US1034579A - Brake. - Google Patents

Description

A. P BRUSH & W. G, BAKER.

BRAKE.

APPLIOATION FILED SEPT. 17, 1908;

1,034,579, Patented Aug. 6,1912.

UNITED STATES PATENT oriuc.

ALANSON P. BRUSH, OF DETROIT, MICHIGAN, AND WALTER C. BAKER, 01 LAKEWOOD,

' OHIO. s

BRAKE.

Specification of Letters l'atent.

Patented Aug. 6, 1912.

Application filed September 17, 1908. Serial No. 453,421.

To all whom it may concern:

Be it known 'that we, ALANSON P. BRUSH, a citizen of the United States, residing at Detroit, in the county of Wayne and State provide an-improved form of brake which I shall have certainadvantages of construction and operation not possessed by such devices of this class as have been heretofore known to the art.

The invention more particularly is directed to a form of band brake especially adapted for use on automobiles and similar vehicles and comprises features of construction which render it not only strong and easy to assemble, but enable it to operate with equal efficiency for either direction of rotation.

A particular embodiment of our invention is described in the following specification with reference to the accompanying drawings in which:

Figure 1 is a side elevation of our brake brake band to the mounting;

In the construction which we have here shown, the brake comprises a drum A rigidly connected with the vehicle wheel, the drum being-of the conventional cup shape, and having a cylindrical flange A with a friction surface upon the exterior. Mounted upon thefixed axle B aforesaid and rigid therewith, is a bracket Q which has secured thereto a closing plate 0- for said drum- Projecting from the bracket are extensions 0 C having sockets for a pairof studs 'C, C having flanged ends which project laterally across the face of the drum but are spaced apart therefromso as to allow the brake band D to pass beneath them. Thesestuds are also spaced apart from each other soasto allow the ends of the brakeband and the ears or projections D, D secured to the said ends, tolie within the space between the studs and have a slight range or movement there between. An operating crank arm E forming one partof a toggle 1s pivotally secured to the projection upon one end of the brake band, while a link E pivotally mounted at the elbow of the crank arm and pivotally secured to the backet upon the other end of the brake, forms the other partof. the toggle.

Retaining hooks C, C, secured near the edge of the closing plate of the drum extend laterally across the face of the drum and serve to retain the brake band against sidewise displacement. It will thus be seen that the brake band floats loosely within the field fixed by the-two studs C C having flanged ends and the retaining hooks C, C

just described, but that it may be closed.

upon any movement of the crank arm which operates the toggle to draw the ends of the band together.

- Upon the drawing of the brake band down upon the drum the latter will, of course, by reason of the frictional contact, immediately drag the brake band forward in the direction of its rotation, and the fo'rward ear or projection-that is, the ear or projection lying in advance in the direc tion of rotation, will immediately catch against the stud adjacent thereto and be held thereby while the rotating drum will tend to dra the other loose end of the band forward and thuswind it more tightly upon It is to be noted that with the construction which we have devised, it is absolutely im-.

'is' equally efficient no-matter whether the vehlcle be running forward or backward.

It will be observed that the power-applying mechanism, consisting of lever and tog-- gle link pivotally connected-to each other and to the ends. of the brake band, is floating, in the sense that itrequires no other guide or support than its connections with the brake band with which it floats as occasion demands. v

the drum and increase the braking effect.

Thus the ends of the brake s itely disposed shoulders, a fixed member of the frame in axial alinement with the drum, a bracket rigidly attached to said member and having transverse pinsadapted to engage the shoulders on the brake band, retaining hooks fixedly supported, extending outside of and across the band but unattached thereto, said hooks being adapted to retain the band in proper relation to the drum, substantially as described.

2. A brake comprising a drum, a floating brake band lying adjacent to the drum and having ,free ends, oppositely disposed shoulders on the ends of the band, a fixed member of the frame in axial alinement with the drum, a bracket rigidly attached to said member and having transverse pins adapted .to engage the shoulders on the brake band,

a cover plate connected to the bracket, retaining hooks secured to said cover plate and embracing the band. but unattached thereto, with means for applying the band to the drum, substantially as described.

In testimony whereof, we hereunto attix our signatures-in the presence of two Wit- ALANSON P. BRUSH. WALTER c. BAKER.

Witnesses v E. L. THURsToN, H. R. SULLIVAN.

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