US380754A - Joseph haeeis fisher - Google Patents

Description

J. H. FISHER.

AUTOMATIC WAGON BRAKE.

(NoV Model.)

UNITED STATns 'PATENT Ormea.

JOSEPH HARRIS FISHER, OF MERCHANTVILLE, NEYV JERSEY..

AUTOMATIC WAGON=BRAKE- SPECIFICATION forming part of Letters Patent No. 380,754, dated April l0l 1888.

Application led January 21, 1888. Serial No. 261.511. (No model.)

To all whom it 71mg/ concern:

Be it known that I, JOSEPH HARRIS FISHER, a citizen of the United States, residing at Merchantville, in the county of Camden and State of New Jersey, have invented a new and useful ImprovementinAutomaticWagon-Brakes, of which the following is a specification.

My invention relates to an improvement in automatic wagon-brakes; and it consists in the peculiar construction and combination of devices that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a top plan View of the running-gear of a wagon provided with my improved automatic brake. Fig. 2 is a vertical longitudinal sectional View of the same, taken on the line x x of Fig. l.

A represents the rear axle having the wheels B.

O represents the reach having the hounds D, which connect it to the rear axle and to the rear bolster, E.

F represents the front axle and G represents the front wheels.

H represents the hounds of the tongue connected to the front axle, and I represents the front bolster which is connected to the reach and to the front axle by means of the usual kingbolt, K.

L represents the brake-bar, which is guided in keepers M on the rear hounds, and is provided at its extremities with brake blocks or shoes N, adapted to bear against the'peripheries of the rear wheels. The rear bolster, E, is provided with a pair of hook-bolts, O, which extend longitudinally through the same, and have adjusting-nuts l), and the brakebar is provided on its rear side with hooks R.

S represents a pair of coiled retractile springs which have eyes at their extremities, and are connected to the hooks of bolts O and to the hooks R, so as to connect the brake'bar to the rear bolster and keep the said brakehar normally pressed rearward, so that the brake shoes or blocks are applied to the rear wheels.

T represents a vertical shaft or bolt which projects from the upper side or" the reach at a suitable distance in advance ofthe braken bar, and loosely mounted on the saidvert-ical shaft is a large pulley, U, and a small pulley, V, which pulleys are rigidly connected together or formed integrally with each other, and are thereby adapted to rotate simultaneously. The small pulleyVis connected to the brake lever or bar by means of a chain, W.

X represents a whiftletree which is arranged on the front hounds, and is provided on its front side at its center with a metallic strap, Y,which strap has its central portion arranged at right angles to the whifiietree and forming a slotted arm, Z. A vertical bolt, A', passes through the said slotted arm and through a pair of plates, B', which connect the front hounds and form the socket for the rear end of the tongue.

C represents a hammerstrap which is ar ranged on the upper side of the whifiietree, extends forward over the slotted arm thereof, and has its front end connected to the upper end of the bolt A. The rear end of the said hammerstrap is provided with a pair' of eyes, D', which are engaged by links D2, said links being connected at their rear ends to the front hounds.

The usual singletrees are attached to the whifiietree X, and the latter, by reason of its slotted arms Z and the bolt A', is adapted to move backward and forward on the front hounds, as will be readilyunderstood.

E represents a chain which passes through a transverse opening, F, in the front bolster, I, has its front end attached to the whiftleA tree X, and its rear end firmly connected to the periphery of the large pulley U.

G represents a lever which is arranged on the front side of the bolster I, has one end pivoted to said bolster and its opposite end guided in a vertical yoke or keeper, H', and d provided with a chain, I', which passes up through the body of the wagon (not shown) to within easy reach of the driver of the vehicle. The said lever G is arranged belour the opening F.

The operation of my invention is as follows: When the horses are drawing the wagon, the whifiietree is moved forward, so as to tighten the chain E', and thereby partly rotate the pu1- leys U and V, and cause the latter to partly coil the chain lV, and thereby draw the brake'- bar 4forward against the tension of the spring S and remove the brake blocks or shoes from the rear wheels. As soon as the vehicle starts 5 down a hill or grade and its gravity causes it to travel faster than the horses, the traces necessarily become slackened and the springs draw the brake-bar rearward,apply the brakes, cause the chain W to partly turn the pulleys Io U and V, and said pulley U partly winds up the chain E', and thereby draws the whifiletree rearward.

When the vehicle is being drawn on a level road, or when it is desired to back the saine,

I5 the horses are started forward suiciently to release the brakes from the rear wheels, and the driver grasps the chain l and draws upward on the same, so as to raise the lever G and causeit to engage the chain E', and thereby 2o prevent the pulleys U and V from turning and prevent the springs S'from applying the brakes.

Having thus described my invention, I claiml. The combination, in a vehicle-brake, of the brake-bar, the springs to normally move the same rearward and apply the brakes, the longitudinally-movable whifiletree, the revoluble pulleys U V, rigidly connected together,

3o the chain W', connecting one of said pulleys to the brakebar, and the chain E', connecting the other pulley to the whifdetree, subst-antially as described.

2. The combination, in a vehicle-brake, of

the brakebar, the springs to normally move the latter rearward and apply the brakes, the longitudinally-movable whiftletree, the chain E, and connections between said whiflletree and the brake-bar, the bolster I, having the opening F', through which the chain E' passes, and the lever G', pivoted to the front side of the bolster and adapted to be turned so as to clamp the chain E, for the purpose set forth,

substantially as described.

3. In an automatic vehicle-brake, the combination of the brake-bar, the spring to normally move the same rearward and apply the brakes, the longitudinallymovable Whifletree having the slotted arm Z, 'the bolt A', extending through said slotted arm and connecting the same to the front hounds, and connections between the said whiflletree and the brakebar, substantially as described.

4. The combination, in an automatic vehicle-l brake, of the brake-bar guided in keepers M on the rear hounds, the springs to normally move the brake-bar rearward and apply the brakes, the pulleys U V, rigidly connected together and pivoted on the reach, the chain WV, connecting the smaller pulley V to the brakebar, the longitudinally-movable whiffletree, and the chain E', connecting the saine to the larger pulley, substantially as described.'

In testimony that I claim the foregoing as my own I have hereto affixed mysignaturein presA 65 ence of two witnesses.

' JOSEPH HARRIS FISHER.

Witnessesf G. C. MICK, W. B. FISHER.

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