US2254513A - Railway truck structure - Google Patents

Description

Sept. 2, 1941. E. G. BUSSE RAILWAY TRUCK STRUCTURE Filed March 2 0 1940 2 Sheets-Sheet 1 Bow: (5. 895 s:

Sept. 2, 1941. V E. BUSSE 2,254,513

RAILWAY TRUCK STRUCTURE Filed March 20,4940 2 Sheets-Sheet 2 FIG.6.

FIG.8. 40 FIGiO.

-77 Eowm'G. Busss:

' TIIORNEY,

Patented Sept. 2, 1941 RAILWAY TRUCK STRUCTURE Edwin G. Busse, Chicago, Ill., assignor to Chicago-Railway Equipment Company, Chicago, 111., a corporation of Illinois ApplicationMarch 20, 1940, Serial No. 325,034

Claims.

The invention relates to railway rolling stock and more particularly to the mounting of brake beams upon the truck frame and the guiding of the beams in their movement to and from the wheels.

The usual support for the brake beam on the truck frame comprises a swinging link suspended from a side frame bracket above the beam and pivotally engaging the brake head. This device will not in itself guide the brake beam, 1. e., maintain its desired angular relation to the wheel tread, throughout the movement of the brake beam to and from the wheels. Usually other devices are provided for this purpose, the same being carried by the truck side frame or the spring plank or the bolster.

One of the objects of the invention is to simplify the support and guiding of the beams.

Another object of the invention is to facilitate the application and removal of the beams to and from the truck for repair or replacement.

Another object of the invention is to support and guide the ends of an A. A. R. standard truss type brake beam on the side frames by brackets on the side frames adjacent to the ends of the brake beams without interfering with the usual tensioning nuts projecting beyond the brake heads.

The present invention utilizes some of the features more generally disclosed and covered in copending applications filed by the same inventor January 6, 1938 and bearing Serial Nos. 183,601 and 183,602, respectively. Since the filing of the present application the first-mentioned copending application has matured into Patent No. 2,197,785, dated .April 23, 1940, and the second-mentioned copending application has matured into Patent No. 2,226,551, dated December 31, 1940.

The general objectives referred to above and other more specific objects, as will appear hereinaf-ter, are attained by the structure illustrated in the accompanying drawings in which- Figure -1 is a fragmentary top view and horizontal section through portions of the side frames of a railway truck showing the adjacent portions of two truck wheels and the brake beam mounted on the side frames and applied to the wheels.

The section portions of the figure are taken ap-' proximately on the lines i-I of Figure 2.

Figure 2 is a vertical transverse section through the truck side frames and shows the brake beam and wheels in elevation.

Figure 3 is a side elevation of the major portion of the truck with a part of the side frame broken away to illustrate the structure more clearly, and showing bracket parts sectioned as indicated by the line 3-3 in Figure 2.

Figures 4, 5, 7, 9, 11, 13, 14, 15 and 16 are vertical transverse sections through portions of truck side frames and illustrating parts associated therewith, and each embodying a different form of the beam supporting and guiding structure to which the present application is directed.

10 Figures 6, 8, 10 and 12 are horizontal sections taken on the corresponding section lines of Figures 5, '7, 9 and 11, respectively.

Figures 1, 2 and 3 show the moreimportant elements of a familiar type of railway four-wheel truck which includes wheels 1, side frames 2, springs 3 carried directly on theside frames, or on a spring, plank (not shown) connecting the side frames, and a bolster 4 supported on springs 3 and projecting through the window 5 between the top and bottom chords 6 and 'l of the side frame and its upright columns 8. A truss type brake beam is provided for the wheels and includes a compression member 9, the ends of which enter and seat the brake heads ill, a strut II, a tension rod I! with its ends extending through the brake heads and threaded for the application of tensioning nuts 13 seated on the outer faces of the brake heads.

The right hand side frame, shown in Figures 3o 1 and 2, is provided with flanges or guidesi 5 ad-' jacent to the ends of the brake beam and spaced vertically to receive between them cooperating flanges or ears l6 provided on the outer facerof the adjacent brake head l0. Flanges l5 and i6 5 extend a substantial distance longitudinally of the truck and are inclined to the horizontal, as best shown in Figure 3, and support and guide the brake beam in its movement to and from the wheels.

Since it is necessary to apply the beams to the truck after the truck has been assembled and to remove the beams from the truck at intervals without disassembling the other parts of the truck, and since the clearance between the wheels and the bolster and'bolster spring, and

spring plank if the same is present, will not permit rearwardmovement of the beam to clear supporting flanges such as are shown at 15, it is desirable to provide a supporting member at the opposite side of the truck which may be shifted into a functioning position underlying the end of the brake beam, or into a position in which it clears the brake-beam end and permits it to be dropped, as indicated by the broken lines B in Figure 2, whereupon the beam may be moved lengthwise away from flanges I! and removed from the truck. Accordingly. the beam support ingmemberatthelefthandsideofthetruck is movably moimted upon the left hand side frame.

