US711920A - Hand-car. - Google Patents

Description

Patqnted Oct. 2|, I902.

No. 7ll,920.

J. BRIDGES.

HAND GAR.

- (Application filed Fab. 15I 1902.) (No Model.) 2 Sheets-Sheet I.

Witnesses Patented Oct. 2|, I902.

No. 7|l,920.

J. BRIDGES.

HAND CAR. (Application filed Feb. 15. 1902.)

2 Sheets-Sheet 2.

(No Model.)

IIH

5] nvantoz Witmeooaa v I UNITED STATES ATENT JOHN BRIDGES, OF IMBODEN, ARKANSAS, ASSIGNOR OF ONE-HALF TO JAMES \VILLIS HUFSTEDLER, OF IMBODEN, ARKANSAS.

HAN D--CAR.

SPECIFICATION formingpart of Letters Patent No. 711,920, dated October 21, 1902.

7 Application filed February 15, 1902. Serial No. 94,187. (No model) To all whom it may concern.-

Be it known that I, JOHN BRIDGES, a citizen of the United States, residing at Imboden, in the county of Lawrence, State of Arkansas,

have invented certain new and useful Improvements in Hand-Oars; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to hand-cars; and it has for its object to provide a simple and efficient construction which includes an energizing-spring having a leverfor winding it and connected with a winding-shaft and a drum, so that when the spring is wound up by operation of the lever the drum will be rotated to drive the apparatus. "When desired, the energy of the spring may be shifted from the driving-wheels to the brake mechanism for setting the latter.

In the drawings, in which like numerals of reference indicate similar parts in the several views, Figure 1 is a side elevation showing the hand-car and its propelling mechanism. Fig.2 is a vertical section taken in the plane of the driven axle of the car and showing the driving mechanism in elevation. Fig. 3 is a section on the line 3 3 of Fig. 1 and showing the brake mechanism. Fig. 4 is a vertical section through the upper portion of the mechanism and including a spring-drum, the shaft of the drum being in elevation.

Referring now to the drawings, the handcar includes a platform comprising outside sills 5 and 6, inside sills 7 and 8, and front and rear cross-pieces 9 and 10, the sills having bearings in which is received the driveaxle 11, carrying the traction-wheel, and the axle 12, which carries the brake-wheels. To rotate the drive-axle, a framework is provided upon the car and consists of uprights 13, having blocks 14 at their upper end disposed longitudinally of the car and having cross-braces 15. The blocks 14: have bearing's 16, in which is received a winding-shaft 17, on which is loosely mounted a drum 18, having a ratchet-wheel at one end and to which drum is attached the inner end of a spiral spring 19, the outer end of which is attached t0 the casing 21, which is mounted casing.

loosely upon the shaft and has a sprocketpulley 22 at one end and exteriorly of the Thus if the spring. be wound up the casing will be rotated to rotate the pulley. To rotate the winding-shaft and therewith the drum to wind up the spring contained therein, a bifurcated lever 2a is disposed with its ends pivotally mounted upon the winding-shaft and at opposite sides of the ratchetwheel thereon, this lever having a springpawl 25 engaged with the ratchet, so that as the lever is rocked upon the winding-shaft of the pivot the'ratchet will be urged in one direction -to wind up the spring. To prevent return rotation of the winding-shaft, a ratchet 28 is fixed thereon and with which cooperates a pawl 29, pivoted to the supportingblocks 14.

From the sprocket-pulley on the windingshaft there leads a sprocket-chain 28 to a sprocket-pulley 29 on a counter-shaft 30, which is journaled in hearings on the sills 7 and S. The counter-shaft carries a large sprocket-pulley wheel 31, with which is engaged a chain 32, leading to a sprocket-pulley 33 on the drive-axle. This sprocket-pulley 33 has a clutch-face 34 at one end, which coopcrates with a similar face 35 of a clutch-drum 36, which is fixed on the drive-axle. The sprocket-pulley is mounted slidably and rotatably on the drive-axle and is held with its clutch-face in engagement with the face of the drum by means of a helical spring 37, disposed upon the shaft and between the ends of the sprocket-pulley and a stop 38 on the shaft. As the spiral spring unwinds it operates the counter-shafts and therewith the sprocket-pulley 3 t in a direction to engage the clutch-faces and to drive the drive-axle. If the sprocket-pulley on the drive-axle be held stationary, however, or against rotation, the spring that is disposed against it will yield and the clutch-faces will have a ratchet action with respect to each other, so that the drive-axle will rotate freely. This action takes place when coasting.

