US2478991A

US2478991A - Railway brake beam

Info

Publication number: US2478991A
Application number: US787201A
Authority: US
Inventors: Glen J Walker
Original assignee: Chicago Railway Equipment Co
Current assignee: Chicago Railway Equipment Co
Priority date: 1947-11-20
Filing date: 1947-11-20
Publication date: 1949-08-16
Anticipated expiration: 1966-08-16

Description

Aug. 16, 1949. a. J. WALKER 2,478,991

RAILWAY BRAKE BEAM Filed. Nov. 20, 194'? 2 Sheets-Sheet 1 INVENTOR.

GLEN J. WA LKER TTORNEY.

1949- G. J. WALKER 2,478,991

RAILWAY BRAKE BEA Filed Nov. 20, 1947 z sheets-sheet 2 INVENT OR. GL EN J. WALKER I If I FIG. 7, G J BY A TORNEY.

Patented Aug. 16, 1949 Glen J; Walker, Cleveland, (that; a'ssignbf caigo Railwayv Equipmenfi Company; cfliifg dg I 111., a corporation of Illinois l Application November-20, 19' i7',,seria1INo; 18212111 15 Claims. (Cl. I88 2Z3J) The invention relates to railway brake beams of the truss type in'which compression and tension members converge near the ends of the beam and mount end members for carrying a brake shoe and for supporting. the beam from the truck framing.

One object of the'invention is to assure secure assembly of'a brake head body part and a separatedly formed supportingpart to each other and to the ends of a beam on which the parts are mounted.

Another object'is to form the support engaging. part of one metal or alloy and :to form the brake head body part of another metal or alloy;

Another object is to cast one part about the other to form a rigidunit; I

Another object is to provide a cast metal brake" head. body having ai-recess, arranged to receive' the ends of the compression'and tension mem' bers, with walls provided by a forged. member so that machining of the cast head is unnecessary.

These and other detail objects, as will appear below, are attained'by the structure illustrated in theaccompanying" drawings, in'jwhich'i I Figure l is a plan viewiof a truss'typ'e brake beam embodying. the invention, portions of the beam'being cut away andtheleft hand end" of the beam being sectioned.

Figure 2 is in part an'eno'l view 'anduin'part'a;

transverse vertical section" taken approximately on the line 2-2 of Figure 3'.

Figure 3 is a longitudinal vertical section through one end of the beam taken ap'p'roiti mately on the line 3-3 of Figure 2.

Figures 4,. 6 and '7 'are'views similar to Figure "3 V and show other'forms of the invention.

Figure is in part an. end viewand' in part-a transverse vertical section taken approximately The beam shown in Figures :1 to 3' includes a compression member I of channel-shaped cross: section, a tension member 2 of rectangular crosssection, and a strut 3Lintermediatethe endswofthe beam. The end portions :of the. compression and tension members converge, each end portion of-the tension member being received between the compressionimember flanges la -and engaging the inner faceof the compression. member web Ibl A lip.2a on the end of the tension member is". seated against the ends of the compression mounted on eachendfofjtm beam; Brake head 4. includes a b'ody'i 5 with" forwardly. projecting toes e for mount ng" a brake" sho s and a flat rectangulafbea'msunpblibing part If extendin outwardly of thebeam-aiid arranged to engage a support bracket (notfshowm on an adjacent partof'fthe' truckiii'ainiirgi. Arecess I in the body receivesith e endsjpffthetension and compression members: The back wall "8 ofthe recess engages theouteif-f-acqe ofjthef compression linember' web ibandtheton anjd bottomj'wallsjii of the recess engage the J o ter-"faces officompression member flanges lit. The mh iwan 811," off the recess eng the rewa d? faoe;i o'f the, 1 tension -m'ember andfmaintainsflip Zaj of thetension member in eng'agemefit,-- with the end" of compression memberjfll, thus in reasing strengthbf the beam ancl caiisin'gfthe" tension and compression. membersfto worktogether. more nearly-"as arunit.

