US656047A - Wagon-brake. - Google Patents

Description

Patented Aug. l4, I900.

' H. E. ROLPH. WAGON BRAKE.

(Application filed May 29, 1900.)

(No Model.)

] NVE/V TOR 6E9 wM a his afiornay- WITNESSES.-

" NITED STATES HENBYEROLPH, on ST. PAUL, MINNESOTA.

WAGON -BRAKE.

QPEG IFIGATTON forining part of Letters Patent No. 656,047, dated August 14, 1900 Application filed May 29, 1900.

To all whom it may concern.-

Be it known that I, HENRY E. ROLPH, a citi- Zen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Wagon-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.

The object is to present a simple and efii cient form of wagon-brake in which the same will be automatically brought into operation by pressure applied from the neck-yoke of the tongue, such pressure being proportionate to the back resistance of a team in descending gradesthat is to say, where the grade is slight the pressure will be slight and where the grade is steep the pressure will be proportionately greater.

The invention consists in the novel construction and combination of parts of a wagonbrake, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like letters of reference indicate corresponding parts, I have illustrated a form of embodiment of my invention, it being understood that other forms of embodiment thereof may be employed without departing from the spirit of the same, and in these drawings- Figure 1 is a View in inverted plan showing my improved brake applied to an ordinary farm-wagon. Fig. 2 is a detached view in elevation of the brake-operating rods detached from the brake mechanism, showing the manner in which the parts are arranged. Fig. 3 is a view in end elevation of a part of a wagon, showing the rear axle and one wheel with the mechanism in place on the axle; and Fig. 4 is a detail view in elevation of a friction-plate employed to operate the brakes proper.

Before proceeding with the description of the present invention it is to be understood that the brake mechanism may be applied either to the front or rear wheels of a wagon; but in this instanceit is shown as applied to the rear wheels alone, although it is to be understood that the mechanism may be duplicated Serial No. 18,422. (No model.)

to be applied to the front wheels withoutdeparting from my invention;

Referring to the drawings, A designates the reach, the same connecting the front axle B and the rear axle O, as usual, the reach being adapted to be lengthened or shortened, as will be well understood, and D the tongue, carryingthe ordinary neck-yoke, (not shown,) as usual. Upon the tongue is pivoted a lever E, the upper end of which extends above the tongue and is adapted to be engaged by the neck-yoke, the lower end of the lever ex tending below the tongue, as shown in Fig. 2. Connecting with the lower end of the lever is a three-part brake-operating rod F, two sections whereof, fand f, are preferablyconnected by a link-joint, as shown at f and the third member f having a link connection with the member f the two members f and,

f passing through a nut or collar f carrying a screw or bolt f, by which these two latter members may be held at any desired adjustment. The object of having the members f and f adjustable lengthwise is to compensate for any change that may be made in the length of the reach, as it will be well understood that where such device is employed in connection with lumber-wagons the length of the reach is changed to meet the requirements in the different lengths of lumber carried.

Supported from the rear axle C by hangers or supports 0 is a double crank shaft or rod 0 one crank c of which iscengaged by the member f" of the brake-operating rod F and the other crank c by a friction-plate G, the crank extending through a slot 9 in this plate provided for the purpose, as clearly shown in Fig. 4. The free end of the plate G is pivotally connected with one end of a rod or plate H, the other end of which is pivotally connected with one of the hounds I at the rear portion of the wagon, as shown at e. The wagon is provided with the usual brakebeam J, carrying brake-shoesj, and the plate H is connected with the brake-beam J through the medium of a link or bar K, as clearly shown in Fig. 1.

The operation of the device is as follows: When the wagon is going downhill, the neckyoke will engage with the lever E, thereby moving the latter in the direction of the arrow shown in Fig. 2 and through the brakeoperating rod F rocking the crank-shaft G which will thus bring the friction-plate G into engagement with the hub of the wheel adjacent thereto. The frictional contact between the hub and the plate will cause the lever G to be moved backward, thereby through the medium of the lever H and the connectionK exerting a backward movement upon the brake-beam J, thus causing the brake-shoes to engage the wheels, and thus brake the wagon. Where the decline is moderate, the application of the brakes to the Wheels will be slight; but where the decline is sharp the application of the brakes to the wheels will be proportionately greater, thereby effecting an automatic braking of the wheels corresponding to the backward resistance olfered by the horse in. its attempt to check rapid descent of the wagon.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a wagon-brake, the combination of a lever adapted to be operated by the neck-yoke, a double crank-rod, a connection between the lever and the crank-rod, a f riction-plate opera= tively connected with the rod, and alever connecting the plate and the brake-beam, substantially as described.

2. In a wagon-brake, the combination of a lever adapted to be operated by the neck-yoke, a double crank-rod, anadjustable connection between the lever and the crank-rod, a friction-plate operatively connected with the rod, and a lever connecting the plate and the brake-beam, substantially as described.

In testimony whereof I aifix my signature in the presence of two subscribing witnesses.

HENRY E. ROLPH.

Witnesses:

J. J. LOMEN, CHARLES A. Rosn.

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