US2597287A

US2597287A - Railway truss type brake beam end structure

Info

Publication number: US2597287A
Application number: US716452A
Authority: US
Inventors: Edwin G Busse
Original assignee: Chicago Railway Equipment Co
Current assignee: Chicago Railway Equipment Co
Priority date: 1944-02-03
Filing date: 1946-12-16
Publication date: 1952-05-20
Anticipated expiration: 1969-05-20

Description

May 20, 1952 5 e. BUSSE RAILWAY TRUSS TYPE BRAKE BEAM END STRUCTURE Original Filed Feb. 5, 1944 INVENTORI EDWIN G. BUSSE FIG. 3.

Patented May 20, 1952 RAKLWAY TBUSS TYPE BRAKE BEAM END STRUCTURE Edwin G. Busse, Chicago, Ill., assignor to Chicago Railway Equipment Company, Chicago, Ill., a

corporation of Illinois Original application February 3, 1944, Serial No.

Divided and this application December 16, 1946, Serial No. 716,452

The invention relates to brake beams such as are used on railway rolling stock, and more particularly to the end construction of truss type brake beams in which the converging ends of the compression and tension members are riveted together and mount one or more end members for carrying the brake shoe and for supporting the beam from the truck side frame. This application is a division of an application filed by the present inventor February 3, 1944, Serial No. 520,867, now abandoned.

One object of the invention is to adapt a beam of the type described for slidably engaging a bracket on the truck side frame adjacent the end of the beam.

Another object is to facilitate the replacement of a support-engaging part of the beam and of the brake head associated with the beam.

Another object is to utilize the end member of the beam to more securely assemble the ends of the tension and compression members of the beam.

These and other detail objects as will appear below are attained by the structure illustrated inv the accompanying drawings, in which Figure 1 is a top view of a beam embodying the invention, adjacent portions of the supporting side frame structure being indicated also.

Figure 2 is an end view of the left-hand end of the beam shown in Figure 1 and is drawn to enlarged scale.

Figure 3 is a horizontal section taken approximately on the line 3--3 of Figure 2.

Figure 4 is a vertical section taken on the line 4-4 of Figure 3, and

Figures 5 and 6 are sections corresponding to Figures 3 and 4, respectively, but illustrating another form of the invention.

The beam illustrated in Figures 1-4 includes a compression member I preferably of channel cross-section, a tension member 2, preferably of a flat rectangular bar section of substantially greater width than thickness, a strut 3, end members 4, each carrying a brake head 5 arranged to mount a friction shoe 6 for engaging a truck wheel I. Also carried by end member 4 is a part 8 extending beyond the end of the main members of the beam and disposed to slidably engage one or more supporting and guiding elements on the truck side frame indicated at 9.

The end of tension member 2 is bent to extend alongside the inner face of the end portion of the channel compression member and at its end is shouldered or bent to form a lip l0 engaging the end of the compression member.

14 Claims. (01. 188-228.6)

Each end member 4 includes a rear body portion forming a pocket'with a through opening extending longitudinally of the beam and receiving the end portions of the compression and tension members. A horizontally disposed rivet l l extends through the end portions of the beam tension and compression members and through the front and rear walls 12 and I3 of the end beam member pocket which receives the main member end portions.

The end member also includes a pocket, in front of that just described, having upper and lower walls I4 and I 5 and opening outwardly of the end of the beam to receive the narrow portion l6 of the support-engaging part 8.

The latter has a wide outer portion 11 extending transversely of the length of the beam inopposite directions from its narrow pocket-received portion It to provide an extended bearing on the truck frame elements 3. Preferably outer portion I! is inclined from the general plane of the beam as determined by the compression and tension members and strut, thus permitting the beam to move along the radius of a wheel at an angle to the horizontal towards and away from the wheel as the brakes are applied and released and, at the same time, providing for the application of braking forces in a horizontal direction as naturally folows the disposition of the brake pull rods and levers (not shown) extending longitudinally of the truck.

It will be understood that the inclination of portion H and support element 9 relative to the general plane of the beam, which is disposed horizontally, is arranged for a brake which is below the level of the wheel axle, as is customary. If the brake beam were positioned at the same level as the wheel axle, then portion H and its supporting bracket 9 would be disposed horizontally.