In Figure 2 this member comprises a bracket ll opposite to the end of the beam with spaced ears it projecting through an opening It in the side wall of the frame and pivotally connected.

by rivets II to lugs 2| on the frame side wall. The axis of rivets II extends longitudinally of the truck and, as shown, in substantially parallel to the top face of bracket i! which supports the beam. An intermediate car 22 on bracket il projects upwardly and inwardly between lugs 23 on the side frame and is detachably secured thereto by a pin 24 which may be removed readilybyaworkmanatthesideofthetruckto permit bracket ll to swing downwardly to the broken line position indicated at "a, whereupon the brake beam may be dropped and removed as previously described. Preferably guides l and bracket II have their rear ends flanged to limit the movement of the beam away from the wheels.

A depending lug L on bracket i1 seats a rubber pad R which is thrust against the side frame wall when pin 24 is inserted through ear 2! and lugs 23, and this pad cushions play between the bracket and frame.

While the adaptability of the above described structure for its intended purpom is evident, it will be noted that the brake beam may follow A. A. R. standards in every respect and, if desired, the brake head may be provided with pockets for receiving the usual hanger suspended from the upper part of the side frame. Obviously both sides of the truck may be equipped with a. pivoted bracket for supporting the beam if it were preferred not to have different side frame constructions, or if for any other reason it was desired to provide a shiftable bracket at both ends of the beam.

Figure 4 illustrates a construction corresponding to that just described except that the bracket 25 is below the level of its pivot 26, and the holding pin 21 through an ear below said level instead of through an ear above said level. with this arrangement the beam engaging portion of the bracket swings away from the beam more rapidly scribed.

than in the form previously deserted between wall 5i and the upright leg of Figures5and6illustrateaform of-the in-' vention in which the beam supporting bracket 34 swings about a vertically disposed pivot pin and is retained in its functioning position by removable bolt II which is readily accessible from the outer side of the truck.

Figures 7 and 8 illustrate another form of the invention in which the beam supporting bracket is not pivoted to the side frame but comprises an L-shaped member having a horizontal leg 4| and a vertical leg 4|, the horizontal leg sliding over the upwardly facing edge of the opening in the side frame and the vertical leg being movable between two upright lugs 43 on the side frame. A pin 44 may be inserted through lugs 43 to prevent the retraction of legs 44-. Preferably a spring 45 is compressed between leg 4i and the opposing face of the frame side wall 46,.and this spring will hold the bracket against play in the frame. Upon removal of pin 44, the

bracket may ,be withdrawn to the dotted line position indicated to facilitate the dropp of the adjacent end of the brake beam.

Figures 9 and 10 illustrate a similarly shaped angular bracket 5., the upright leg of which is bolted directly to the side frame wall Ii by bolts 52 having nuts It which may be removed through the opening in the outer side of the truck to permit the bracket to be slid inwardly as indicated. Preferably. rubber elements 84 are inthe bracket to prevent play between the parts.

Figures 11' and 12 illustrate another form of the invention in which the bracket it rests upon an upwardly facing shelf it in the side frame ll. Detachable bolts It pass through an opposing flange 59 and bracket 55 to retain the latter in projected functioning position. Preferably shelf 58 is slotted to receive a boss 84 on the bottom of bracket 55, and this boss will limit the transverse movement of the bracket through the frame.

In Figure 13 the inwardly extending shelf on the frame is omitted and the bracket ii has a return bend 62 on its inner end to overlie the lug 63 on the side frame to contribute to the stable support of the bracket. Detachable bolt 64 holds the bracket in functioning position.

- In Figure 14 thebracketfl is slotted at it to receive a bolt 61 which limits the left hand movement of the bracket to prevent its disassembly from the side frame. Bolts it are inserted through flanges t9 and II to hold the bracket in functioning position.

In Figure 15 the bracket II has its inner end it turned downwardly and bolted to the frame side wall ll.

,In Figure 16 bracket II has a single upstanding ear Ii receivable between two upright lugs 82 on the side frame wall It. A horizontally disposed pin 84 holds the bracket in functioning position.

Each of these forms embodies one or more features which may be found advantageous for one reason or another, according to the particular conditions encountered, and those working in the art will likely make other variations in the details of the structure without departing from the spirit of the invention, andthe exclusive use of such modifications as come within the scope of the invention is contemplated.

