US2049601A - Railway brake structure - Google Patents

Description

Aug. 4, 1936. E. G. BussE RAILWAY BRAKE STRUCTURE Filed Jui 11, 1951 2 Sheets-Sheet l Y hi 6023f" 5/10}? 50556 Qf/axwey Aug. 4,' 1936. E. G. BUSSE RAILWAY BRAKE STRUCTURE I Eiied July 11, 193} 2 Sheets-Sheet 2 Wren/0r 451W? Edsse Patented Aug. 4, 1936 PATENT OFFICE.

RAILWAY BRAKE STRUCTURE Edwin G. Busse, Chicago, 111., assignor to Chicago Railway Equipment Company, Chicago, 111., a

corporation of Illinois Application July. 11, 1931, Serial No. 550,238

19 Claims. (01. 188-210) This invention relates to railway rolling stock and consists particularly in novel brake beam guiding and safeguarding means.

Various devices have been developed for guiding and safeguarding brake beams, in most of which a strap or arm extending beneath the beam engages or is secured to the spring plank, a

transom or other frame element behind the beam.

. In some cases, however, this arrangement is impractical as, for instance on short trucks where inside hung brake beams are comparatively close together. Furthermore, it is more difficult to accurately control the position of the beam by a guide at the rear thereof than "by a guide at the front thereof. The present invention has for its main'object the provision of a device which extends in front of the brake beam assembly and safeguards the assembly and maintains the desired angularity of the assembly and particularly the brake shoe and which may be readily applied to the type of truck referred to above.

This object and more detailed objects are attained by the structure illustrated in the accompanying drawings in which:

Figure 1 is a vertical longitudinal section through part of a truck illustrating one form of my invention.

Figure 2 is a rear elevation of the same structure shown partially in vertical transverse section.

Figures 3 to 10, inclusive, are detail vertical sections illustrating the various modifications of the invention.

Figure 11 is a detail end elevation of still another modification.

Figure 12 is a vertical section taken substantially on the line I2i2 of Figure 11.

Figure 13 is a detail section corresponding with Figures 3 to 11 and illustrating another modification.

Figure 14 is a vertical transverse section taken substantially on' the line Ill-44 of Figure 13.

4 Figure 15 is a horizontal section taken on the line I5l5 of Figure 14.

Figures 1 and 2 illustrate a portion of a truck including a truss-type side frame I supported. on wheels 2 through the usual journal boxes 3.

50 Inside hung brake beam i is pivotally suspended from brackets 5 by means of hangers 6, one being located on each side of the truck and engaging the corresponding brake head 1 at the end of the brake beam.

Projecting from side frame I forwardly of the brake hanger bracket is another bracket 8 which rigidly mounts the upper end. of an auxiliary supporting strap 9 by means of pin ID, the strap being hooked through a loop ll projecting sidewardly from the upper part of the brake head. 5 The strap 9 is resilient and serves toprevent undesired tilting of the brake beam and head and is arranged to maintain a parallel or concentric relation between the surface of the brake shoe and the wheel and to thrust the brake 10 beam away from the wheel when pressure is released.

In Figure 3, strap I2 is rigidly secured to a bracket l3 projecting from the side frame, the bracket having an arcuate bottom web against which a similarly shaped portion it of strap I2 is pressed by a pin l5. Strap l2 engages the front end of an arm [6 which is rigid with the beam compression member l1. Arm l6 has a depression I9 receiving the beam tension mem- 20 ber H8. The upright portion of strap [2 is curved to provide for yielding vertical support of the front end of the beam so that the entire face of the shoe'may be applied to the wheel even though the shoe is not truly parallel to the wheel tread.

In Figure 4, strap 20 has a loop 2| in itsupper portion extending through an opening 6 la in the upright element of the bracket 6|. A pin 22 extends through loop 2! and rigidly secures strap 20 to the bracket. The supporting strap extends downwardly in front of and beneath tension member 23 of the brake beam and then loops around the compression member 24 and is secured thereto by means of a bracket 25.

In Figure 5, strap 26' is in rigid engagement with bracket 21a in front of the brake hanger bracket 28 and has a downwardly curving intermediate portion and an inclined lower bearing portion, the latter portion extending beneath pin 21 on brake head 29. As brake beam 30 moves toward the wheels, pin 21 slides upwardly along strap 26' to the broken line position. The elastic guiding and safeguarding straps 9, I2, 20, and 26 in this form and in the forms previously described also serve as brake releases.

In Figure 6, curved strap 3| of yielding material is pivotally mounted in bracket 32 located forwardly of brake hanger bracket 33 and is secured to pin 34 projecting from the side of the brake head 35.

The device 'in Figure 7 is similar to that. in Figure 6 except that curved strap 36, pivotally secured to bracket 31, engages the front end of an arm 38 which is rigid with compression mem- .and prevent its falling to the tracks.

ber 39 of the truss brake beam and has a recess 49 for receiving tension member 4|.