The brake head 5 has a rearwardly opening jaw, the upper and lower legs I8 of which receive between them the forwardly extendin flanges l4, l5 of the beam end member 4 and also the in-. Wardly extending portion is of the support device. Vertically disposed rivets l9 extend through elements l8, l4, l5 and hold the head and support device assembled with the end member. If de sired, the rearwardly directed edge of portion ll'i may be welded to the opposing edge of member 4 to better secure these parts together.

With this arrangement, the head 5 and support device 8 may be removed and either or both replaced without disassembling the beam main members l, Zand end members 4.

The forwardly extending portion of end member 4 and the pocket-forming elements [8 in the brake head are in substantial alignment and the brake head elements are disposed intermediate the ends of the brake head and symmetrically about the transverse center line C of the head and, accordingly, the head may be reversed top for bottom or placed at either end of the beam, thus eliminating the necessity of right-hand and left-hand patterns for casting the head and making it possible to shift the head to compensate for unequal wear on its ends or sides. If the beam is to be supported at the same height as the center of the wheel and hence to move on a horizontal line with the support device portions 16 and H lying in the same plane, then this device may be reversed top for bottom as well as being applicable to their end of the beam.

Preferably each of the brake heads is recessed at R to receive the lower cross bar of a box-type hanger which may be used in an emergency or if the beam should be installed in a truck which is not provided with the support brackets opposite the ends of the beam.

Figure illustrates another form of the invention in which the beam compression member 21 and tension member 22 and strut (not shown) correspond to those previously described, but the end member 23 and the support-engaging device 24 are formed integrally with each other and the pocket in the end member in front of the end portions of the compression and tension members receives a rearwardly projecting tongue 25 on the brake head 23 instead of the brake head being provided with a pocket to receive the end memher as in the structure previously described. The brake head and end member are held assembled by rivets 21 corresponding generally to rivets 9.

The guide engaging portion 28 of the end member is disposed asymmetrically about the pocket and it will be necessary to have right-hand and left-hand end members to mount the brake heads.

The details of the beam may be varied otherwise than as described without departing from the spirit of the invention, and the exclusive use of those modifications coming within the scope of the claims is contemplated.

What is claimed is:

1. In a railway truss type brake beam including a compression member and a tension member converging at the end of the beam with their end portions extending alongside of each other and the tension member extending beyond the com-' pression member and shouldered to engage the end of the compression member, an end member surrounding the adjacent end portions of the tension and compression members transversely of the beam and holding them assembled, and a separately formed integral brake head with a transverse passageway having relatively fixed walls and receiving said end member to mount the brake head on the end member and facing forwardly of the beam to mount a wheel engaging device, and means detachably securing the brake head to the end member independently of the compression and tension members.

2. In a railway truss type brake beam including a compression member and a tension member having its end shouldered and directly engaging the end of the compression member, an and member having a pocket opening lengthwise of the beam and receiving the adjacent ends of the tension and compression members and having a pocket opening forwardly of the beam and arranged to receive a mounting lug on a brake head.

3. In a railway truss type brake beam including a compression member and a tension member having its end shouldered and directly engaging the end of the compression member, an end member having a pocket opening lengthwise of the beam and receiving the adjacent ends of the tension and compression members and having a pocket opening forwardly of the beam, a brake head having a shoe mounting face and having a lug projecting rearwardly therefrom and inserted in said latter-mentioned pocket, securing elements extending vertically through said lug and the upper and lower walls of the pocket receiving the same, and securing elements extending horizontally through the ends of the compression and tension members and the forward and rear walls of the-pocket receiving the same.

4. Structure as described in claim 3 in which one side wall of the pocket receiving the tension and compression members forms the rear wall of the pocket receiving the brake head mounting lugs and the latter are spaced from said wall to accommodate the end of the element securing the compression and tension members to the end member.

5. In a railway truss type brake beam, a compression member, a tension member having its end shbuldered to engage the end of the compression member, an end member having a pocket receiving the adjacent ends of the tension and compression members, means extending transversely of the beam through and securing said compression, tension and end members together, means on the end member extending forwardly from said pocket and arranged to mount a brake head, and means projecting from the end member lengthwise of the beam beyond said pocket and the ends of the tension and compress on members and arranged to slidably engage an adjacent truck part to support and guide the beam in its movement towards and from the truck wheels.