The brake-wheels above referred to are provided with a brake mechanism consisting of levers 4.0 and 41, which are pivoted to the sills 5 and 6 and which are provided at their outer ends with the shoes 42 and 43 for engagement the lever.

with the wheels, and the levers are held normallywith the shoes in operative positions by means of the helical spring 45, which is connected with the inner ends of the lovers and with the cross-piece 10, as shown. To move the levers 40 and 41 to apply the brakes, a shaft'48 is mounted in the sills 7 and 8 and is provided with winding-dru ms 49,with which are engaged the straps 50, attached to the ends of the levers 40 and 41, so that when the winding-drums are rotated the straps will be wound 11p to move the lever and apply the brake. To rotate this shaft,it is provided with a sprocketpulley 50, with which is engaged a sprocketchain 51, leading to a sprocket wheel or pulley 52 on the counter-shaft, and which sprocketpulley is slidably mounted for movement into and out of frictional engagement with the face of the sprocket-pulley 3i, and when in frictional engagement it is rotated by this sprocket-pulley to rotate the winding-drums. To move the sprocket-pulley into and out of engagement with the sprocket-pulley 31, it is provided with a peripheral groove, in which are engaged the legs of a bifurcated lever 54, which is pivoted to the inner face of the sill S and extends upwardly and above the winding-shaft. The upper portion of the lever 54 has a slot in it, through which is passed a rack 55, engaged with the block 14, and with which rack cooperates a pawl 56, pivoted to A trigger 57 is likewise pivoted to the lever and has a link 58 connecting it with a pawl to raise the latter from the rack, the trigger being held in position to engage the pawl with the rack by means of a helical spring 58, disposed between the trigger and the lever. This pawl holds the lever with the shiftable sprocket-pulley on the counter-shaft in frictional engagement with the sprocketpulley 31.

With this construction it will be seen that with the lever 54 thrown to one side, so as to release the brake mechanism, the lever 24 may be rotated to wind the spring, which in turn will operate the drive-shaft in the manner above described, and if the lever 54 be then shifted to an opposite position the brakes will be applied to stop the car.

In practice modifications of the specific construction shown may be made and any suitable materials and proportions may be used for the several parts without departing from the spirit of the invention.

With this construction it will be seen that the mechanism may be condensed, so that it will occupy a small space, thus giving more room for the passengers and tools to be conveyed. Furthermore, with the present construction danger to the passengers is reduced to a minimum.

What is claimed is- 1. A device of the class described comprising a drive-axle having drive-wheels, a second axle having brake-wheels, a spring-operated pulley, a counter-shaft operatively connected with the pulley, aclutch-drum on the drive-axle, a pulley on the drive-axle operatively connected with the clutch for moving the drum in one direction, a pulley upon the counter-shaft connected with the pulley on the drive-axle, a brake mechanism and means for throwing said brake mechanism into and out of operative relation with the pulley on the counter-shaft.

2. A hand-car comprising a platform having a drive-axle provided with wheels and a brake-axle provided with wheels, levers having shoes for engagement with the brakewheel, winding-drums, connections between the brake-levers and the winding-drums for operating the levers, a counter-shaft, a clutch mechanism operatively connected with the counter-shaft for rotating the drive-axle in one direction, and a clutch operatively connected with the winding-drums and having means for operatively connecting it with the counter-shaft.

3. A hand-car comprising a platform including sills and cross-pieces, a winding-shaft having means for rotating it, a spiral spring connected at one end of the shaft, a drivepulley connected with the opposite end of the spring for rotation thereby, a counter-shaft operatively connected with the drive-pulley, a drive-axle having a clutch member, a pulley mounted loosely upon a drive-axle and having a clutch-face, means for holding the pulley with the clutch-face yieldably in engagement with the clutch member, levers having brake-shoes,brake-wheels for engagement by the shoes, means for holding the shoes yieldably out of engagement with the wheels, a shaft provided with winding-drums, straps attached to the levers and to the drums to be wound upon the latter, and means for clutching the drum-shaft in operative relation to the counter-shaft.

In testimony whereof I hereunto sign my name in the presence of two subscribing witnesses.

JOHN BRIDGES.

Witnesses:

JNo. H. DAVIDSON, G. E. LEWIS.

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