US1112377A - Reinforced brake-shoe. - Google Patents

Description

J. J. MORSE.

REINFORCED BRAKE SHOE.

APPLICATION FILED JULY 21, 1912.

1,1 12,377, Patented Sept. 29, I914.

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JOHN JTIVIORSE, OF ST. LO IlIS, MISSOURI.

REINFORCED BRAKE-SHOE Specification of Letters Patent. Patented Sept. 29, 1914' Original application filed August 19, 1912, Serial No. 715,707. Divided and this application filed July 21,

1913. Serial No.780,131.

To all whom it may concern:

Be it known that 1, JOHN J. Monsn, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Reinforced Brake-Shoes, of which the following is a specification.

This application is a division and con tinuation of one filed by me August 19, 1912, Serial No. 715,707 which resulted in Patent No. 1,095,019, dated April 28, 1914:.

This invention relates to new and useful improvements in brake-shoes, and has for its object to provide a brake-shoe which is composed of relatively hard and soft metals in order to obtain increased frictional and wearing qualities and at the same time to increase the strength and longevity of the brake-shoe. p

In the accompanying drawings forming part of this specification, in which like numbers of reference denote like parts wherever they occur,

Figure 1 is a transverse sectional view of a reinforced brake-shoe embodying the present invention; Fig. 2 is a side elevation of the reinforcing element; and Fig. 3 is a face view of same.

The brake-shoe 1 is preferably formed of cast-iron and is reinforced by a plate 2 of wrought, ductile, or other tough metal, which plate is preferably located near the back of the brake-shoe and is arcuated similarly to the back of the latter. Said plate is preferably provided with perforations 3 so that the cast metal fills same and thereby holds the plate firmly in the body of the brakeshoe. Adjacent to the ends of the brakeshoe 1, the plate 2 is bent at the points 4: so that the end portions 5 thereof extend toward the wearing face of the brake-shoe. The plate 2 is provided with a relatively wide extension or tongue 6 or a plurality of such extensions or tongues. For the purpose of illustration, a plate having a pair of extensions 6 is depicted in the drawings, which extensions project from one side of said plate and extend diagonally through the body of the brake-shoe toward the wearing face of the latter adjacent to the other side of the brake-shoe, being, also, provided with perforations 3, so that the cast-metal will run into and fill said perforations, whereby the extensions 6 will be held firmly in place in the cast-metal and together with the cast-metal will increase the frictional qualities of the wearing part of the brakeshoe. It should be understood that the plate 2 may be provided with only one extension 6, if so desired, and, furthermore, that when the plate 2 is provided with more than one extension 6 all of the extensions may project from one side of the plate 2, or, if desired, each side of said plate may hear an extension 6 or a plurality of such extensions.

The brake-shoe may be provided with the usual key lug 7 having the usual opening 8 therein or with a plurality of such key lugs,

which lug or lugs may or may not be reinforced,

It will be evident that the wrought or ductile reinforcing plate not only increases the strength of the brake-shoe, but the presence of its end portions 5 and extension or extensions 6 in the wearing part of the brake-shoe enhances its braking qualities and thereby increases the longevity of the brake-shoe. By reason of using a plate having perforated end portions 5 and extension or extensions 6 as hereinabove described, the disposition and area of the wrought or ductile metal with relation to the cast metal in the wearing part of the brake-shoe change constantly as the braking face of the brakeshoe wears away in use, and in this way prevents the braking face of the brake-shoe from wearing the tread of the wheel unevenly.

One of the great advantages in the construction of the reinforced brake-shoe of the present invention resides in the use of a back plate having itsends and other parts thereof bent, so that same not only may extend into and form part of the wearing face of the brake-shoe, but may take the place of the inserts ordinarily used. In this way the plate at or adjacent to the back of the brakeshoe is combined with the parts of same that may take the place of-inserts in the wearing part of the brake-shoe, the result being the provision of a stronger and more efiicient brake-shoe.

I claim:

1. A reinforced brake-shoe composed of cast-metal and having a plate of ductile metal located adjacent to the back thereof, said plate having an extension which projects transversely from one of the longitudinal sides thereof into the wearing part of the brake-shoe.

2. A reinforced brake-shoe composed of cast-metal and having a plate of ductile metal located adjacent to the back thereof, said plate having a plurality of extensions which project transversely from a longitudinal side of same into the wearing part ofthe brake-shoe.

3. A reinforced brake-shoe composed of cast-metal and having a perforated plate of ductile metal located adjacent to the back thereof, the end portions of said plate being bent inwardly adjacent to the ends of the brake-shoe so as to extend into the wearing part of the brake-shoe, and a perforated extension projecting from a side of said plate into the wearing part of the brake-shoe.

l. A reinforced brakeshoe composed of cast-metal and havinga perforated Jlate of ductile metal located adjacent to the ack thereof, the end portions of said plate being bent inwardly adjacent tothe ends of the brake-shoe so as to extend into the wearing part of the brake-shoe, and a plurality of perforated extensions projecting from a side of said plate into the wearing part of the brake-shoe. v

5. A. reinforced brake-shoe having a perforated plate located adjacent to the back thereof and having parts of same adjacent to the marginal edges of the longitudinal sides thereof bent inwardly so that each of the parts extends from side to side of the shoe and into the wearing face of the shoe.

6. A reinforced brake-shoe having a plate ing a perforated side extension which is disposed transversely of the plate and extends in a substantially straight line from the side of the plate to which the extension is connected to points alined with the opposite side of the plate and at an incline to the wearing face of the shoe.

8. In a brake-shoe, a reinforcing member having the ends thereof turned inwardly to confront each other in spaced relation, and a reinforcing part in said space connected to one of the longitudinal sides of the plate.

9. In a brake-shoe, a reinforcing member having a side thereof extended obliquely toward the wearing face of the shoe in a direction transverse to the length of the latter and being provided with a multiplicity of perforations.

In testimony whereof I hereunto aliix my signature in the presence of two witnesses.

JOHN J. MORSE.

Witnesses Gnomes G. i-iNnnRsoJ, lVAL'rnR C. Gears.

Copies oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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