US1182368A - Brake-shoe. - Google Patents

Description

C. HANER. .IR.

BRAKE SHOE.

APPLICATION FILED MAR. 23. I9l6.

1,1 82,368 Iatvnted May 9, 1916.

IIIIIIIIII III I- A I E J INVENTOR Carl Hamel" J5".

STATES PATENT OFFICE.

CARL HANER, JR,, OF SUFFERN, NEW YORK ASSIGNOR TO AMERICAN BRAKE SHOE 6 FOUNDRY COMPANY, OF MAHWAH. NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

Specification of Letters Patentl Patented May 9. 1916;.

Application filed March 23, 1916. Serial No. 86.054.

To all whom it may concern v Be it known that I, CARL Hanna, Jr.. a citizen of the United States, and a resident of Sufi'ern, in the county of Rockland and State of New York, have inade and invented certain new and useful Improvements in Brake-Shoesurf which the following is a specification.

My invention relates to composition filled brake shoes. In this type of shoe it is essential that a large area of composition filling be prdvided, and to this end the body por- 'tioti f the, shoe is constructed in the form of a The side walls of this shell, being ofQliriiited thickness and formed of cast iron, are oftentimes fractured and broken during the forced insertion of the composition filling, or by the bulging and spreading of such filling upon the application of the brake shoe to a car wheel. The fracture or breakage of these side walls, which may also take place during handling, allows the composition filling to become loosened and dislodged from. the shell. The limited thickness of the side walls of the shell is also objectionable, due to its' action when contacting with the tread of a car wheel.

It is therefore an object of the present invention to provide a composition filled shoe Whereinthe cast iron body or shell is reinforced throughout, and the side walls are prevented from becoming fractured and broken, and the composition filling from becoming dislodged. V

A further object is to accomplish the aforementioned ends in a manner such that a composite wearing surface is provided for the thin and narrow side walls of the shell, preventing these side walls from scoring or cutting the tread of a car wheel, or becoming prematurely worn away. I

With these and other objects in view, my invention resides in the combination and arrangement of parts, and in the details of construction, hereinafter described and claimed, and illustrated in their preferred embodiment in the accompanying drawings, wherein I Figure 1 is a view in perspective of the shell or body portion of my improved brake shoe, portions of one of the side walls thereof being broken away; 2 is a top plan View of the foregoing, with a portion thereof im section, illustrating the arrange ment of the reinforcements of ductile metal:

' Fig. 3 is a view in section taken on the line 3-3 of Fig. 2; Fig. l is a view in section similar to the foregoing. of a slightly modr fied form of shoe. the reinforcements of ductile metal in this type of shoe extending entirely across the back. as well as around the side and end walls of the shell; Fig. 5 is a fragmental view in perspective of this latter type of shoe, a portion of the cast iron and one end of the body of the shoe being broken away.

Referring specifically to the several views, my improved brake shoe, is preferably, though not necessarily. formed ,with a steel back 10. to which is cast a body 11. in the form of an open box or shell. The shell is formed with the single compartment 12. whichf extends throughout the length land breadth of the shoe. so as to receive the con tinuous and unitary mass of composition filling the 'ein. In order that the brake shoe will possess the requisite wearing and frictional qualitiesrit is necessary that a large wearing area of composition filling be provided, so that the side and end walls 14 End 15 of the shell must necessarily be made-Jr the shell being formed of cast iron. collectively form composite wearing surfaces, preventing the too rapid wear of the side walls of the shell, or their scoring of the tread of the car wheel. Further, the presence of (13 tile reinforcements prevents the side walls from being broken, either by rough handling, or the occurrence of excessive transverse stresses, such as during the forced insertion and packing of the composition filling, or the subsequent bulging of the filling during the application of the brake shoe to a car wheel.

What I claim is I 1. A shell for composition filled brake shoes comprising a cast metal body with side aiid end walls of limited thickness, a j nd 4. A brake slide comprising a shell formed reinforcements of openwork ductile metal of cast iron, and including side and end.

embodied in the said side walls. walls'of limited, and substantially uniform,

2. A brake shoe shell comprising a thickness throughout, openwork ductile metal body with spaced side and end'wallsof metal reinforcements embodied in said shell 20 J limited-and substantially uniform thickness walls, and a composition filling contained a throughout, and reinforcements of openwithin said shell. work ductile metal incorporated in said side Signed at Sufi'ern, in the county of Rock; 1

walls. land and State of New York this 20th day A brake shoe comprising a shell of March A. D. 1916.

formed of cast iron, With side and end walls CARL HANER; JR

of limited thickness, a reinforcing strip-of i openwork ductile metal embodied in the \Vitnesses:

walls of said shell, and a composition filling HARRY JoNEs,

contained within said shell. R. C. AUGUR.

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