E are bosses e and e', and between these vibrates one of the side portions of the slotted lever. The bosses e and e are placed somewhat farther apart than the width of the part of the lever which plays between them, so that considerable lost motion is provided for. On

' the periphery of the pawl-guiding plate are the cam-shaped projections c2 and e3 and also the cam-like projections e4 and e5.

F is a spring-held pawl pivoted to the lever, and G is a spring-held pawl pivoted to the base-plate. These pawls are adapted at their free ends to engage the teeth of the ratchet. The pawl F has a sideward projection f, adapted to engage and be operated upon by the camshaped projections e3 and e4 of plate E. The latch G has a projection g, adapted to be engaged by the cam-shaped part e2 of plate E. Into the handle-socket I secure a lever, as partly shown.

Serial No. 424,934. (No model.)

Bearing in mind that the stress of the lifting-chain is always such as to tend to rotate the ratchet-wheel in the direction indicated by the arrow in Fig. l the operation of my device will be readily understood. Let it be rst understood, however, that the action of the lever to-raise the weight depends upon a short stroke and the action to lower the weight depends only upon a long stroke of the 6o lever, and that the pawl-controlling plate E has sufficient freedom of movement to allow the lever to move a short distance without controlling the pawls. Starting with the parts as in the position shown in Fig. l, it will be readily understood that if the lever be moved downward the pawl F will be permitted to engage a notch in the ratchet-wheel lower than the one it is shown in.` When the part freaches the part e4 of plate E, the said plate E will 7o move With the lever far enough to permit the pawl to enter the newnotch. The lever raised, the ratchet Willbe turned and the spring-pawl Gwill be forced to enter aproper notch on the ratchet-wheel and prevent retrograde motion. This operation may be repeated indefinitely.

If now it be desired to lower the weight, the lever will be carried to a high position-as, for instance, that shown in Fig. 3. So carried, the part f will have engaged the part e3 8o of the controlling-disk and moved it in the sa me direction until the cam-like part e2, eugaging the part g, will have forced the pawl G out of the notch it had entered to hold. The lever then lowered, the ratchet -wheel will S5 move in a direction to let the weight down. After the lever has permitted the ratchetwheel to turn so far that the tooth that was held by the pawl G has passed the point of engagement the side of the lever strikes the 9c stud e and forces the controlling-plate so far that the cam-like part e2 shall not hold the pawl G out of contact, and the spring will force the latter to engage the new notch that has been brought down. While thelever was passing downward the ratchet-wheel followed its motion until the pawl G had stopped the rotation. The plate E is prevented from a downward movement to too great an extent by its lug e striking the side piece of the le- Ioo ver. With the pawl in the position forholding, as shown in Fig. l, the further downward movement of the lever causes the cam-like part e4 to passunder'the pawl F and-force it upward to the position shown in Fig. 4. The lever may next be raised to take a new hold, and as the pressure of the spring is sufficient to force the'pawl F'against the controllingplate E suhciently to carry the latter with;

the pawl, the said pawl is held from becoming engaged with the ratchets until the lever is carried so high that the cam-like part e2 strikes under the projecting part gof the pawlG sufficiently forcibly to prevent it moving any farther, when the pawl F, passing on, drops behind it and entersa new notch onfthe ratchetwheel. A slightly-forward movement, how-A ever, overcomes the pressure of the springheld pawl G upon the plateand carries it to the unlatching position, as shown in Fig. 3. The lever may again belowered and the op` eration repeated. i What I claim as my inventiman'd desire to secure by Letters Patent, is-

1. The combination of the 'ratchet-Wheel',

the pawl-controlling plate, the stationary pawl G, and the pawl F on the lifting-lever, subz5 stantially as described.

2. The combination of the base-plate having the lugs a and a', the shaftB, journaled therein andbhavinglsecured theretothe ratch- `etvvheel ID, the pawl controlling plate E,

3o loosely supported upon the said shaft, the 1ever having the pawl F, and the stationary pawl iGr, `all arranged substantially as described.

3. The slotted lever loosely pivoted on the shaft B, the ratchet D and paWl-coutrolling 35 plate located within said slot, the said ratchet- `wheel firmly secu red to the said shaft and the `pawl-controlling plate loosely pivoted to said shaft, the stationarypawl G, and the pawl F, mounted on the Said'lever, all arranged and conibined substantially as described.

Y J OI-IN F. APPLEBY YWitnesses:

F."W.QMAKINNEY, M. A. WHITTLE.