US1202529A - Brake-shoe. - Google Patents

Description

I H. JONES.

BRAKE SHOE.

APPLICATION FILED APR. 28, I9I6.

Patented Oct. 24, 1916.

HARRY JONES, OF SUFFJERN, NEW YORK, ASSKGNOR TO AMERGAN BRAKE. SHGE'L FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, A. CORPRATQIN F NEWT J BRAKE-SHOE.

Specification of Letters Patent. f

Application led Apr128, 1916. Serial No. 94,090.

To all whom it may concern."

Be it known that l, HARRY JONES, a citizen of the United States, and a resident of Suffer-n, in the county of Rockland and Stat/e of New York, have made and invented certain new and useful Improvements in Brake- Shoes, of which the following is a specification.

My invention relates t0 brake shoes, and particularly to that type wherein the serviceable life and wear-resisting properties of the shoe are increased and lengthened by the presence of localized inserts of hard steel, the body of the shoe being reinforced throughout by the presence of openwork ductile metal. rllhis type of shoe, as so constructed, involves several molding operations, and considerable labor in its manufacture, and in addition, the localized inserts of hard steel oftentimes become highly heated in service and the wearing properties of such inserts or sections impaired or destroyed.

It is therefore an object of the present invention to provide a brake shoe having one or more inserts composed of hard wear-resisting steel and openwork ductile metal, the hard steel and ductile metal beingxjoined together in a unitary structure, and preferably in the form of a netting, extending throughout substantially the entire body of the shoe. The ductile metal portion of the insert reinforces and ties together the body Y of the4 shoe, and the uniform and widely distributed character ofthe hard wear-resisting steel, prevents the excessive heating of the shoe at any one point or locality, and provides for the even, uniform and slow wear thereof. By forming the insert of hard wear-resisting steel and of ductile metal, and combining the two in a unitary structure, the requisite frictional and wearresisting properties are obtained, and a shoe in provided which may be economically and easily manufactured, involving but little labor and requiring but one molding opera tion for its production.

A. further object is to provide a brake shoe insert composed of superposed layers of openworlr or expanded metal, held together in a unitary mass by the presence of a coating of hard wear-resisting steel. the hardness of the wear-resisting steel being increased by the chill resulting from depositing it upon the cold ductile metal when in a highly heated condition.

@ther objects and advantages will further appear.

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

Figure l is a view in top plan of a brake slice embodying the characteristic features of my invention, portions of the shoe being broken away and represented in section; Fig. 2 is a fragmental view in perspective of the foregoing; Fig. 3 is a view in side elevation, and partially in section, of my improved brake shoe; Fig. 4C is a view inl end section, of an insert composed of two superposed layers of expanded ductile metal, upon and around which the hard wear-resisting steel is deposited; Fig. 5 is a view in top plan of an insert with portions of the hard steel coating removed from the ductile metal netting.

Referring specifically to the several views, the insert is preferably composed of a bundle of superposed layers of openwork or expanded metal l0, preferably formed of ductile or nielleable steel. A coating of hard wear-resisting steel l1 is formed upon the openwork metal and ties and binds the sev eral layers thereof together, so that the insert is in the form ofa unitary structure, as shown in Figs. 2 and ll, and may be handled and arranged within a brake shoe mold without difficulty, and without the usual assembling and wiring operations fitti necessary to maintain localized inserts and MPU rllhe exact Inumber of layers of expanded l metal l0 may be varied, the insert disclosed in Figs. 2 and 3 being formed of four such layers, the insert disclosed yin Fig. t being composed of two layers, and the insert illustrated in Fig. 5 consisting of but a single layer. The amount of hard wearresisting steel deposited. upon the strands of lll@ the ductile netting' may also' be varied, ty

capable of reinforcing and tying together the shoe body. What- I claim is-:- 1. A brake shoe insert consisting of a netting. of connected and interlaced strands of hard Wear-resisting steel.

2. A brake shoe insert comprising a re-y inforcing member of openwork ductile metal, and a coating of hard steel carried by said reinforcing member.

3. A brake shoe insert comprising layers of openwork ductile metal, and a coating of hard 'steel surrounding the strands of said openwork metal.

4. A brake shoe insert comprising vsuperposed layers of openwork ductile metal, 'and a coating of hard steel surrounding the strands of said openwork metal and tying and binding the layers thereof together.

5. A brake shoe insert comprising a bundle of openwork ductile metal, and a coating of hard vchilled steel upon the strands of said ductile metal.

6. A brake shoe comprising a cast metal body, and a netting of hard steel incor- Work ductile metal, with a coating of hard steel thereon.

9. A brake shoe comprising a cast metal body, a reinforcing member therein formed of a bundle of openwork ductile metal, and a coating of hard steel upon the strands of said openwork ductile metal.

10. A brake shoe comprising a cast metal body, an insert incorporated therein and formed of a bundle of openwork ductile metal, and a coating of hard chilled steel carried by the bundle of openwork ductile metal.

Signed at Sufern, in the county of Rockland and State of New York, this 26th day of April, A. D. 1916.

HARRY JONES.

Witnesses:

CHARLES N. WINTER, WALLACE SUTHERLAND.

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