US1867338A - Brake shoe - Google Patents

Description

July 12, 1932. M. N. TRAINER A 1,867,338

BRAKE SHOE Filed May 31. 1930 Patented July 12, 1932 UNITED STATES. "PATENT OFFICE MAURICE N. TRAINER, OF EAST ORANGE, JERSEY, ASSIGNORTO THE AMERICAN BRAKE SHOE AND FOUNDRY COMPANY, OF WILMINGTON, DELAWARE, A

TION OF DELAWARE CORPORA- BRAKE SHOE Application filed May 31, 1930. Serial 1V0. 457,792.

This invention relates to railway brake shoes and more particularly to the attaching lug of a center-fastening shoe.

The object of the invention is primarily to reenforce and strengthen the lug so that it will be better able to withstand the shocks and jars, stresses and strains to which the lug is subjected in handling and in service.

In the accompanying drawing illustrating the invention Fig. 1 is a plan view ofa driver shoe reenforce back embodying the invention.

Fig. 2 is an edge view of the back.

Fig. 3 is a sectional view of a shoe on the line 33 of Fig. 1.

Fig. 4: is a sectional viewof a shoe on the line 44 of Fig. 1.

Fig. 5 is a fragmentary sectional view of the back.

Fig. 6 is a detail perspective view of the lug strap.

Referring to the drawing the reenforce back 7 is embedded in the back of the body 8 of the shoe during the casting operation in the usual manner and it is provided with openings 9 and recesses 10 to receive parts of the cast body to anchor the body to the back. Transversely extending parallel supports 11 are struck up from the back leaving an opening 12. These supports are provided with recesses 13 in their upper edges spaced from their sides. The lug strap 14 is made of a strip of metal bent to shape and having legs 15 which engage the opening 12, and angular feet 16 which engage the under side of the reenforce back 7 to secure the lug strap to the back and to the body of the shoe. Shoulders 17 are provided on the legs to engage the supports 11. In the casting operation the body metal will run through the opening 12 and fill the recesses 13 and part-1y fill the lug strap 14. The invention provides for anchoring the body metal 18 within the lugstrap t0 the supports 11 of the back by seating this metal in the recesses 13 thereby providing a strong, solid and substantial lug construction. The shoulders 17 engage the supports 11 and transmit shocks, jars and blows received by the lug strap through the supports to a sub stantial area of the back without affecting I claim:

the locking engagement of the feet 16 of the lug strap with the reenforce back. The cast iron 18 and-the supports 11 engage the head to which the shoe is attached and reduce wear thereof. V

I have shown the invention in a flanged driver type of brake shoe but it is adapted for use in other shoes and with other reenforce backs and I reserve the right to make any changes that may be necessary or desirable in adapting the invention for different shoes or for other purposes within the scope of the following claims:

1. A brake shoe comprising abody having a reenforce back embedded therein, a lug strap interlocked with the body and the back, supports struck up from the back and having shoulder engagement with the lug strap, there being an opening in the back formed by striking up the supports and said supports having recesses therein, the cast metal forming the body of the shoe projecting through the opening in the back and seated in said recesses and partly filling the lug strap.

2. A brake shoe comprising a body having a reenforce back embedded therein, a lug strap interlocked with the body and the back,

parallel supports extending transversely of the back and struck up therefrom, said supports having recesses in their upper edges spaced from their side edges, shoulders on the lug strap engaging the upper edges of the supports on opposite sides of the recesses therein, there being an opening in'the back formed by striking up the supports, the cast metal forming the body of the shoe projecting through said opening and seated in said recesses and partly filling the lug strap.

MAURICE N. TRAINER.

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