6. In a railway truss type brake beam includ-- ing a compression member and a tension member converging at the end of the beam with their end portions extending alongside of each other and the tension member extending beyond and shouldered to engage the end of the compression member, an end member surrounding said end portions and thereby holding them assembled and provided with a pocket opening outwardly of the end of the beam, and a beam support device including a portion inserted in said pocket and a portion extending outwardly therefrom to engage a support bracket on an adjacent truck part.

7. In a railway truss type brake beam including a compression member and a tension member converging at the end of the beam with their end portions extending alongside of each other and the tension member extending beyond and shouldered to engage the end of the compression member, an end member including a body forming a pocket receiving the ends of said compres sion and tension members and secured thereto, there being vertically spaced substantially horizontal flanges extending forwardly from said body, a beam support device having a portion in-' serted between said flanges and having a portion extending outwardly therefrom to engage a support bracket on an adjacent truck part, and a brake head having vertically spaced flanges receiving between them said end member flanges and the enclosed portion of said device.

8. A railway brake beam structure as described in claim 7 which includes means securing together the compression member, tension member and end member, and separate means securing together the end member, support device and brake head flanges, whereby the brake head and support device may be removed from the beam without affecting the assembly of the other beam parts.

9. A new article of manufacture comprising a brake beam end member for application to the ends of a truss type beam compression and tension members extending alongside each other and hooked together, the end member including a body portion forming a pocket which opens in one direction and is adapted to receive the ends of the compression and tension members and to hold them assembled, there being elements extending from said body portion in a direction perpendicular to the direction of the pocket opening and adapted to carry a brake head forwardly of said pocket.

10. A brake beam end member as described in claim 9 in which the body portion includes a support device extending outwardly from the pocket to engage a support bracket on a truck part.

11. A new article of manufacture comprising a brake beam end member for application to the ends of a truss type beam compression and tension members extending alongside each other and hooked together, the end member including a body portion having a through passage adapted to receive from either end the ends of the beam compression and tension members and to hold them assembled with each other, said end member being provided with a recess substantially paralleling said passage and adapted to receive from either end a support device extending beyond the end member to engage a support bracket on a truck part.

12. In a railway truss type brake beam, a tension member, a compression member, said members having end portions extending alongside of each other in abutting relation with the tension member extending beyond and shouldered to engage the end of the compression member, an end member comprising a body surrounding said end portions and holding them assembled, there being a web projecting from said body beyond and abreast of the ends of the compression and tension members and arranged to slidably engage a support bracket on an adjacent truck part, said end member including a part projecting forwardly of said web for mounting a separately formed brake head, and individual elements respectively securing said brake head to said end member and securing said members together.

13. In a railway truss type brake beam, a channel-section compression member, a flat bar section tension member with its end portion extending beyond the end of the compression member and shouldered to engage the end of the compression member, an end member forming a pocket closely surrounding the adjacent end portions of said compression member and tension member transversely of the beam, a securing device extending transversely of the beam through the end member and tension member and the upright web of said compression member, said end member having an extension forwardly of said pocket and provided with a forwardly opening recess, a part seated in said recess and extending beyond the end of the compression and tension members and beyond said end member and disposed to slidably engage a support bracket on an adjacent part of a truck frame, and a brake head structure mounted on said end member and projecting therefrom transversely of the beam.

14. An end member for a railway truss type brake beam, said end member comprising a body forming a pocket opening at opposite sides of the body for insertion, from either side of the member, of the juxtaposed end portions of a beam compression and tension member, there being a forward extension on said body of less depth than said body for mounting a separately formed brake head and having a through opening for insertion, from either side of the member, of a separately formed support-engaging device.

EDWIN G. BUSSE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 895,269 Huntoon Aug. 4, 1908 960,935 Huntoon June 7, 1910 2,170,113 Busch Aug. 22, 1939 2,348,092 Parke May 21, 1944 2,356,720 Aurien et a1; Aug. 22, 1944 2,398,917 Busch Apr. 23, 1946 2,419,115 Busse Apr. 15, 1947