In each of the Figures 8, 9, and 10, the supporting strap is preferably formed of yielding material and slidably engages an inclined surface on the supporting bracket, .as clearly illustrated. In each of the forms, the supporting strap slides upwardly on its bracket as the brake beam moves towards the wheels and yieldingly prevents improper tilting of the beam.

In Figure 8, strap 42 curves rearwardly an then downwardly in front of the beam engaging tension member 43 thereof and is rigidly secured to compression member 44. In Figure 9, strap 45 is secured to a bracket 46 mounted on compression member 41, the bracket having a forwardly projecting arm 48 provided with a forked front end 49 which receives and supports tension member 50. In Figure 10, similar to- Figure 8, strap 51 is secured to the compression member 53 and engages tension member 52 of the beam, but is .located closer to the brake head than in Figure 8.

The form illustrated in Figures 11 and 12 corresponds in general with that in Figures 8 and 10 except that strap 52a extends substantially vertically upwardly from the brake beam and then bends sharply and passes between a pair of spaced web elements 53a projecting inwardly from brake hanger bracket 54 and providing a yielding support for ,the strap in front of the pivot P for the brake hanger H.

Figures 13, 14, and 15 illustrate a modification similar to that in Figure 10, except that strap 59 .bears against an adjustable plate 51 which is freely mounted between upright legs 56 of brack et 55. Plate 51 rests upon screws 60 threaded in plate 6! which connects the lower ends of legs 55. The angle of bearing plate 51 as well as its vertical position may be varied to conform with particular conditions, such as the length of the resilient guiding and safeguarding strap 59 and the condition of the brake shoe,

In all of the forms, the resilient auxiliary support strap and its bracket are located substantially in front of the pivotal support of the brake beam hanger, that is, towards the wheels from a line extending transversely of the truck through the brake hanger pivots on the truck side frames,

and in such position as not to interfere with other brake rigging, The devices in all forms designated 9, l2, 20,26, 3], 36, 42, 45, 5|, 52a, and 59 in the drawings permit free movement of the brakes to and from the wheels, while at the same time guiding and supporting the beam so that the shoes will bear concentrically against the wheel treads. In each of the Figures 1, 3, 5, 6, 7, 8, 10, 12 and 13, the guiding and supporting strap engages the brake beam assembly in front of the pivotal axis of the beam, that is, in front of a line drawn transversely of the truck between the hanger pivots in the brake heads. In case of brake 'hanger failure each of the devices is adapted to bear the entire weight of the beam Devices within the spirit of the invention need not perform all o'f'the functions of guiding, supporting, and safeguarding the associated beam.

Figures 3, 7, 8, 9, 10, 12, and 13 are particularly ,adapted for use in connection with truss-type .be secured to the frame by rivets or other means,

or may be cast integrally therewith as desired. In either case the brackets may be considered as part of the frame.

Obviously, the invention is not limited to the exact details shown in the various forms, but other modifications might be made without departing from the spirit thereof, and I contemplate the exclusive use of all such modifications as come within the scope of the appended claims.

What is claimed is:

1. In a railway truck, a side frame, a brake hanger, a pivot on said frame for said hanger, a brake beam assembly carried on said hanger, a resilient member for guiding and safeguarding said assembly to maintain the desired angularity of the brake shoe, and means located forwardly of the vertical plane of the axis of said pivot and suspending said member from said frame.

2. In a railway truck, a side frame, a bracket thereon, a brake beam assembly pivotally supported from said bracket, an element on said frame located forwardly of said assembly from said bracket, and a resilient brake beam guard, guide, or support member depending from said element and engaging said assembly in front of the pivotal axis thereof, said member serving to resist the rotation of said assembly about said axis and to guide the same in its movement to and from the truck wheel.

3. In a railway truck, a frame, a brake hanger, a pivot on said frame for said hanger, a brake head carried by said hanger, and a resilient brake beam guard, guide, or support member depending from said frame in front of said pivot and engaging said brake head to maintain the desired angularity thereof in movement of the head towards andfrom the wheel.

4. In a railway truck, a frame, a brake hanger, a pivot on said frame for said hanger, a brake beam assembly carried on said hanger, a member for safeguarding and guiding said assembly to maintain the desired angularity of the brake shoe in its movement towards and from the wheels, and means slidably mounting said member on said frame.

5. In a railway truck, a frame, a brake hanger, a pivot on said frame for said hanger, a brake beam assembly carried on said hanger, a member for safeguarding and guiding said assembly to maintain the desired angularity of the brake shoe in its movement towards and from the wheels, and a member on said frame forwardly of said pivot and slidably mounting said member.

