US312436A - Vehicle-brake - Google Patents

Description

No Model.)

I. 0. DAY;

VEHICLE BRAKE. No. 312,436. Patented Feb. 17, 1885.

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NITED STATES ATENT ()FFICE.

FRANK DAY, OF SORANTON, PENNSYLVANIA.

VEHICLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 312,436, dated February 17, 1885.

Application filed October l, 18%. (No model To all whont it may concern:

Be it known that I, FRANK 0. DAY, of Scranton,in the county of Laokawanna and State of Pennsylvania, have invented certain Improvements in Brakes for Wagons, Cars, 820., of which the following is a specification.

This invention relates to an improved manner of supporting and operating brake shoes or rubbers, whereby the shoe may be moved directly to and from the face of the wheel and applied thereto in an efficient'manner.

To this end the invention consists, essentially, in pivoting the shoe to the crank arms at the extremities of two parallel rock-shafts, to one of which the power is applied for moving the shoe into and out of an operative posi tion.

My improvement is applicable to carriages, wagons, cars, and other wheeled vehicles in general;

Referring to the accompanying drawings, Figure 1 represents a side elevation of part of a wagon-wheel and so much of the brake mechanism as is necessary to a perfect under standing of my invention. Fig. 2 is a top plan view of the same.

A represents the wheel, and B the shoe or I rubber, the face of which should correspond in of a metal strap, F, as represented in the drawings.

It will be perceived that the arm of the lower shaft is shorter than that of the upper, and that it is attached below the end of the shoe, so that when a forward rotation is imparted to the shaft D the block will be carried forward directly and squarely against the face of the wheel.

i The shaft may be operated by mechanism of any suitable character, the present inven- M tion having no reference thereto.

It will be observed that owing to the position of the rock-shafts they apply the block with increasing force as it is urged against the wheel. it will also be observed that the friction of the wheel, applied in a forward or downward direction, assists in holding the block in contact therewith.

Having thus described my invention, what I claim iS 1. In a wagon-brake, the combination of two parallel rock-shafts having rigid crankarms on their ends and a brake-shoe mounted directly upon said arms, substantially as described and shown. 4

2. In combination with the brake-shoe, the rock-shaft G, having the crank-arm pivoted to the upper end of the shoe, and the rockshal't D, having a relatively shorter arm pivoted to the lower end of the shoe.

In testimony whereof I hereunto set my hand, this 11th day of August, 1884, in the presence of two attesting witnesses.

FRED W. GtiNsTER, F. L. BROWN.

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