US2419473A - Railway truck structure and method of assembling and disassembling the same - Google Patents

Description

l 2,419,473 OF ASSEMBLING 3 Sheets-Sheet 1 HG. l.

J. c. TRAVILLA, .JR

Filed April 2s, 1944 AND DISASSEMBLING THE SAME RAILWAY TRUCK STRUCTURE AND METHOD April 22,

i .Y i D 3 Sheets-Sheet 2 Ji C. TRAVILLA, JR RAILWAY TRUCK STRUCTURE AND METHOD OF ASSEMBLING ANDDISASSEMBLING THE SAME Filed April 26. 1944 FIG. 3.

I April 22, '1947.

FIGS

` INVENTOR-l JAMES C. TRAVILLA JR.

le J;

FIGA.

TTORNEY April 22, 1947.

J. c. TRAVILLA, JR 2,419,473 RAILWAY TRUCK STRUCTURE AND METHOD OF ASSEMBLING AND DISASSEMBLING THE SAME Filed April ze, 1944 3 Sheets-She-et 3 FIG] FIGS.

INVENTO'R; JAMES CTRAVILLA JR. BYQL? M ATTORNEY Patented pr. 22, 1947 RAILWAY TRUCK STRUCTURE AND'Y METHODr OF ASSEMBLING AND DIS- ASSEMBL'ING THE SAMEA James C. rravilla, Jr., Swarthrrmre,4 Pa., assignorV tov GeneralA Steel CastingsCorpcration, Granite City, Ill., a corporationeofv Delaware' Application April'26, 1944, SerialvNo-i 532,710.

12 Claims.

The. invention relates to.- railway'A rollingl stock, and: more particularly to, railway trucks of-tlne typein which; the load-supporting bolsteris supported; n; springs. positioned, near the opposite ends of the bolster and the loads on the springs are;equalized by leversextending across the truck so'. asa tofstabilize the vertical movements of the oppnslte ,endsof vthe bolster, as disclosed in J. C. Travilla, Jr., andE. C., Jackson Patent 2,284,695, issueddune 2,; 1942. Thepresent invention relatestof the: construction of such stabilizing levers and associated-.parts Vand the method of assemblin-grand.y disassembling, them.

The main objectV oi,the in-vention is to facilitate; the; assembly andf disassembly of the parts, and this object is attained by arranging the parts andztheirassembly so' that the .bolster springscan b'e -Compressed independently of the stabilizing lever and; thel elements 1 supporting the same, whereby; thealever and: elements may be relieved cil; their.floadg.andv'manipulated independently of thesprnes.

This general objectwandv other detail objects as will appear from: the following description are attained by the structure illustrated in the accompan-ying; drawings, -inwhich- Figurefl; is a top- View of a;truckof the type refer-redljto. Pa-rtsoi the structure are broken away toV permit thedrawing ftoibe* made` to a larger scale.

Figure-Zisinpart a-.side elevation and in part a1.-.lQngi11ld-inal vertical section taken onV the line 2r-2;of'Figure-=1.

Figure 31-is a-xtransverse vertical. section taken ontheline 3-3 of Figure 1'.

Figure 4isa detail top. view of one endv of one of thefstabilizing levers.

Figure; 5` isa detail vertical section takenf on the.line.5--5,of` Figure 4 and showing associated parts;y

Figurer.: is a` diagrammatic' Viewr `corresponding.-generally-to-Figure but showing the parts im .the positiony assumed during the operation of applyingor'removing a bolster springer stabilizinglever to orfrom the other truck: parts.

Figure,` '7 isfasimilar'diagrammatic View illustratinge af .differentoperation of applying or removing` al bolster spring. andA stabilizing lever;

Figure 8.f-is-a` diagrammatic view'illustrati'ng another'operation of-'applying, orremoving, the bolster.,` springs and stabilizing levers to or from the bolster while-the bolster is disassembled from the other truck parts.

