US1463981A - Brake shoe - Google Patents

Description

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\ /X JAMES S. THOMPSON, Ol? PELHAM, NEW'y YORK, ASSIGNOR T0 THE AMERICAN BRAKE SHOE t FOUNDIRYCOMPANY, OF WIEMINGTON, DELAWARE, A CORPATION ,OF

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.application led September 16, 1922. Serial No. 588,543.

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Be it known thatf, JAMES S. THOMPSON, a citizen of the United States1 residing at Pelham, in the county of llestchester and State of New York, have invented certain new and useful Improvements in Brake Shoes, of which the following is a speciica tion.

This invention relates to. composite shoes of. that type which are provided with chilled sections spaced apart on the Ween' ing face throughout its length. It has been found that in shoes of this kind the chilled sections sometimes crack or brealr away from the body of the shoe in handling and in service owing to the brittle texture of the chilled sections and to the difference between the texture of the chilled sections and the unchilled sections of the body adjacent the chilled sections. This lessens the efli ciency of the shoe and if a considerable chunk of the chilled metal is displaced from the body it is apt to .result in fracture of the shoe and possible accident- It is the object of my invention to over come these objections and to provide a sectionally chilled y. brake shoe in which the chilledand unchilled sections are bonded together by layers of continuous strips of ex panded mild steel or similar tough and 'duce tile material embedded therein, so that the chilled sections are securely anchored in the body and' with the other sections of the body and the tendency ot the chilled sections to crack and break away is materially reduced and the possibility of chunks of the chilled sections becoming displaced from the shoe is entirely avoided, thereby enabling the shoe to be continued' in service without loss of efficiency until worn out.

In the accompanying drawings illustrating selected embodiments ofthe invention Fig. l is a side elevation of one type of driver shoe embodying my invention and. partly shown in. section;

Fig. 2 is a face View of the shoe shown in Fig. l and also partly in section;

Fig. 3 is a transverse sectional View on the line 3-3 of Fig. l; and

Fig. e illustrates another'embodiment of the invention.

I have selected for illustrating the invern tion a type of driver shoe which 'is more or less familiar in the art but it will be ander-V stood that the invention may be embodied in driver shoes of other kinds and also in any car shoe where it may be useful.

Referringv to the drawings, 5 designates the body of the shoe and 6 a plurality of chilled sections atthe ends of the shoe and spaced apart therebetween. Shoes of this type are provided with a centrally disposed attaching lug 7 and usually with some form of reinforcing and strengthening back .8. The chilled sections 6 are reinforced in the body of the shoe and bonded to adjacent unf chilled sections of the body by a plurality of strips 9 of reticulated metal which arel embedded in the shoe and extend approxi mately from end to end thereof. I prefer to employ expanded metal and to arrange the strips' one above the other flatwise to the wearing face of the shoe. Chilled sections may be located at the ends of the shoe and intermediate of these end chills, as shown in lFig. l, or the end chills may be omitted, as

shown in Fig. 4; and any other disposition of the chilled sections may be employed as found desirable to meet different conditions.

The metall strips may be spaced apart slightly, as `shown in the drawings, or they may be arrangedy one upon the other in a more or less compactbundle, if desired, the bundling arrangement having the advantage of facilitating the work of molding the shpe. These metal strips are treated .in a suitable manner to preserve the integrity of the metal during the casting operation and they forni a' strong and substantial reinforcing or bondingmedium extending substantially throughout the length of the shoe and securely bonding the chilled and uncev chilled parts of the shoe together, thereby reinforcing and strengthening the shoe and likewise anchoring each chilled section so that in. event of its breaking the danger arising from chunks breakin away from the shoe is avoided and the shoe is enabled to continue in service regardless of cracks or ently arranged. lf prefer to employ strips made of expanded metal but strips of other reticulated metal may be used il' desired.

I daim:

A.. brake sha@ comwsng a imdj; haw ing a pumlty @f chld sefsons spaced apart @n its Wearing face, and a retic'uaed meta! strip extending substaxialy T0111 end to en of Said body and embedded therein to bond and anchor the Chled'secfons in the body. A v

2. brak'e shoe comprising a nny hawing a plumlity of chilled sections spaced apart cm its wearing fue@ and a pluaizy of retcuae meta strips amending subsanfaly imm Pmi end 0f Sad body and airanged Hawm $0 file Wearing fm1-e of the shoe and embsdded in the body t@ bond and anchm the chilled sections therein.

3, A brake shce comprising @body having a plurality 01": Chiled s ectinls negral therewith and spaced apart Q11 the Wearing face of the shea. and a pfinraty of expand ed metal strips extending substantially o'm end to end of sac body and. arranged one upon the other atwiso. no the wearing 'face of the shoe and embeddd there-in to bond and anchor all of lle chiled sections .in the body.

FAMES S. THOMPSON.,

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