US137922A - Improvement in driving-gears for hand-cars - Google Patents

Description

l. D. HINCKLEY.

Driving Gear for Hand-Cars.

No. 137,922. PatentedApriHsnas,

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Iran STATES JAMES D. HINCKLEY, 0F ADRIAN, MICHIGAN.

IMPROVEMENT IN DRlVlNGi-GEARS FR HAND-CARS.

Specification forming part of Letters Patent No. 137,922, dated April l5, 1873; application filed November 13, 1872.

To all whom it may concern:

Be it known that I, JAMES, D. HINGKLEY, of Adrian, in the county of Lenawee and State lof Michigan, have invented a new 'and useful Improvement in Driving-Gear for Hand-Cars, 85e.; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked there- 0n and being a part of this specitcatio'n, in which- Figure 1 is a perspective view of. a handcar fitted with my improved drivin g-gear, with parts broken away to show its arrangement and Fig. 2 is an inverted perspective view ot part ofthe bottom of the car, showing the application of my double-cranked gear.

Like letters refer to like parts in each figure.

The nature of this invention relates to the application of two reverted cranks to a single spur gear or pulley in such a manner as to have the same effect as if the said gear were mounted on the shaft of a two-throw crank between the cranks, thereby enabling me to couple the pitmen-rods to the crank-wrists close to the gear, and to render the device much less expensive to constructthan a twothrow crank. The invention consists in the peculiar construction and application of two reverted cranks to a spur gear or pulley for operating hand-cars, foot-lathes, or other machines in the manner more fully hereinafter set forth.

In the drawing, A represents the deckfranie of a hand-car, under which the axles B are journaled, the former being the drivingaxle, carrying at,` its middle a pinion, a. G. C are two reverted single cranks, whose wristpins are secured to opposite faces of a spurgear, I), ninety degrees apart, while theaxis of their journals is in line with the axis of the gear. The journals of the cranks rotate in bearings b b bolted to the center-sillsof the deck-frame, and the spurgear meshes with the pinion a 0f the driving-shaft. E 1s an ordinary gallows-frame erected on the deck-frame of the car, on top of which a rock-shaft, F, is journaled in bearings c, and to it is keyed a brake-lever, G. A shorter lever, G', has an eye in its inner end which is sleeved on the rock-shaft. To the short arm of the lever G is pivoted a pitinan, H, whose lower end is strapped to the wrist of the crank O. To the lever G is pivoted a pitmamH, at the same distance from the fulcrum (the rock-shaft) as the other pitman. The lower end of this pitman is strapped to the wrist of the crank C. rIhe levers are provided with the usual brakes, by which the car may be driven.

The reciprocation, or, rather, the oscillation, of the levers rotates the drivinggear precisely in the saine manner as if the pitmen-rods were connected to quarter-cranks in a twothrow crank-shaft, with greater steadiness, however, and less lateral strain, as the power may be said to be applied directly to the gear inst'cad of at a distance from it. Besides this, a gear or pulley cannot be mounted on a shaft having two-throw cranks formed in it between the cranks without making the gear or pulley i111 liialves and bolting them together on the s ia t.

The saine gearing may be employed advan` Witnesses:

C. B. JOHNSON, S. M. BABcooK.

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