US95448A - Improvement in hoisting-machines - Google Patents

Description

than sans ate-'ni ,y tiiii' WILLIAM EPPELSHEIMER, OF SAN FRANCISCO, CALIEORNIA,ASSIGNOR TO HIMSELF AND EDWARD TRAPP, OF SAME PLAGE.l

Letters Patent No. 95,448, dated October 5, 1869.

IMpRovnMENT IN scisma-MACHINES.

To all whom it may concern:

California, have invented a certain new and improved Hoisting-Machine; and l do hereby declare that the following is a full, clear, and exact description of the same, reference being had tothe accompanying drawm ings, making a part of this specification, ill whichl Figure l is a front view, in part sect-ion;

Figure 2 is an end View; and

Figure 3 is a plan of my de vice.

This invention relates to a new mode of constructing hoisting-machines, whereby greater facility in operating is obtained.

To enable others skilled in thevait to make and use my invention, I will proceed to describe it, as follows:

Referring to iig. l in the drawing, A represents the reel, or Y hoisting-drum, which is made to revolve loosely on the shaft B.

On the outside of the ilange C of this reel will be an internal spur gear-wheel D, which may either be oi' one piece with the reel, or it may bebolted thereto, as convenience may suggest.

On the shaft B, inline with the internal gear D, will "be the driving-pinion E, which will be firmly secured on this shaft, in any ordinary' mechanical way.

There will be two or more counter-pinions, F F, gearing between the driving-pinion E and the internal gear-wheel of the hoisting-reel.

These counter-'pinions will revolve loosely on studs G G, which project from and are secured in the disk,v or brake-wheel H.A Thisbrake-'wheel will revolve loosely on the shaft B, and`will have its outer circumference turned to accommodate the brake-band I, or its equivalent.

The outer circumference of the internal gear-wheel D will also be made to accommodate a brake-band K, or its equivalent. A

There will be set at lsoule convenient point, and running parallel with the shaft B, a brake-shaft L, or it may be that two shafts may be used, one for each brake. 1

These brake-shafts will have provided lon them the small cranks M, to which the ends of the brake-,bands will be attached. l

The` brake-shaft lwill be operated by the lever N, and another lever O (or it may be .a continuation of the lever-N) will be'pmvided, on the end of which the counter-weight P will be secured. A

The .shaft B may be revolved by any suitable means In the drawing, I show a driving-pulley, R, which will be secured to the sha in position, as shown. A belt from/this pulley will connect with the motive-power.'

A suitable trame-work, T, of either wood or iron, will be provided, tosupport and connect the differenty parts together.

The operation of the apparatus, which is convenient and simple, is as follows:

When it is desired to operate in hoisting, the lever N is pressed down, and the brake-band I, being tightened on the brake-wheel-H, at the same' time'the brake-band K is slackened, and freed from the reel brake-wheel. The hoisthig-shaft B is now revolved bythe application of the'motive-power, and the reel will be revolved by the system of gearing.

When it is desired to cease hoisting, the pressure is released from the lever N, when the counter-weight P, coming into action, will fall, and reverse the brakes, slackening the brake-band I, and tightening the brakeband K. Now, because' the axes of the counter-pine ions are not rigidly held, but are permit-ted to revolve around the driving-pinion E, these colnlter-pinions will be inoperative, and, instead of serving to transmit mo`-` tion to the reel, will theniselvesifollow loosely around the internal gear-wheel.

Again, when it is desired to lower or unwind the reel, the brake-lever N isY brought to a middle-posh` tion,as shown in fig. 2. In this position both brakesf will be om and the reel will be permitted to unwind. i

During all of the different operations, the reel-shaft B may be continuously revolving, as it can-operate independently of the reel, or in connection therewith, accordingly as the brakes are set. Y

I do not confine myself to use the particular style of brake herein specified, for other brakes ofcommon construction may be applied. l,

What I claim as my invention, and desire tosecnre by Letters Patent, is- I Y The .system of gearing, as shown, in combination with the brakes and hrake-\vheels, and the shafts and levers connected therewith, -i'or the purpose of 'operating alloisting-reel. -v Y,

vWILLIAM EPPELSHEIMER.

v lWitnesses:

GEORGE PARDY, EDWARD lA. TRAPP.

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