US1197066A - Brake-shoe. - Google Patents

Description

F. W. SARGENT.

BRAKE SHOE. APPLICA'IIION FILED SEPT. 30. 1915.

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FITZ WILLIAM SARGENT, OF MAI-IWAI-I, NEW JERSEY, ASSIGNOR TO AMERICAN BRAKE SHOE 8c FOUNDRY COMPANY, OF MAI-IWAH, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

Application filed September 30, 1915.

To all whom it may concern:

Be it known that I, Frrz WILLIAM SAR- GENT, a citizen of the United States, and a resident of Mahwah, in the county of Bergen and State of New Jersey, have made and invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification.

This invention relates to brake shoes, and has for its object to provide an attaching lug which is cut or stamped from sheet metal and may be thus economically formed or manufactured, and at the same time it is of such nature that it presents a large area for contact with a brake head, so as to practically eliminate wear between the two.

A further object is to provide an attaching lug which, although embodying but a relatively small amount of metal, is supplemented and reinforced by the cast metal of the body of the shoe, so that it possesses a high degree of rigidity and strength, and is particularly adapted to withstand those strains and forces to which it will be normally subjected during service.

Other objects and advantages will appear as the description proceeds, wherein it is to be understood that changes in the precise embodiment of my invention can be made within the scope of what is claimed without departing from the spirit thereof.

The preferred embodiment of the invention is disclosed in the accompanying drawings, wherein:

Figure 1 is a view in side elevation of a reinforcing back with the attaching lug secured thereto; Fig. 2 is a view in top plan of a brake shoe embodying the characteristic features of my invention, portions of the cast metal thereof being cut away to disclose the manner in which the attaching lug is supplemented and reinforced by the cast metal of the shoe; Fig. 3 is a view in vertical section taken on the line 33 of Fig. 2; Fig. 4 is a plan view of the blank from which the lug is formed; and Fig. 5 is a view in perspective of the finished or completed attaching lug.

Referring specifically to the several views, the lug is made from a blank of sheet metal 10, which, by the action of suitable dies, or other means, is formed with the body portion or rectangular plate 12, and from which project wings 11. These wings are located adjacent the ends of the rectangular plate,

Specification of Letters Patent.

Patented dept. 5, 1916.

Serial No. 53,256. I

and are spaced symmetrically about the transverse center thereof, and project from the plate at slight angles to the transverse axis thereof. The ends of the rectangular plate which protrude beyond the wings 11, form attaching ends 13, which, when bent into engagement with a reinforcing back, securely anchor the attaching lug thereto.

The blank as above outlined, is bent about the dotted lines 14 and 15, and the resulting lug, as illustrated in Fig. 5, includes the top 16, legs 16, and attaching ends 17. The inclination of the wings 11 to the transverse axis of the plate results in their downward and outward convergence, as at 18, this slope corresponding to that portion of the brake head with which these wings are adapted to directly contact. The attaching lug may be utilized with various forms of reinforcing backs, and, as illustrated in Fig. 1, the attaching ends 17 are bent beneath and into contact with the reinforcing back 19, the central portion of which latter is reduced in width and outwardly crimped, to thus prevent the protrusion of the attaching ends beneath the general plane of the reinforcing back and into the body metal of the shoe.

The body metal 22 of the shoe which is cast upon the reinforcing back 19, flows up and between the wings 18, and through the openings 18, with which the sides 16 of the lug are provided. This cast metal portion 23 of the shoe securely anchors the attaching lug in place, and reinforces and strengthens the outstanding wings 18 thereof. The body portion of the lug, extending transversely of the brake shoe back, with the longer axis of any section thereof extending in the direction of the length of the back, renders the lug particularly eflicient in withstanding those stresses and strains to which it will be subjected, and provides for the successful transmission of the end thrusts upon the brake shoe to the brake head. Although the cast metal 23 of the shoe supplements and reinforces the wings 18 of the attaching lug, it is the latter which contacts directly with the brake head, and the smooth and finished surfaces thereof prevent excessive or undue wear of either the lug itself or the brake head.

What I claim is 1. A brake shoe comprising a reinforcing back, an attaching lug including a U-shape body with oppositely extending wings projecting from the edges thereof, and a cast metal body anchored to said back with portions thereof projecting between the wings of said attaching lug.

2. A brake shoe comprising a reinforcing back, an attaching lug secured thereto formed from ductile metal and including a top and sides, wings projecting from opposite edges of said sides and diverging toward their lower extremities, the sides of said lug provided With openings therein, and a cast wearing body anchored upon said reinforcing back with portions of the cast metal extending between said wings and through the openings in the sides of said lug.

Signed at Mahwah in the county of Bergen and State of New Jersey this 25th day of September A. D. 1915.

FITZ WILLIAM SARGENT. Witnesses:

G. T. STUART, J 0s. H. LARSONS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

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