Partiioihasffs eceeiege l 2?provided With latera-lly' extendinglugfsfliil Legs) 12- extend inwardl yoi the beam andWithinbody- 5. Part l0 f eb sma e body 5 preferably'is' 'madeof "malleable; iron or cast steel. Part II] is placed in the mold and body 5 is cast. aroundiegs 'l 2' with gthemetal of the body surroundifigthe"legs'andfliorming recess topan'd' bottonrwalls '35 Legs, ia' nterlock with adj acent p'ertion'sfof the body and secure part I I arid't-he' body"togethei'1' A f-tefthebrake head is cast, it mafbeah'neaied'to refine-the'grain in thecastingand make' it moremalleable.

A horizontally oisposed' nvet it through the brake head and the ends of'the tension and compressi-on members. maintains assembly of the heath: Rivet W'nassesf'ithrdiigh web-lb; of compres ion membefl; through' tension member 2 and throogn haek. 'aridfro nt' Walls s' and 8a of body sena hetweehn g ['2 "or part [0;

Figure 4"shoWs'"a brake" hea rsi comprising a body 32 jjand whiten-supporting part 33. Part 33 has legs 35*whieh' extnd'within body. 32 and. form the top aniijbot'fifm' walls of a'reeess 36. By .makin'g"pa -ti 132 f rerhi'a'f forging or bar, it is unnecessarytto'imeehine "the walls of recess 36. The ends of compressi member '31" and tension memberSBare r'eceived'in zontal rivet 39 extends "through the compression.

member; through" the te member Web ahdiflanges. A-brake-head 4 is the 'toptace o: the upperieg andfithe bottom face.

from" ayforging; or bar and portiiie'ipa rtaa;contactin 3 of the lower leg, which faces are provided with lugs 40 to secure supporting part 33 to the body.

The brake head structure shown in Figures 5 and 6 is similar to that described in Figures l-3 except that apertures 45 are provided in legs 46 of supporting part 41 instead of lugs, as shown in Figures 1-3. Brake head body 48 is cast about legs 46 and through aperturesl45 and surround the legs.

In Figure 7, brake head body 5| is formed separately from supporting part 52. Part 52 has spaced legs 53 extending inwardly of the brake head and receiving between them the ends ofthe compression member 55 and tension member 54. A vertically disposed rivet 56 extends through body 5|, through legs 53 of part 52, and through the ends of the tension and compression members. A horizontally disposed rivet 51 extends through body 5| and through the ends of the compression and tension members and between legs 53 of part 52. Rivets 5B and 51 maintain assembly of the beam. The ends of leg 53 of part 52 may be welded at W to the compression member instead of using vertical rivet 56' to secure part 52 to the beam members.

Figure 8 shows a brake head similar to that shown in Figures 1-3 except that the brake head is symmetrical about the axis y-y and may be applied interchangeably to either end of the beam. This is accomplished by positioning legs (ii of part 62 and recess 63 of body 64 symmetrically about axis y--y and with part 62 positioned parallel to the strut. The brake heads shown in Figures 4, 5, 6 and 7 show the parts at an angle to the strut so that the pull on the beam is parallel with the rail but these structures also may be made symmetrical about their central axes similarly to the brake head shown in Figure 8.

The details of the brake head and other parts 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: I

1. In a railway brake head, a body part arranged to receive the ends of beam compression and tension members and arranged .to mount a brake shoe, and a supporting part extending outwardly of said body part and arranged to engage an adjacent support bracket, one of said parts being preformed independently of the other part and said other part being cast on a portion of said preformed part. i

2. In a brake head for afltruss type railway brake beam, a body arranged to mount a wheel engaging device and havinga pocket adapted to receive the adjacent ends of beamjcompression and tension members, and a, part extending outwardly of said body and being arranged to engage an adjacent support bracket, said part being formed independently of said body and said body being cast about a portion of said part,

3. Brake head structure as described in claim 2 is which the part portion and body having integral elements interengaging each other to secure the part and body together.

4. In a brake head for a railway brake beam, a body arranged to mount a brake shoe and having a pocket adapted to receive the ends of beam compression andtension members, and a supporting part extending outwardly of said body and arranged to engage an adjacent support bracket, said part being formed of one material '4 and said body being of difierent material cast about said part.