Figurefil is a. diagrammatic View lookingat right angles .to Figure 8.`

Thertruck includes spaced axles.` I` with wheels 2; rjournal boxes.carryingvequalizersll on. which are. mounted-the: truck-r` springs- 5- which carry the truck` frame; 6'.v Preferably, the truck isz of the lateralymotion-bolster typeand has-pairs of swing hangers'iiandv.l I1 pivotally suspendedirom the framefby pins, Pat kopposite sides of the truck, the hangers `carrying cross. bars /9 and lsfrespectively; Thefbolster 8l extendstransversely of the trucley over-cross lbars `9 and |91 and below frame wheel-piecesb.v Stabilizingalevers I0 and 20 are arrangedsubstantiallyend tov end transversely of the truck and they arefulcrumed intermediate their ends tothe'bolsterfby-r pins `ortie rods Il and-2l respectively.r Theinner-endsof levers I0 and.4 20; are interconnected by` links l I2 andV Ybolts l'3,:,23. The outer end of each lever is forked to prox/'idev a. recess lfandthe underside-of the lever at each: side of recess I3 isf grooved-v at Rfto-rest upcn-.one-of.thecorresponding cross barst); 19. Aseat memberf lli; 24 Ais' mounted upon. the outer endr of. eachlever.- IG, 2li and for-ms aseat for one or-more bolster-supporting springs- I5-and 25 respectively. Preferably, rubber blocks K, each havingsteel 'top anclbottomplates, tot which the rubber isfvulcanized, arev interposed between the lever and the. spring seat.v Theseblocks accom--y modate the vrelative-tilting; ofthe spring seat 4.and the-lever. However, if desired, the f springI seat mayrest directly on the endof the lever,` andthe parts 4'may be provided with concavo-convex Y' interengagingv surfaces as shown .in Figure 8 of 'I'ravillai and JacksonY Patent. 2,284,695; issued June 2, 1942.

'I-he-vehicleebody B issupportedmainly on. the bolstercenterrplate-'IG but body Bl and bolster 8 are .provided with cooperating-1 side bearings S and S respectively tov take Y afporti0n offthe'body load when Ythebody.v` tilts. The upwardly facing truck .side bearings Sv areimmediatelyfabove the corresponding downwardly facing portion ofthe bolster' forming seats for bolster supporting springs: 15g-and 25. Theivehicle body,v thebolster;l

sion and the holes for the fulcruming pins I I, 2I

and, likely, connection pins I3, 23 must be forced into alignment to accommodate the insertion and removal of the pins.

In the present construction, the outer end 'of each lever I9, 29 is provided with a central recess or passage I8, and each spring seat I4, 24 spans the space between the forked ends of the lever and is provided with a depending boss I4a, 24d which may be projected through recess I8. This makes it possible to compress springs I5, 2-5 without pressure on the levers I0, 2D and their pins II, I3, 2l and23.

YThe assembling and disassembling of the parts may be performed in various ways, some of which will be described below as illustrative. For example, if the truck is completed, as shown in Figures 1-3, and it is desired to remove levers Ill, 29 or springs I5, 25, pin 23 may be withdrawn first (since there is no load on this pin when the parts are in their normal position), then jacks 30 (Figure 6) may be placed under the body bolster or the car side sills or the car end sill and may be raised (the truck and body bolsters being held together by the center pin C) until the top of the truck bolster 3 engages the underside of the truck frame wheel pieces 6b. Then a jack 3I may be placed under one of the levers, 29 for example, and raised, compressing the adjacent spring 25 so as to take the load off of cross bar I9, which may be swung outwardly to clear the end of lever 20, and removed and a block 32 applied to the projection 24a depending from spring seat 24, the upper portion of the block extending through the recess I8 in the lever. Then jack 3I may be lowered until lever 20 is relieved of its load, whereupon pin'2I may be readily removed and the lever detached from the bolster. Jacks 30 may be raised further to permit spring 25 to expand to its free height, whereupon it may be removed. (Another extended jack could be used in place of block 32, and the lowering of such jack would render it unnecessary to further elevate jacks 39 as described.) Cross bar 9, lever III and spring I may be removed similarly. All the parts may be reassembled by reversing the order of the steps described above.

