US2346614A - Railway truck - Google Patents

Description

April 11, 1944; c RYDIN 2,346,614

. RAILWAY TRUCK I Filed May 28, 1941 2 Sheets-Sheet 1 4 3 INVENTOR.

C. N. RYDIN RAILWAY TRUCK April 11, 1944.

Filed May 28, .1941

2 Sheets-Sheet 2 INVENTOR. N @QUz,

Patented Apr. 11, 1944 TENT OFFICE 2,346,614 RAILWAY TRUCK Carl Norval Rydin, Chicago, Ill., assignor to American Steel Foundries, Chicago, 111., a corporation of New Jersey Application May 28, 1941, Serial No. 395,507

12 Claims.

My invention relates to railway car trucks and more particularly to a car truck having ride control means associated with the spaced guide columns of a side frame and a bolster end which is. supported between said columns.

An object of my invention is to design an energy absorbing device which may be readily associated with a bolster end and guide columns of a side frame to substantially prevent harmonic vibrations of the bolster supporting spring group.

My invention includes a spring plankless railway car truck wherein snubbing means are mounted outboard the side frame and include a friction shoe supported by each guide column and a friction surface supported on the adjacent portion of the bolster end, said shoe having engagement with the friction surface in a vertical plane lying substantially parallel to the longitudinal axis of the bolster.

A further object of my invention is to design a spring plankless railway car truck wherein cushioning means mounted outboard the side frame serve to maintain the bolster in squared relationship with the side frame.

In the drawings, Figure 1 is a fragmentary side elevation of a railway car truck embodying my invention.

Figure 2 is a top plan View of a portion of the structure shown in Figure 1.

Figure 3 is a fragmentary sectional view of the railway car truck shown in Figures 1 and 2, the section being taken substantially in a vertical transverse plane bisecting the car truck as indicated by the line 3-3 of Figure 1.

Figure 4 is a fragmentary sectional view taken substantially in a horizontal transverse plane as indicated by the line 4-4 of Figure 1.

Figure 5 is a fragmentary sectional view taken substantially in a vertical transverse plane through one of the guide columns as indicated by the line 5--5 of Figure 1.

Figures 6, 6A, and 6B show in detail the shoe supporting bracket used on the structure indicated in Figure 1, Figure 6 being a side elevation, Figure 6A being a top View, and Figure 63 being an end view.

The railway car truck generally indicated at 2 comprises a side frame 4 having a top compression member 6 and a bottom tension memher 8 merging at their ends in integral journal boxes (not shown) which accommodate the journal ends of supporting wheel and axle assemblies (not shown). Extending between the top and bottom-members 6 and 8 are spaced guide columns I0, I 8 defining with said members a central bolster opening [2 and the spaced window openings [3, l3. Beneath said bolster opening 12, the top web 14 of the tension member is widened to form a spring seat l6 upon which may be seated a spring group, diagrammatically indicated at 18, of any convenient arrangement. Projecting through said bolster opening I2 and seated on the top of the spring group I8 is an end 28 of the bolster 22, said bolster end having on each side inboard and outboard vertical guide lugs 24 and 26 with an intervening column engaging face complementary to the guide surface on the adjacent column It as at 28. The lower portion of each guide column It may be relieved at 30 to permit passage of the outboard guide lug 26 in assembling and dismantling of the bolster and side frame. A central vertical rib 32 reinforces the bolster end 28.

Outboard each column is supported a ride control or friction device. Each side wall 34 of the bolster is projected outward to form a vertical panel 35 which extends above and below the normal height of the side wall of the bolster end and which supports a friction surface 38 formed on a wear plate 40 secured to said panel 36 in any convenient manner as by welding. Each panel 33 is reinforced by horizontal triangular extensions 42 and 44 of the top and bottom walls 46 and 48 respectively of the bolster end. It will be apparent to those skilled in the art that while I have supported the friction surface 38 on an integral extension of the bolster end, I may also support said surface 38 by securing a bracket or other suitable means to the associated bolster end.

