US712654A - Brake-beam and attachment. - Google Patents

Description

Nu. 7|2,a54. Patented Nov. 4. I902.

G. B. F. COOPER. BRAKE BEAM AND ATTACHMENT??- {Ayplication filed Apr. 24, 190:3.

(No Model.) 2 Sheets-Sheet I.

3 maeutoz I l v'whwoom m: NORRlS PEYERS coy, Pnovaumm msmuomu. b. c

No. 70,654. Patented Nov. 4,1902.

'6. B. F.COOPER.

BRAKE BEAM AND ATTACHMENT;

(Application filed Apr. 24, 1902a (No Model.) 2 Sheets-Sheet z. n

UNITED STATES GEORGE B. F. COOPER, or DETROIT, MICHIGAN.

BRAKE-BEAM AND ATTACHM ENT.

srEcmroA'rIoN forming part of Letters Patent No. 712,654, dated November 4, 1902.

Application filed April 24, 1902. Serial No. 104,499. (No model.) V

To all whom it may concern:

Be it known that I, GEORGE E. F. COOPER,

a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in -Brake-Beams and Attachmen ts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to brake-beams, particularly. those used on railroad-cars.

The object of the invention is to improve the construction of. the beam, the beam-fulcrum, the wheel-guard, and the safety-chain eye.

A further object is to form a beam on which the brake-heads can be reversed or clamped to either edge of the beam.

A further object is to provide improved means for clamping together the parts of a two-part fulcrum.

A further object of the invention is to utilize the idea of forming the wheel-guard and safety-chain eye in one piece with new and improved means for attaching the same to the beam.

A further objectis to more securely join the f ulcrum-pieces and the wheel-guard piece to the beam by casting rivets integral with said pieces adapted to be spread or hammered down to join the pieces to the beam.

With these and other objects in view the invention is hereinafter described,and is illustrated in the accompanying drawings, in which- Figure 1 is a plan view of the beam. Fig. 2 is a detail face view of the fulcrum, showing the position of the parts before the tenons are hammered down to clamp the parts together. Fig. 3 is a front view of the fulcrum with the parts separated. Fig. 4 is a side view of the fulcrum, showing the beam in section. Figs. 5 and 6 are front and side views, respectively, of a modification of the fulcrum in which the tenons run horizontally. Figs. 7 and 8 are respectively side and top views of the wheel-guard and safety-chain eye.

The construction of the fulcrum embraces the idea of joining two parts by dovetail tenons, which are preferably made to extend through mortises adjacent the face of the brake-beam and are then upset and hammered down over the edges of the flanges of the brake-beam, so that the parts are securely joined.

In the drawings, 6 indicates the brake-beam, which may be either rolled, pressed, or cast. This is formed in the shape of an I-beam, one edge of which is straight and the other edge of which is curved or has the form of 21. segment, as at (i except at the ends of the beam, where it is formed parallel with the opposite edge, as at 6", for a space sufficient to permit the brake heads to be driven onto either flange. This permits the brake-heads to be reversed or changed to either side of the beam without a change of pattern.

are properly shaped to embrace one flange and, a portion of the web of the beam. At the rear of one of .the fulcrum parts a rivet '7 is formed integral therewith and is preferably hollow, so that it may be readily spread when inserted through holes in the web of the beam and the other part of the fulcrum. Ears 8 project from the front of thefulcrum-pieces for the attachment of the brake-lever and are inclined, as usual. At the front the fulcrum parts are scar-fed with a bevel, as at 9, extending betweenand parallel to the ears 8 and butts, as at 10. Immediately in the rear thereof and next to the face of the beam tenons 11 are formed on each part, extending through corresponding mortises in the other part. A convenient form of construction is that shown in Figs. 2 and 3, in which two tenons are formed on one part and one on the other. These tenons are formedof sufficient length to extend beyond the part through which they pass, so that they project when the parts are joined, and arethen hammered down over the edge of the beam-flange to clench the parts together. As above indicated, the sides of the tenons and mortises are respectively spread and undercut, so that a dovetail joint is formed.

In the embodiment above described the tenons extend vertically; but the modification shown in Figs. 5 and 6 has horizontal The fulcrum is formed of two parts 7, which tenons which hold together the parts of the fulcrum, but which are not capable of being clamped over the edges of the flanges of the beam as the vertical ones are.

The wheel-guard comprises a casting 12, having a projecting pin 12 and a downwardly-extending arm 12, which is upset around the lower edge of the beam-flange to clamp the castings to the flange. An eye 13 to receive the safety-chain is formed integrally with the casting, as is also a rivet 14, which extends through and is spread beneath the web of the beam.

All parts above described are preferably cast or formed of malleable metal, so that they may be swaged and upset, as indicated. The mortise and tenons fit snug, so that considerable force is necessary in putting the parts together. The joints formed will not readily loosen. The rivets are shown as formed integrally with the fulcrum and wheel-guard; but ordinary. rivets may be used, if desired.

What I claim is- 1. The combination with a brake-beam, of a fulcrum formed of two parts held together by swaging over the beam.

2. The combination with a brake-beam, of a fulcrum formed of separate parts having interlocking members swaged over the beam.

3. The combination with a flanged beam, of a fulcrum comprising two parts each having a dovetail tenon extending through a mortise adjacent the beam and clenched over the edge of the beam-flange.

4. The combination with a brake-beam, of a two-part fulcrum, one of which has an integral rivet extending through the web of the beam and the other part of the fulcrum.

5. A fulcrum comprising two parts united by a dovetailed joint and a rivet integral with one part.

6. A fulcrum comprising two parts each of which has a dovetail tenon extending through the other part and upset to clench the parts together.

7. The combination with a brake-beam, of a wheel-guard and chain-eye formed in one piece and swaged to the beam-flange.

8. The combination with a brake-beam, of a wheel-guard and chain-eye formed in one piece with a face-plate extending down the face of flange and turning over the lower edge of the flange.

9. The combination with 'a brake-beam, of a wheel-guard casting swaged to the beamflange and havinga chain-eye formed therein.

10. The combination with a brake-beam, of a Wheel-guard casting, having a chain-eye formed therein, riveted to the beam-web and swaged to the beam-flange.

11. A one-piece, uncut, cambered brakebeam having a web provided with flanges at each edge projecting laterally in both directions, the end portions of the flanges being parallel, and brake parts embracing the flanges on both sides and riveted to the web.

12. An uncut brake-beam flanged at each edge, one edge being straight and the other segmental except at the ends, where the edges are parallel, and having rivet-holes in the web for attachment of similar fulcrum and other brake parts on either side, substantially as described.

18. A segmental uncut I brake-beam so formed that the brake parts can be mounted on either side of the beam without change of pattern.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE E. F. COOPER.

Witnesses:

AARON BRYANT, SAML. MOORE.

Images