5. In a railway brake head, a body arranged to receive the ends of beam compression and tension members and arranged for mounting a brake shoe, and a supporting part extending outwardly of said body and arranged to engage an adjacent support bracket, said part having spaced legs and said body being cast about said legs.

6. Structure as described in claim 5 in which the legs of the supporting part and adjacent portions of the body have respectively integral elements interlocking with each other to secure the body and part together.

7. In a railway brake head, a body arranged to receive the ends of beam compression and tension members and arranged for mounting a brake shoe, and a supporting part extending outwardly of said body and arranged to engage an adjacent support bracket, said part having spaced legs extending within said body, and said body being cast about said legs and surrounding each of said legs.

8. In a railway brake head, a body arranged to receive the ends of beam compression and tension members. and arranged for mounting a brake shoe, and a supporting part extending outwardly of said body and arranged to engage an adjacent support bracket, said part having legs extending inwardly of the body and provided with transversely extending. lugs, and said brake head being cast about said legs and interlocking with said lugs.

9. In a railway brake head, a body provided with a pocket for receivingthe ends of beam com pression and tension members and arranged for mounting a brake shoe, and a supporting part extending outwardly of said body and arranged to engage an adjacent bracket, said part having a leg, said body being cast about said leg and said leg forming at least one wall of said body pocket.

10. In a railway brake head, a body arranged to mount a brake shoe, and a supporting part extending outwardly from the body to engage a support bracket, said part having legs spaced to form opposite walls of a pocket for receiving the ends of beam compression and tension members, the body being cast about said legs and forming other walls of said pocket.

11. In a railway brakehead, a body arranged to receive the ends of a beam compression and tension member and having means for mounting a brake shoe, and a supporting part at the end.

of the beam extending outwardly of said body and arranged to engage a support bracket on the truck frame, said part having legs provided with apertures, and said body being cast about said legs and into said apertures.

12. In a railway truss type brake beam, a channel shaped compression member and a tension member with their end portions converging, the end portions of said tension member being received between the flanges of said channel shaped compression member, elements on the tension member engaging the ends of the compression member, structure mounted on said end portions at each end of the beam for maintaining engagement of said members and including a brake shoe mounting body, a supporting part extending out wardly of said body and arranged to engage an adjacent support bracket, said part having legs spaced apart the'depth of said channel member and receiving said channel member therebetween 75 and extending within said body, and means maintaining assembly of said structure to said members.

13. In a railway truss type brake beam, a compression member and a tension member with their end portions converging and interengaging and a brake head mounted on said end portions, said head comprising a body part arranged to mount a brake shoe and a supporting part extending outwardly of said body part and arranged to engage an adjacent support bracket, one of said parts being pre-iormed independently of the other part and said other part being cast about a portion of said pre-formed part, and a securing device maintaining assembly of at least one of said parts to at least one of said members.

14. In a railway truss type brake beam, a compression member and a tension member with their end portions converging, elements on the tension member engaging the ends of the compression member, structure mounted on said end portions at each end of the beam for maintaining engagement of said tension member element with said compression member and including a brake shoe mounting body and a supporting part extending outwardly of said body and arranged to engage an adjacent support bracket, said part having spaced legs extending within said body and receiving between them and engaging said end portions, and means maintaining said structure assembled with said members.

15. In a railway truss type brake beam, a compression member and a tension member with their end portions converging, elements on the tension member engaging the ends of the compression member, structure mounted on said end portions at each end of the beam for maintaining engagement of said tension member element with said compression member and including a brake shoe mounting body and a supporting part extending outwardly ofsaid body and arranged to engage an adjacent support bracket, said part having spaced legs extending within said body and receiving between them said end portions, and a vertically disposed rivet extending through said body, legs and members and a horizontally disposed rivet extending through said body and said members and between said legs for maintaining assembly of said structure to said members.

GLEN J. WALKER.

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

UNITED STATES PATENTS Number Name Date 1,022,440 Perry et a1. Apr. 9, 1912 2,398,917 Busch Apr. 23, 1946 2,408,015 Busse Sept. 24, 1946' 2,419,115 Busse Apr. 15, 1947