Another operation for removing the levers and bolster springs may follow the initial steps described above but without first removing pin 23. After the bolster is supported from the center pin and jack 3l has relieved cross bar I9 of its load, the cross bar is swung out from under lever 20, and jack 3l may be lowered, but the downward movement of lever 29 under the thrust of spring 25 will be limited by the connection of the inner end of the lever to lever I0 and the support of the outer end of the latter by cross bar 9. Hence jack 3I may be disengaged from lever 20 and may be shifted to the position in which block 32 is indicated where it may project through the recess I8 in the end of lever 20 and may be elevated to relieve lever 29 of the pressure of bolster spring 25, whereupon pins 2I and 23 may be readily removed and lever 20 dropped from the assembly. Thereafter lever I0 may be removed by use of jack 3| and block 32 as described in the preceding paragraph. Obviously, lever I9 may single jack (see Figure 7).

4 be first removed, independently of lever 20, in the same manner lever 29 is removed as described herein. The operation or operations may be reversed for assembling the springs and levers with the bolster.

If a'plurality of jacks are not available to operate as described above, it is possible to disassemble and reassemble the parts by use of a The single jack 33 may be placed under lever 2B and elevated until vthe bolster has been lifted an amount exceeding the distance between the free height and the load height of the bolster springs. (During this movement, the bolster will have engaged the underside of the frame wheel pieces and the parts will be in the relative positions shown.) Then the car body may be supported by blocks L under the adjacent end sill or side sills similar to the supports afforded by jacks 30 (Figure `6) and a block 34 placed between the inner end of lever I9 and rib 8a on the bolster. This block will keep the bolster springs compressed to their normal loaded height irrespective of jack 33. Then jack 33 may be lowered and both cross bars 9 and I9 will be relieved of their load and bar I9 may be swung outwardly to clear the outer ends of lever 29 and may be removed or the entire swing hanger assembly may be detached by removing the associated swing hanger pins P. Then the jack may be shifted to the position indicated in broken lines at 33a where it projects through the recess I8 in the end of lever 20 and may be extended to relieve the lever of the pressure of bolster spring 25, whereupon pins 2I and 23 may be readily removed and lever 20 dropped from the assembly.

Then the jack may be lowered, thus allowing spring 25 to expand to its free height when it may be removed. The other bolster spring I'5 remains compressed due to block 34. After removing bar 9, which is free of load as explained above, the jack may be placed under the seat of spring I5 andv raised to take the pressure of the spring off of lever I9 when its fulcrum pin I I may be removed and the lever and block 34 may be dropped. Then the jack may be lowered until spring I5 is expanded to its free length when the jack and the spring may be removed. The parts may be assembled in like manner but with the operations in reverse order.

If the truck is to be assembled, or disassembled, independently of the car body as, for example, in the plant where the truck is manufactured, or in a car repair shop or other place with suitable equipment, as referred to below, the operation may be carried out by inverting the bolster 8 and resting it upon suitable supports 49, as shown in Figure 8, where it will be elevated from the floor. Then the springs I5 and 25 may be placed on the spring-engaging portions of the bolster. Then the spring seats I4 and 24 may be placed upon the springs. Then the blocks 4I may be placed upon the projections I4a and 24a. of the spring seats and a beam 42 may be placed upon blocks 4I. This beam may be moved downwardly to compress springs I5 and 25 by lowering a weight from an overhead crane or like tool, or by the ram of a hydraulic press, or a yoke comprising elements 43, 44 and 45 may be applied to the assembly, as shown in Figure 9, and a jack 46 used as indicated to force beam 42 downwardly, thus compressing springs I5 and 25. Then levers I0 and 20, with their pins II, 2|, I3 and 23, may be assembled with the bolster and a block 4l placed between lever I0 and the opposing rib.

April 22, 1947. F B, w' ox 2,419,414

vAPPARATUS Fon TAKING PHOTOGRAPHS Filed Aug; s, 1942 8 sheets-sheet 1 JedQ/fm Wilcox

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