US788690A - Brake-shoe. - Google Patents

Description

PATENTED MAY 2, 1905.

H. H. WRIGHT.

BRAKE SHOE.

APPLICATION FILED 00T.19,1904.

Patented May 2, 190 5.

HARRY H. WRIGHT, OF CHICAGO, ILLINOIS.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 788,690, dated May 2, 1905.

Application filed October 19, 1904. Serial No. 229,070.

To a whom it may concern:

Be it known that I, HARRY H. W RIGHT, a citizen of the United States, residing in Ohieago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Brake-Shoes, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention has relation, primarily, to that class of brake-shoe the bodies of which are formed of cast metal reinforced or strengthened by bars of wrought-iron or other tough metal; and the invention consists in the features of improvement hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in theclaims at the end of this specification.

Figure 1 is a plan view of a brake-shoe embodying my invention. Fig. 2 is a view in side elevation. Fig. 3 is a view in vertical cross-section on line 3 3 of Fig. 1. Fig. 4 is a view in vertical cross-section on line 4 4 of Fig. 1.

A designates the body of the brake-shoe and will be formed of cast-iron and of any approved shape. Preferably, although not essentially, the body of the brake-shoe has cast therein suitable inserts B, of chilled iron or other suitable material, these inserts being preferably of dovetail outline to more effectively insure their retention within the body of the shoe.

' formed with the usual eye or hole a.

Along each edge of the brake-shoe, at or adjacent the back thereof, extend the strengthening-bars O and O, of wrought-iron or like strong and tough metal, and preferably the end of the bars O and O terminate at a slight distance inside the ends of the cast-metal body of the shoe and beneath the metal retaininglugs a at the back of the shoe. Preferably the wrought-iron bars O and O are formed at their centers with the outwardly-offset por' tions 0 to receive the outwardly-bent ends of the wrought-metal staple or reinforce D, by which greater strength is given to the attaching-lug A of the shoe, this lug A being The lug A is cast integrally with the body of the shoe A, and the wrought-metal staple or strip 1) is embedded in the lug, so that if the lug should become cracked or broken the wrought- Inetal reinforce staple or strip 1) will prevent the body of the shoe from dropping away from its retaining devices.

As shown, a cast-metal web A extends along one side of the body A of the shoe and is formed in piece therewith, this web A being united by the transverse web a to the castmetal attaching-lug A. The strengtheningbars I and C and the reinforce staple or strip D will be connected with the body of the shoe in the casting operation that is to say, these bars O and O and staple D will be set in the mold, and the cast metal that is to comprise the body of the shoe will be poured around them.

I prefer to locate the strengthening-bars G and C with their side edges coincident with the sides of the body of the shoe, for the reason, first, that in this way the strengtheningbars can be more readily and accurately placed in position in the mold, and, second, because when in this location and with the reinforce staple or strip .1) in place there is still ample room for the metal to flow around the bars C and O and staple D. For like reason also the outwardly-bent ends of the staple or strip I) extend to the outer edges of the bars O and O. the offsets c the outwardly-bent ends of the staple or reinforce-strip D are brought upon a line with the bottom faces of the bars O and C, so that the integrity of the staple D is not effected until the bars O and C are worn.

When the shoe is to be cast, the strength ening-bars O and (1 will be set in position against the drag of the mold with the rein' force staple or strip 1) bearing against the inner faces of the bars O and O, which in turn are positioned by their bearing against the mold. The inserts B are fixed in place in the cope, and the cast metal to form the body A,

the attaching-lug A, and the Web A (if said 9 web be employed) is then poured into the mold and in the casting operation is firmly united to the bars O and O and staple I). In case the cast-nietal body A should become fractured the bars O and C will still serve to hold By forming the bars C and (l with the parts together, and if the east-metal attaching-lug A should become broken the reinforce staple or strip D will serve to prevent the shoe from dropping away from its fastenlng.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. A brakeshoe comprising a cast-metal body, a cast-metal lug formed integral therewith and having metal bars extending along the back of the shoe and a reinforce staple or strip embedded in the cast-metal lug and having its ends bent outwardly and extending ulnder the longitudinal bars at the back of the s we.

2. A brake -shoe comprising a cast metal body, a cast-metal lug formed integral therewith and having metal bars extending along the back of the shoe at its sides and a reinforce 2O staple or strip embedded in the cast-metal lug and having its ends bent outwardly and extending under the longitudinal bars to the outer edges thereof.

3. A brake shoe comprising a cast metal 5 body, a cast-metal lug formed integral therewith and having metal bars extending longitudinally of the shoe, said metal bars being provided With offset portions and a reinforce staple or strip embedded in the cast-metal lug 3

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