US1218668A - Brake-shoe. - Google Patents

Description

H. JONES.

BRAKE sHoE. APPLICATION FILED DEC. 28| |916 Patented Mar. 13, 1917.

A TRNEYS l HARRY JONES, 0F SUFFERN, NEW YORK, `.ASSIGrNOR T0 THE AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF WILMINGTO WARE.

N, DELAWARE, A CORPORATION or' DELA- BRAKE-SHOE. f

Specification of Letters Patent.

Patented Mar. 13, 191'?.

Application led December 28, 1916. Serial No. 139,254.

To all 'whom it may concern:

Be it known that'l, HARRY JONES, a citi- Suffern, in the county of Rockland and State of New York, have made and invented certain new and useful Improvements in Brake-Shoes, of which the following isl a specification.

My invention relates to brake shoes, and particularly to that class or type which are formed with hard metal inserts incorporated in the body of the shoe, presenting a composite wearing face.

The presence of the hard metal inserts lengthens the wearing life of the shoe, and also provides for the desired amount of dressing action upon the wheel tire. `In order to hold these hard metal inserts in place as the body of the shoe is being worn away, it has heretofore been customary to cast or form thehard metal insert upon an openwork reinforcing member, and subsequently place the two in the shoe cavity of a mold and form or cast the body of the shoe therearound. Thisconstruction resultsin a costly and expensive shoe and involves considerable labor and difhculties in its manufacture. A somewhat different method, heretofore used, for securing the inserts in place, was by forming the same as a number of separate blocks andvproviding them with projections extending toward the wearing face of the shoe. `Theseprojections extended through the` openings or mesh in an openwork reinforcing member, tending to hold the separate inserts in place and subsequently aiding in anchoring the inserts in the body of the shoe. In actual practice, however, the inserts in some instances would shift one with respect to the other, preventing the proper iow of cast metal between the adjacent inserts. A further disadvantage to this construction, was that after the body of the shoe andv reinforcing member, which latter was adjacent the wearing face of the shoe, had been wornaway, the inserts would become dislodged and drop from the shoe.

It is therefore an object of the present invention to form a brake shoe wherein the inserts are provided with rearwardly enlarging projections extending toward the back of the shoe, and also projections extending toward `the wearing face thereof. The rearwardlyr extending projections receive the strands of a reinforcing member therebetween, and are rigidly anchored thereto by the cast metal of the body of the shoe which is formed therearound. The inserts are accordingly securely held and anchored in the body of the shoe, and so'maintained as the shoe becomes worn away inr service.

A further object is to provide a brake shoe inforcing members, sothat the inserts are positively held in their proper spaced relation as the cast metal of the body of the shoe is formed therearound, whereby a uniform amount of cast metal extends to each side of the hard metal inserts, aiding in the securement and anchorage of the inserts and providing for the proper wear of the shoe. To this end, the reinforcing members are provided with spaced pockets in which the inserts are positioned, the formation of the pockets being such that an unobstructed passage and space is provided for the'liow of the molten metal above and below the inserts and reinforcing members.

Other objects and advantages will appear as the description proceeds, wherein it is to be understood that changes in the precise embodiment of the invention may be made within the scope of what is claimedwithout departing from the spirit thereof.

The preferred embodiment of Vmy invention is illustrated in the accompanying drawings, wherein: l

Figure l is a top plan View of my improved brake shoe, portions of the body being broken away, disclosing the internal arrangement of inserts and openwork rein- Referring specifically to the several views, for the purposes of illustration, I have shown a driver shoe consisting of the body 10, back 11 and flange 12. Located within the body of the shoe, are the hard metal Y jections lei are sharply beveled or tapered y toward. their extremities, defining downwardly enlarging or dove-tailed openings 17 between the adjacent projections npon the inner face of the insert. An openworl; metal reinforcing` member 18 is provided and is positioned with the strands thereof j contained within the dove-tailed openings of the several inserts, being so assembled prior to the casting of the body of the shoe therearound. The cast metal ofthe body of the shoe extends within the openings or spaces 17l between adjacent projections 14:, and anchors each and every insert to the reinforcing: member and prevents them from becoming detached from the shoe asthe body thereof and the greater portion of the inserts are worn away in service. In order to further strengthen the body of the shoe and to maintain the inserts in spaced position prior to the forming of the cast metal of the body of the shoe therearound, the lower or outer openworlr metal reinforcing member 19 is provided, and receives the outer projections l5 of the inserts therethrough.

ln order to prevent the inserts from shifting or moving about as the body of the shoe is being cast, l have provided the form of construction illustrated in Fig. Ll, wherein the openwork metal' reinforcing members 2 0 and 21 are provided at spaced intervals with confronting depressions or flutes 22, between whichthe hard metal inserts 211iv are seated. lThe inwardly and outwardly extending'- projections 25 and 26 extend through the openings in the reinforcing members'and are anchored thereto at the time of casting therbody'of the shoe therearound. The confronting 'depressions or flutes 22 form channels and passageways for the molten metal, insuring a flawless casting.

What I claim is 1. A brake shoe consisting of a cast metal body, an insert incorporated therein and provided with projections extending inwardly away. from the wearing face of the shoe, and an openwork metal reinforcing member with the strands thereof extending between the said projections and anchored thereto by the cast metal of the body of the shoe.

2. A brake shoe consisting of a cast metal body, an insert incorporated therein and provided with projections extending inwardly away from the wearing faceof the shoe, said projections defining dove-tailed openings therebetween, and a reinforcing member of openwork metal extending throughout the body of said shoe, with the strands thereof extendingthrough saidl dove.-

tailed openings and anchored to said insert.

3. A brake shoe consisting of a cast metal body, an openworkv metal reinforcing member adjacent the back thereof, and a hard metal insert incorporated in the body of said shoe and provided with projections extending inwardly away from the wearing face of said shoe, said projectionsenlarging towardtheir outer extremities and receiving the strands of the-reinforcing member therebetween-and anchored thereto.

Ll. A brake shoe consisting of a cast metal body, a plurality of hard metal inserts incorporated in said body and providedv with projections extending inwardly away from the wearing face ofthe shoe', said projections enlarging toward their free extremities, areinforcing member of openworkductile metal extending throughout the body of said, shoe andreceiving the said projections between the strandsthereof to-whichv the said projections are anchored.

5. Av brake shoe consisting of a cast metal body, a hard metal insert incorporated therein and provided with projections extending toward the wearing face of said shoe' andv with projections extending away from the` wearing face of said shoe, and spaced rein-V forcing members of openwork metal incorporated in the body of said shoe, receiving;` the projections of said inserts between theV strands thereof, the cast metal of the body of the shoe anchoring the strands of the reinforcing members to the projections of thesaid insert. u

6. A brake shoe consistingl of a cast metal body, Van insert incorporated therein andv provided with inwardly and outwardly extending projections, said insert and pro-jections tapered or beveled toward the wear-I ing face of the shoe, spaced reinforcing; members of openwork duetile metal receiving said insert therebetween, with' thel projections thereof extending between the strandsof the reinforcing members, the cast metal of the body of the shoe anchoring the strands of the reinforcing members to the projections of the said insert. Y

717A brake shoe consisting of aplurality of spaced inserts, spaced openwork reinforcing members receivingfsaid inserts there-- between, said reinforcing members provided`

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