US227296A - Vehicle-brake - Google Patents

Description

E. W. PRITGHBTT.

Vehicle-Brake.

No. 227,296. Pate d lvlfay 4,1880.-

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UNITED STATES PATENT OEEieE.

ENOUH W. PRITOHETT, OF CATARACT, INDIANA.

VEHICLES SPECIFICATION forming part of Letters Patent No. 227,296, dated May 4, 1880,

Application filed December 4,1875).

To all whom it may concern Be it known that 1, ENocH W. PRITCHETT, of Cataract, in the county of Owen and State of' Indiana, have invented certain new and useful Improvements in Wagon or 4Vehicle Brakes; and I do hereby declare the following to be a full, clear, and exact description of' the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of' reference marked thereon, which form a part of' this specification.

This invention relates to certain improvements in wagon-brakes for which Letters Patent of the United States were granted to me bearing date the 4th day of' November, 1879, and numbered 221,252.

The present invention has for its object to provide a means for adjusting the brake-levers so as to adapt the same to wheels of different diameters; also, to provide a means for automatically releasing the brake-levers after they have been applied to the wheels, and to hold said levers in a normal position and prevent any rattling of the same.

rIhe invention further has for its object 'ro prevent the back-strap connected with the brake-levers from being affected by the tugstrap when said strap is subjected to a pulling strain, and also to prevent the levers from springing when applied to the brakes, all as more fully hereinafter specified.

To this end my invention consists in the combination, with the brake-levers, of mechanism whereby said levers may be adjusted to adapt the brakes to wheels of' different diameters.

The invention further consists in the combination, with the brake levers, of certain springs whereby said levers are automatically operated to release the brakes and held in normal position against a cushion, of' rubber or other similar material, to prevent noise or rattling; also, in the combination, with the tug-strap, of' a strap secured to the thills, through which the tug-strap is passed, and by means of which it is held away from the backstrap before mentioned; and, finally, in the combination of a guide with the brake-levers for holding said levers and preventing theln from springing` when the brakes are applied, all as more fully hereinafter set forth.

In the drawings, Figure l represents a plan view of' a wagon or other vehicle brake embodying the improvements in my invention. Fig. 2 shows a bottom view of a portion of' my improved brake 5 .and Fig. 3, a side elevation, showing my improvements.

Referring to the drawings, the letter A designates the thills of a wagon or other vehicle, and B the brake-levers, adj ustably fulcrumed in bearings C C, secured to the thills either on the inside or outside of the same, as may prove most convenient. These bearings are formed by anges on a metallic fratrie, which is preferably constructed of' cast metal in one piece, but which may be formed of' wrought metal in one or more pieces, and the parts secured together in Aany convenient manner. The brake-levers set in slots d d in said frames, and the flanges are provided each with a series of apertures, through which the fulcruinpins e e of the brake-levers may be passed to adjust said levers and adapt the brakes to wheels of' different diameters.

The letters D D indicate cushions, of rubber or other equivalent material,'one being attached to the lever and the other secured in the rear end of the slots, for the purpose of' preventing any rattling of' said levers and the noise consequent upon such rattling. rI he cushion D/ may be formed with a V-shaped or other recess at its front edge, in which the leverv may set when in a normal position, in order that it may be better held in place 5 but such construction is not absolutely necessary to effect the purposes of this part of my invention.

The outer ends ofthe levers B B are provided with br'ake-shoes, which, when said levers are operated, come in contact with the tires ofthe front wheels of the vehicle, and are released by mechanism hereinafter explained.

The letter E designates the breech-strap passing around and in contact with the rump of the animal. rI he said breech-strap is connected at each end to a back tug-strap, F, which passes forward over a sheave, Gr, mounted in bearings on the upper side of the thills, and back to the plain ends of the levers B B on the outside of the thills.

The letters H H indicate spiral or other springs secured to the respective levers and to the thills in such manner as to hold said levers in a normal position against the cushions D and prevent rattling, the said springs also serving to return the brake-levers to a normal position and release the brakes automatically after they have been applied.

The letter I indicates a crank-shaft placed lback ofthe cross-bar K of the thills, having a hook, lr, at each end adapted to engage with and retain the plain ends of the levers B B, or to release them at pleasure.

The letter L indicates a strap secured to each thill ot' the vehicle, through which the tug-straps M are passed, and. by which said tug-straps are held away from the back tugstraps, I1, so as not to interfere with the same.

The letter N indicates-a guide secured to theA cross-bar K ofthe thills, and bearing against the brake-le\f'ers at the point of intersection ofthe same, and serving to prevent said levers from springing when the brakes are applied. ln order to deaden the sound consequent upon the movement of said brake-levers a buffer, of rubber or other suitable material, may be applied between said guide and the levers; but this is not essential to the practical operation of my invention.

The operation of my invention will be readily understood in connection with the above description.

Vhen the hooks k 7c are not engaged with the levers B B the backward motion of the animal or the forward motion of the vehicle exerted upon the breechstrap of the animal will cause the brake-shoes at the ends of the levers B B to come in contact with the front wheels and brake them when making a dey l Patent, is-

l. In combination with the thills A of a 4wagon or other vehicle, the brake-levers B,

strap F, the whole adapted to operate sub stantially as andfor the purposes specied.

2. In combination with the brake-levers B B and mechanism for applying the brakes, the adjustable bearings@ C, the buffers located therein, and the spiral springs H H, adapted to hold the brakes against the buffers, substantially as and for the purposes specified.

3. In combination with the brake-levers, the guide attached to the cross-bar K of the vehicle, and bearing against said levers at their intersection, to prevent the springing of said levers when the brakes are applied, substantially as specified.

In testimony that I claim the tcregoing I have hereunto set my hand this 4th day of December, 1879.

ENOGH W. PRI'IGHETT.

Witnesses:

GHAs. L. GooMBs, H. J. ENNIs.

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