Each friction shoe 58, supported outboard the adjacent column 18, frictionally engages as at 52 the friction surface 38 in a vertical plane substantially parallel to the longitudinal axis of the bolster. Each friction shoe 50 is of rectangular shape and comprises a wall 54 presenting an outer surface for engagement at 52 with the friction surface 38 and a flange 58 extending continuously around the perimeter of said wall to form a cup-like structure. Centrally formed on the inner surface of the wall 54 is a stud 58 for positioning a pad 60 of any suitable resilient material, said pad having a face seated against the wall 54 and a recess accommodating said stud 58. The opposite face of said resilient pad abuts the vertical wall 62 of the shoe supporting bracket generally indicated at 64 and is positioned thereon by the central stud 66 on said wall 62 received within a complementary recess on said pad 60.

The shoe supporting bracket or carrier 64 is shown in detail in Figures 6, 6A, and 63 wherein it may be noted that the resilient pad 60 is supported on the vertical wall 62 within a pocketlike structure defined by top and bottom flanges 68, 68 and vertical ribs I0, 10 terminated short of the top and bottom flanges 68, 68. As best seen from a consideration of Figure 4, in assemblage, the perimetrical flange 56 receives therewithin the vertical ribs l0, 10 to prevent lateral displacement of said shoe 50 and as best seen in Figure 1 the top and bottom flanges 63, 68 externally overlap the upper portions of the perimetrical flange 56 to hold said shoe against vertical movement. At substantially right angles with the vertical wall 62 is a wall 12 perforated at l4, I l, said perforations being aligned with the openings l6, 16 in the adjacent guide column H) for securing the shoe carrier 66 to said column as by nut and bolt assemblies i8, 18. The bracket 64 is reinforced by top and bottom ribs 80, 80 and the somewhat smaller intermediate rib 82 extending between the vertical walls 12 and 62. 7 The beading 84 around each window opening is may be extended across each column II] as at 85 and 323 to reinforce said column and to define therebetween a seat on said column for the Wall 12 of the bracket.

It may be noted that the shoe carrier 64 with the resilient pad 68 and the shoe may be secured to the adjacent column l9 either before or after the bolster is assembled with the side frame. When assembled, each resilient member 60 is placed under initial compression and urges the friction shoe 56 into engagement with the friction surface 38 on the bolster end. It is apparent that because the shoe and friction surface 38 have engagement in a vertical plane, relative vertical movement of the bolster and side frame will not cause further compression of the resilient member and such relative movement will be resisted by substantially constant frictional absorption. Any tendency of the bolster to move out of squared relationship with the side frame will cause further "compression of the resilient members 653,60, thus setting up forces in the resilient members which will restore the bolster to its normal squared relationship.

It is to be understood that I do not wish to be limited by the exact embodiment of the device shown which is merely by way of illustration and not limitation as various and other forms of the device will, of course, be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In abolster, a bolster end having spaced side walls and top and bottom walls, inboard and outboard lugs on each side wall, said side walls being extended outward beyond said top and bottom walls to form panels supporting friction surfaces and said top and bottom walls comprising horizontal triangular flanges merging with said panels.

2. In a railway car truck, a side frame having :a bolster opening and spaced columns at opposite sides thereof, a bracket seat on each column defined by spaced horizontally disposed flanges, a bracket removably secured to each of said seats and comprising a plurality of flanges thereon, a friction shoe supported by each of said brackets and comprising a friction face on one side thereof and a recess on the opposite side thereof, a resilient pad positioned within said recess and under compression between said shoe and said bracket, certain of said flanges on said bracket being received within said recess and other of said flanges underlying and overlying respectively said shoe, and a bolster end received within said opening, resiliently supported from said frame, and supporting friction panels in engagement with the associated faces.

3. In a railway car truck, a side frame having a bolster opening and spaced columns at opposite sides thereof, a bracket seat on the outboard face of each column defined by spaced horizontally disposed flanges, a bracket removably secured to said seat, a friction shoe resiliently supported from each bracket and comprising a friction face, and a bolster end received within said opening, resiliently supported from said frame, and comprising friction panels in engagement with the associated faces. I

4. In a railway car truck, a side frame having a bolster opening and spaced columns, a bracket removably secured to each of said columns, a friction shoe resiliently supported from each bracket and comprising a recess, means on .said bracket received within said recess to. prevent relative lateral movement of said shoe: and said bracket, means on said bracket overlying and underlying said shoe to prevent relative vertical movement thereof, and a bolster accommodated between said columns .andresiliently supported from said frame, said bolster comprising friction panels in frictional engagement with said shoes.

