US1187470A - Brake-shoe. - Google Patents

Description

B. O. ROWELL, DECD. I.. C. HOWELL. EXECUTRIX.

BRAKE SHOE. APPLICATION FILED SEPT. 7, I9I5. 1,1 87,470. Patented 11111613, 1916.

llll I1 UNITE@ YATE@ BENTON C. ROVELI, DECEASED, LATE OF CHICAGO, ILLINOIS, BY LILLA C., RO/VELL,

EXECUTRIX, OF CHICAGO, ILLINOIS; SAID BENTON C. HOWELL ASSIGNOR T0 ANCI-IOR BRAKE SHOE AND MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

BRAKE-SHOE.

Specification of Letters Patent. Pagntd June 13, 19160 Original application filed January 2, 1915, Serial No. 50. Divided and this application filed September 7, 1915. Serial No. 49,272.

To @ZZ whom t may concern:

Be it known that BENTON C. HOWELL, late a citizen of the United States residing at Chicago, in the county of Cook and State of Illinois, did invent certain new and useful Improvements in Brake-Shoes, of 'which the :following is a specification.

The present invention relates `to brake shoes such as are commonly used on railway rolling stock, and more particularly brake shoes for this purpose which are reinforced and contain wear resistant inserts of harder material than the body of the shoe.

This application is a divisional from application, Serial Number 50, iled January 2nd, 1915.

The principal objects of the present invention are to provide improved means for connecting the strap or supporting lug to the shoe, and particularly to the reinforcement in the shoe; to provide improved means for preventing the falling of portions of the brake shoe upon the track; to provide improved means for preventing separation of the component parts of the shoe as the result of excessive wear; to provide improved means for connecting the reinforcing members of inverted channeled cross section to the other portions of the shoe, and generally, to improve, simplify and cheapen the construction of brake shoes for railway and other vehicles. In attaining these and other objects and' advantages to be hereinafter set forth, there is provided a construction one embodiment of which is illustrated in the accompanying drawings, in which:

Figure 1 is a plan view of a brake shoe constructed in accordance with the present invention; Fig. 2 is a vertical transverse section on the line 2 2 of Fig. 1; and Fig. 3 is a perspective View 0f the supporting strap or lug.

The shoe consists of a body portion 10 provided with two series of wearing inserts 11 and 12. The first set of inserts 11 is arranged over the flange of the wheel and the second set of wearing inserts 12 is arranged to contact with the iiat portion of the wheel. These wearing inserts are preferably made of harder metal than the body of the shoe. The body of the shoe is reinforced by means of inverted channeled members 14 and 15 preferably arranged as shown along the upper surface of the brake shoe. Although the reinforcing members are in contact with the body of the shoe on their vertical and under surfaces only, except at the ends of the shoe, they are connected to the body portion by means of the wearing inserts. For binding together the inserts and vthe reinforcing members, apertures 16 and 17 are provided 1n the latter, through which upwardly eX- tending projections 18 and 19 of the wearing inserts extend. To enable these projections to grip the reinforcement, the edges of these apertures are conically formed so as to provide countersunlrapertures adapted to engage the conically shaped projections 18 and 19 of the inserts.

The supporting strap 48 is formed with inwardly offset'ends 40 adapted to be passed through apertures 41 in the reinforcement 15. These slots fll are made slightly wider than the thickness of the supporting strap in order to enable the oii'set ends to pass therethrough, as shown in Fig. 2. Although the metal of the insert is cast around the offset ends of the strap and holds them in position, parts of the reinforcement itself are bent to provide lockingA engagement between the strap and the reinforcement. For that purpose a slit or aperture L13 is formed at the center' of the reinforcement 15, and the edges 44 of such slit or aperture are bent around so as to engage the oii'set ends et() of the strap, as shown in Fig. 2. It will be observed that any pressure exerted upwardly on the strap will tend to draw the edges 1+i upward and thereby produce a stronger lock between the reinforcement and the strap than was originally the case. Attention should also be called to the fact that as a slit is employed, instead of a circular aperture having conically depressed sides, the metal between the edges L14 will be connected to the remainder of the insert adjacent the ends of the slit, even if by wear the insert has been worn down to the lower portion of the edges 11i adjacent the center of the slit. YVhile the edges 44 are downwardly and rearwardly inclined adjacent the center of the slit toward the ends of the slit, they are downwardly and inwardly inclined so as to grip the insert until the latter has been worn almost completely away.

Having thus described the invention and illustrated its use, what is claimed as new and desired to be secured by Letters Patent is l. A brake shoe comprising, in combination, a body portion and a reinforcing memof which are turned downwardly and out-V wardly along-curved lines. l

d. A brake shoe comprising, in combination, a body portion and a reinforcing niember embedded therein having a slit the edges of which are turned downwardly along curved lines. f y

5'. A brake shoe comprising, in combination, a body portion, aA strap and a reinforcing member embedded in ksaid Vbody portion hav-ingslots for the reception vof -thelends `of the strap, and an aperture intermediate said slots the edges of which aperture aretu-rned downwardly and outwardly to engage the ends of said strap.

6. A brake shoe comprising, in combina# tion, a body portion, a strap having inwardly bent ends and aY-reinforcing member embedded in said body portion having slots for the reception of the ends of the strap, and an aperture intermediate said slots, the edges of which aperture are turned downwardly and outwardly to engage ythe ends lof said strap.

7. A brake shoe'eomprising, in combination, a. body portion, areinforcing member and a strap member having ends adapted to enter slots in said reinforcing member, and one of the said members being bent along curved lines to provide interlocking surfaces whereby disengagement of the strap member is prevented.

ln testimony whereof I have hereunto signed my name in the Ypresence of the two subscribing witnesses.

v LILLA C. ROELL, Executrz'w of las?? will md testament efenf on 0. Rowell,v deceased.

i l/Vitnesses: Y

RiDsDALE ELLIS,' DONALD C. WILLIAMS.

Copies of this patent may b'e obtained Afor 've cents each, by addressing -the Commissioner of Iatents,

' Washington, I). 0;"

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