US653951A - Vehicle-brake. - Google Patents

Description

N0. 653.95I. Patented luly l7, I900.

D. D. ELDER. VEHICLE BRAKE.

(Application filed Apr. 28, 1900.)

(No Model.)

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' E, the same being embraced bylips D on the NITE STTES DAVID D. ELDER, OF PHILADELPHIA, PENNSYLVANIA.

VEHICLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 653,951, dated July 17, 1900.

Application filed April 28. 1900.

To all whom it may concern:

Be it known that I, DAVID D. ELDER, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Brakes for Bicycles, Automobiles, or other Vehicles, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of a brake for abicycle, automobile, or other vehicle embodying a shoe which is adapted to be placed in frictional contact with a wheel of the vehicle and engaged with the roadway.

It further consists of novel'means for releasing the brake-shoe of its operative contact with the wheel and roadway.

It further consists of novel details of construction, as will be hereinafter set forth.

Figure 1 represents a top or plan view of a portion of a brake embodying my invention Figs. 2 and 3 represent partial side elevations and partial vertical sections thereof,the members being in different position. Fig. 4 represents a horizontal section on line .r to, Fig. 2, on an enlarged scale. Fig. 5 represents a horizontal section on line y y, Fig. 3, on an enlarged scale. Fig. 6 represents a vertical section on line a a, Fig. 2.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the wheel of a bicycle, automobile, or other vehicle.

B designates a shoe which is of segmental form and adapted to encirclev a portion of the tire or periphery of said wheel.

0 designates a sleeve, which is of segmental form and adapted to encircle a portion of said shoe, it being noticed that said shoe has on its inner sides the projecting rims or beads inner sides of said sleeve, thus preventing improper disconnection of the shoe from the sleeve or loss of place of the shoe on the wheel.

F designates a spring which depends from the frame of the vehicle and has its lower end connnected with the sleeve 0, the tendency of said spring being to force said sleeve in the direction of the arrow 2, Fig. 3.

G designates a treadle, the lower limb of which bears against the back of the sleeve 0,

Serial Ila 14,662. (N0 model.)

as at H, and the upper limb is provided with a foot-piece J, said treadle being properly mounted on the frame of the vehicle.

The operation is as follows, the normal position of the parts being fully understood by reference to Fig. 4, the vehicle running in the direction of the arrow 1: l/Vhen it is desired to apply the brake, the treadle is operated, whereby it presses against the sleeve 0, and thereby forces the shoe B against the tire of the wheel, as in Fig. 5, the shoe slipping through the sleeve, the resultant friction of the shoe with the wheel causing the lowering of the shoe as the wheel revolves and pacing a portion of said shoe on the ground, street, sidewalk, or roadway, as shown in Fig. 3, the motion of said shoe being somewhat resisted bythe friction of the sleeve 0, which with the friction of the shoe on the wheel and the weight of the vehicle imposed upon the shoe in its contact with the roadway will quickly and nicely stop the vehicle. In order to return the sleeve to its normal position, the vehicle is sufficiently backed, when the shoe rises with the wheel, the power of the wheel being sufiicient to overcome the friction of the sleeve. The treadle is let go, and the spring F then forces the sleeve 0 in the present case to the left, carrying with it the ad jacent portion of the shoe, whereby the latter is sufficiently removed from the tire of the wheel to permit the revolution of the wheel without material interference of the shoe and holding the shoe'in inoperative position, as in Fig. 2.

It will be understood that when the brake is put on and the shoe lowered the power of the wheel which carries it down is superior to the holding action of the sleeve which embraces it, the same being true when the shoe is raisedby the wheel in backing.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A vehicle-brake consisting of a shoe adapt ed to encircle a portion of a wheel of the vehicle, a sleeve adapted to freely'engage with said shoe, means for advancing said sleeve and shoe toward the wheel, whereby the shoe friction'ally contacts with the wheel and is carried down upon the roadway, and means for releasing said shoe, whereby it maybe re= too turned to its first position and held inoperative.

2. Inavehicle-brake, abrake-shoe, a sleeve freely embracing the same, a treadle adapted to be pressed against said sleeve for advancing the shoe against the wheel, and a spring connected with said sleeve for returning the same and consequently the shoe from the wheel.

3. In a vehicle-brake, a shoe primarily free from a wheel of the vehicle, a sleeve engaging' said shoe by a slip-joint, and means for forcing said sleeve toward the wheel, placing the shoe in frictional contact with the latter, whereby the shoe follows the wheel.

4. In a vehicle-brake, a shoe primarily held free from a wheel of the vehicle, a sleeve engaging said shoe by a slip-joint, and means for forcing said sleeve from the wheel, holding the shoe practically disengaged from the latter.

5. In a vehicle-brake, a shoe adapted to engage With a wheel of the vehicle and follow the same, and a sleeve embracing said shoe for holding the shoe in inoperative position, said shoe and sleeve being connected by a slip-joint and held together by a projecting rim and lip on the respective parts.

6. A shoe adapted to freely engage a portion of a vehicle-wheel, a piece coupled by a slip-joint with said shoe, means controlling said piece for holding said shoe from the- Wheel, and means for forcing said sleeve and shoe toward the wheel and placing the shoe in frictional contact with the latter, causing its descent by and with said wheel, and when the motion of the wheel is subsequently reversed, the automatic return of said shoe to its first position.

DAVID D. ELDER.

lVitnesses:

JOHN A. WIEDERSHEIM, WM. CANER WIEDERSHEIM.

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