5. In a bolster, a box-like structure having spaced side walls and top and bottom walls, inboard and outboard column guide lugs on each side wall, the side walls being extended outwardly beyond said top and bottom walls, friction surfaces on the extensions of said side walls, and substantially triangular flanges on said top and bottom walls merging with said extensions, said side walls being of substantially greater depth outboardly of said outboard lugs than inboardly thereof.

6. In a railway car truck of spring plankless type, a side frame having spaced columns and an intervening bolster opening, resilient means on said frame in said opening, a bolster supported from said means, said bolster having inboard and outboard guide lugs for engagement with each column to interlock said bolster therewith, a bracket seat on the outboard face of each column and defined by spaced substantially horizontal flanges thereon, brackets removably secured to respective seats, and a friction shoe resiliently supported from each bracket and in frictional engagement with a friction surface on said bolster.

7. In a railway car truck, a side frame having a bolster opening and spaced columns at opposite sides thereof, a bracket seat on the outboard face of at least one of said columns, said seat being defined by spaced substantially .horizontally disposed flanges, a bracket removably secured to said seat, a friction shoe resiliently supported from said bracket and comprising a friction face, and a bolster end received within said opening, resiliently supported from said frame, and comprising a friction panel in engagement With said face.

8. In a railway car truck, a side frame'having a bolster opening and spaced columns, a bracket removably secured to "each of said columns, a friction shoe resiliently supported 'from each bracket and comprising a recess, means on said bracket received within said recess to prevent relative lateral movement of said shoe and said bracket, means on said bracket overlying and underlying said shoe to prevent relative vertical movement thereof, a bolster accommodated between said columns and resiliently supported from said frame, said bolster comprising friction panels in frictional engagement with said shoes, and resilient means associated with each shoe, received within the recess therein, and compressed between said shoe and the associated bracket to urge said shoe into frictional engagement at all times with the associated friction panel.

9. In a railway car truck, a side frame having a bolster opening and spaced columns at opposite sides thereof, a bracket seat on the out-- board face of each column and defined by spaced substantially horizontally disposed flanges thereon, a bracket removably secured to each of said seats and comprising a plurality of flanges thereon, a friction shoe supported by each of said brackets and comprising a friction face on one side thereof and a recess on the opposite side thereof, resilient means positioned within said recess and under compression between said shoe and said bracket, certain of said flanges on said bracket being received Within said recess and other of said flanges underlying and overlying, respectively, said shoe, and a bolster end received within said opening, resiliently supported from said frame, and supporting friction panels in frictional engagement at all times with the associated faces.

10. In a railway car truck, a side frame having a bolster opening and spaced columns at opposite sides thereof, a bracket seat on the outboard face of each column defined by spaced substantially horizontally disposed flanges, a bracket removably secured to said seat, a bolster end received within said opening, resiliently supported from said frame, and comprising friction panels, and friction means mounted on said brackets for engagement with respective panels.

11. In a railway car truck, a side frame having spaced columns and an intervening bolster opening, a bracket seat on each column defined b-y spaced substantially horizontal flanges thereon, a bracket removably secured to said seat, a friction shoe resiliently supported from each bracket and comprising a friction face, and a bolster end received within said opening, resiliently supported from said frame, and comprising friction panels in frictional engagement at all times with the associated faces.

12. In a railway car truck, a side frame having a bolster opening and spaced columns, a bracket secured to each of said columns, a friction shoe resiliently supported from each bracket and comprising a recess, means on said bracket received within said recess to prevent relative lateral movement of said shoe and said bracket. means on said bracket overlying and underlying said shoe to prevent relative vertical movement thereof, and a bolster accommodated between said columns and resiliently supported from said frame, said bolster comprising friction panels in frictional engagement with said shoes.

CARL NORVAL RYDIN.

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