What is claimed is:

1. In a railway truck, wheels, a side frame, a brake beam, and a support for said brake beam comprising a bracket pivoted to said side frame and movable on its pivot into and out of functioning position in which it underlies a head on said brake beam and thereby supporting the beam and having its head engaging surface disposed at an angle to the horizontal to maintain the desired angular relationbetween the brake beam and the adjacent wheel during the application and release of the brake.

2. In a railway truck, wheels, a side frame having the usual top, bottom and upright elements forming an opening in said frame between each of said upright elements and the adjacent wheel, a brake beam, and a device for supporting said beam comprising a bracket mounted on said side frame adjacent the end of the beam and extending inwardly from said side frame and shiftable on its mounting into and out'of functioning position, and a detachable element for securing said bracket in place, said element being accessible of thebrake beam includes an upright wall extending longitudinally of the truck, and the beam supporting bracket projects through. said wall 7 and is secured at the side of said wall facing away from the beam.

4. A structure as described in claim' 2 in which the portion of the side frame adjacent the end of the brake beam includes an upright wall extending longitudinally of the truck, and the beam supporting bracket projects through said wall and is pivoted to the side frame by a pin seated in said side frame at the side of said wall facing away from the beam.

5. In a railway truck, wheels, a brake beam therefor, a side frame including an upright wall extending longitudinally of the truck adjacent to the end of said brake beam, and a support for said beam slidable on said wall transversely of the truck into and out of functioning position.

\ the sole support for the adjacent end of the brake beam, said member, at one end of its sliding movement, providing for the dropping and removal of the beam from the truck.

7. In a railway truck, wheels, a brake beam therefor comprising a compression member, brake heads seated thereon, a strut, a tension member extending over said strut andv through said heads, and nuts threaded on the ends of said tension member and seated on the outer facesof said heads, and a side frame having brackets engaging downwardly and upwardly facing elements on said heads forsupporting and guiding the beam, said brackets being spaced apart to clear the corresponding tension member nut, at least one of said brackets being movable on said side frame away from said beam to provide for the dropping of-the latter when it is to be removed from the truck.

8. In a railway truck, wheels. side frames at opposite sides of the truck, a brake beam extending between said side frames, one of said side frames having integral means for supporting and guiding the adjacent end of said beam, and the other of said side frames having a' bracket movably mounted thereon to shift into a position beneath the adjacent end of said brake beam to support and guide the same in its movement towards and away from said wheels, or to shift into a. more remote position to, providefor the dropping of the adjacent end of the beam and the subse quent movement of the beam lengthwise and away=from said means to remove the beam from the truck.

9. In a railway truck, wheels, 8. side frame, a brake beam with heads and shoes, a device movably mounted on said side frame to shift into and out of a functioning position in which it underlies a portion-of one of said heads and extends longitudinally of the truck to guide the beam as its shoes are applied to the wheels, an element for holding said device in functioning position, and yielding means compressed between said frame and device when said element is in place to cushion play between the assembled parts.

10. In a railway truck, wheels, a side frame including an upright web extending longitudinally of the truck, a brake beam movable to and from said wheels, and a device for supporting said beam during such movement and comprising a member mounted on said web at the side thereof facing outwardly of the truck, said member projecting through said web to engage said beam, said member beihg retractable through said web, without being disassembled from the side frame, to facilitate dropping of the adjacent end of the brake beam when the latter is to be removed from the truck. v

11. A structure as described in claim- 10 in which the beam supporting member is pivoted on the side frame web and is movable on its pivot through said web into and out of functioning position, there being releasable means for holding said member in functioning position.

12. In a railway truck, wheels, a side frame, a brake beam extending transversely of the truck with an end portion projecting into the space between the vertical planes of the opposing faces of said frame and the adjacent wheel, a member mounted on said side frame and movable thereon,

portion, and readily detachable means for holding said member in said position.

13. A truck structure as described in claim 12 in which the beam and the supporting member have co-acting faces inclined to the vertical longitudinally of the truck to maintain the desired angular relation between the beam and the adjacent wheel in its movement to and from the wheel as the brakes are applied and released.

14. A truck structure as described in claim 12 which includes a .pivot element maintaining the assembly of'the side frame and the beam supporting member, and the readily detachable means cocperateswith said pivot element to support the device in functioning position.

15. In a railway truck, wheels, a side frame, a brake beam, a member mounted on said side frame opposite to the end of the beam and forming an individual support and guide for'the end of the beam in its movement to and from the wheels, the mounting of said member on the frame including a pivot element, the axis of which is disposed longitudinally of the truck, said member being movable about said element upwardly into functioning position and downwardly into a position in' which it clears the adjacent end of the holding said member in functioning position.

, EDWIN G. BUBSE.

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