US203495A - Improvement in brake-shoes - Google Patents

Description

H. L. PERRINE.

Brake-Shoe.

No. 203,495. Patented May 7,1378.

Ewen/Z67.

. UNITED STATES PATENT OFFICE.

H. LANSING PERRINE, OF FREEHOLD, NEW JERSEY.

IMPROVEMENT IN BRAKE-SHOES.

Specification forming part of Letters Patent No. 203,495, dated May 7, 1878 application filed March 19, 1878 To all whom it may concern:

Be it known that I, H. LANSING PERRINE, of Freehold, in the county of Monmouth, in the State of New Jersey, have invented certain new and useful Improvements in Metal Brake-Shoes, of which the following is a full,

clear, and exact description.

The object of my invention is to produce simply and cheaply metal brake-shoes.

The invention consists in a brake-shoe formed from rolled bars of steel or iron, and having a tread or face and a web or webs, in which latter one or more notches and bolt-holes aremade, in combination with a cast-metal bed-block or socket having one or more steps registering with the notch or notches in the web of the shoe, and one or more bolt-holes, substantially as hereinafter described.

In the drawings hereunto annexed, Figures 1, 2, 3, and 4 illustrate the various steps in forming brake-shoes from a bar of rolled T metal. Fig. 5 is a perspective view of the preferred form of shoe. Fig. 6 shows the shoe in position upon the wheel, the bed-block being in section to illustrate the notch and lug or step; Fig. 7, a rear view of the shoe and its bed-block and brake-beam; Fig. 8, a sectional side elevation of a bed-block for and with such a shoe as is shown in Fig. 5; Fig. 9, a perspective view of the bed-block; Fig. 10, a rear and partly sectional side elevation of a channel metal shoe with its bed-block or socket.

In carrying out my invention, I roll from the ingot a bar, A, of T shape. The ingot may be of Bessemer steel or other suitable metal.

This bar is, while hot, cut up intolengths suitable for brake-shoes, as indicated by dotted lines, Fig. 1. B, Fig. 2, shows such a shoelength, consisting of a tread or face, B, and web B. These lengths are next subjected to a bending mechanism, as dies in a drop-press or rolls, and thereby given the finished shoe shape, as in 0, Fig. 3. They are next subjected to the action of a punch, which forms the holes a in the web B, for the passage of the bolts, to secure them to their bed blocks or sockets. A notch, b, Fig. 4, may be formed by this punch, and at the same operation, or otherwise. The holes may be drilled or cut by other mechanism than a punch.

The bed-block or socket best adapted for my brakeshoes consists of a casting, E, Fig. 9, having a socket, f, to receive the web B of the shoes, and made with a lug or step, 0, co-

inciding with the notch bin the shoe shank or web, and bolt-holes e registering with the boltholes a in the shoe. These sockets or bedblocks are bolted to the brake-beam F, and the shoes are secured in said sockets by bolts 01 cl, passed through the holes in the two. (See Figs, 6 and 7.)

By making the notch b centrally of the web, and the lug or step c in like position in the casting E, with the fastening-bolts on either side, as in Figs. 6, 7, and 9, or by using a single central bolt d', and notches b, and lugs or steps 0, on either side of it, as in Figs. 8 and 10, I obtain a brake-block in which the thrust or strain in breaking is taken off the bolt or bolts and put upon the bed-block, thus rendering the shoe firmer and more durable.

In Fig. 10 I have shown my invention applied in channel metal. D is the shoe, (in rear view, left-ha'fid figure,) having the groove or channel'g and notches h'h on its sides or flanges. E is the bed-block, having a tongue, is, to enter the groove g, and lugs or steps 6, to enter the notches h.

What I claim is- 1. The brake-shoe described, formed with a tread, B, and a web, B, from a bar of rolled steel or iron, and having a notch or notches, and a bolt-ho1e or bolt-holes made in the web, in combination with a cast-iron socket or bedblock formed with a step or steps and a bolt hole or bolt-holes, substantially as shown and specified.

2. A rolled steel or iron brake-shoe, having the notches b b and bolt-hole a, in combination with a cast-metal socket having steps 0 and bolt-holes, and the bolt 01, substantially as described.

To the above specification of my invention I have signed my name this 14th day of March, 1878.

n. LANSING PERRINE.

Witnesses:

J. A. RUTHERFORD, FLOYD N onRIs.

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