6. In a railway truck, a side frame, a bracket on said frame, a brake hanger, a pivot on said bracket for said hanger, a brake beam assembly supported along its axis by said hanger, and a guard, guide, orsupport member for said assembly depending from a point on said bracket in front of the vertical plane of the axis of said pivot and adapted to maintain the desired angularity of the brake shoe.

'7. In a railway truck, a side frame structure, an inside hung brake beam assembly including a hanger pivotally mountedon said frame structure, a member for guiding and safeguarding said assembly, and means on said frame structure forward of the pivotal mounting of the hanger on said frame structure for suspending said member, said assembly being pivotally engaged by said hanger and member so that it may adjust its angular position to the truck wheels.

8. In a railway truck, a frame part, a brake hanger bracket rigid therewith, a brake hanger,

a brake head and shoe pivotally carried by said hanger, a guiding and safeguarding yielding member depending from said bracket and engaging said head and shoe forwardly of the pivotal axis thereof, and elements separately securing said hanger and said member to said bracket.

9. In a railway truck, a side frame structure, a brake hanger, an element mounting said hanger on said frame structure, a brake beam assembly carried by said hanger, and a brake beam guard, guide, or support member of yielding material depending from a point on said frame structure located substantially directly forwardly of said element and independent thereof and engaging said assembly to guide the same in its movement towards and away from the truck wheel and to safeguard the same in case of hanger failure.

10. In a railway truck, a brake hanger bracket having a pivot for a brake hanger and a portion projecting inwardly from said pivot, and a brake beam guard, guide or support member carried by said portion.

11. In' a railway truck, a brake hanger bracket, a hanger pivoted on said bracket, a brake beam carried at its extremity by said hanger, and a brake beam guard, guide, or support carried by a portion of said bracket located inwardly of said hanger and cooperating with a portion of said beam located inwardly of said extremity thereof.

12. Structure as defined in claim 10 in which the brake beam guard, guide, or support is'normally disposed in a substantially vertical plane and supports the brake beam.

13. In a railway truck, a wheel, a side frame structure including a mounting for a brake hanger pivot, a hanger suspended therefrom, a'

brake beam assembly including a brake head and shoe supported by said hanger for application to said wheel, and a resilient member engaging a part of said assembly in front of the point of hanger support thereof to yieldingly maintain the desired angularity of said brake head and shoe relative to said wheel, said member being suspended from said structure at a point nearer the axis of said wheel than said pivot.

14. In a railway truck, a wheel, a side frame structure including a mounting for a brake hanger pivot, a hanger suspended therefrom, a brake beam assembly including a brake head and shoe supported by saidhanger for application to said wheel, and a resilient member engaging a part of said assembly in front of the point of hanger support thereof to yieldingly maintain the desired angularity of said brake head and shoe relative to said wheel, said member being suspended from said structure at a point between said pivot and the axis of said wheel.

15. In a railway truck, a wheel, a side frame structure including a mounting for a brake hanger pivot, a hanger suspended therefrom, a brake beam assemblyincluding a brake head and shoe supported by said hanger for application to said wheel, and a resilient member having its upper end mounted on said frame structure at a point between the vertical plane of the axis of said pivot and the vertical plane of the axis of said wheel and engaging said brake beam assembly between said hanger and said Wheel, the elements mounting said member on said frame structure being rigid with said frame to hold said member in position to safeguard said beam and to yieldingly maintain said brake head and shoe in desired angular position.

16. In a railway truck, a wheel, a side frame including bracket structure, a brake guard, guide or safety resilient member and a hanger suspended from said bracket structure, and a brake beam assembly carried by said hanger and movable forwardly to engage said wheel, said member engaging said bracket structure forwardly of the point of engagement thereof by said hanger and yieldingly thrusting said assembly towards its normal position spaced from said wheel.

1'7. In a railway truck, a wheel, a side frame including bracket structure, a brake guard, guide or safety resilient member and a hanger suspended from said bracket structure, and a brake beam assembly carried by said hanger and movable forwardly to engage said wheel, said member engaging said assembly and bracket structure forwardly of the point of engagement thereof by said hanger and yieldingly thrusting said assembly towards its normal position spaced from said wheel.

18. In a railway truck, a side frame part, a brake hanger, a brake assembly including a head and shoe pivotally connected to said hanger, a brake beam guiding and safeguarding member depending from said part and pivotally connected to said head and shoe at a point forwardly of the pivoting of said hanger thereto, and elements independently securing said hanger and said member to said part.

19. In a railway truck, a side frame, a bracket on said frame, a single pivot on said bracket, a single brake hanger on said pivot, a brake beam assembly supported by said hanger, elements on said bracket in front of the vertical plane of the axis of said pivot, and an auxiliary guard, guide, or support member mounted on said elements and engaging the forepart of said assembly for maintaining the desired angularity of the brake shoe.

EDWIN G. BUSSE.

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