US2467255A

US2467255A - Snubbed railway truck

Info

Publication number: US2467255A
Application number: US525721A
Authority: US
Inventors: Glenn F Couch
Original assignee: Symington Gould Co
Current assignee: Symington Gould Co
Priority date: 1944-03-09
Filing date: 1944-03-09
Publication date: 1949-04-12
Anticipated expiration: 1966-04-12

Description

April l2, 1949. G. F. coucH SNUBBED RAILWAY kTRUCK 2 'Sheets-Sheet l Filed March 9, 1944 M. aM

April 12, 1949. G. F. coucH 2,467,255

SNUBBED RAILWAY TRUCK Filed March 9., 1944 2 Sheets-Sheet 2 Patented Apr. 12, 1949 SNUBBED RAILWAY TRUCK Glenn F. Couch, Rochester, N. Y., assigner to Symington-Gould Corporation, Depew, N. Y., a corporation of Maryland Application March 9, 1944, Serial No. 525,721

21 Claims.

The invention pertains to improvements in a railway truck and more particularly in a type thereof wherein frictional forces control, in a snubbing manner, the action of resilient bolster supporting means.

An object of the invention is the provision of a removable member so associated with a bolster and side frame of a railway truck, that it may readily be removed to facilitate a quick wheel change operation.

Another object of the invention is to provide, in a railway truck, a movable member disposed outwardly of a side frame and urged toward columns of the side frame to effect a brushing or wiping action against the columns to thereby snub or control the action of bolster supporting springs.

A further object of the invention is to provide, in a quick wheel change railway truck, a movable `member spanning columns of a side frame outwardly thereof with resilient means connected to the movable member and so arranged that the resilient means may be further precompressed to relieve the movable member of the forces built up in the resilient means and facilitate the entire removal of the movable member from the truck assembly.

An added object of the invention is to provide a railway truck having both quick wheel change and snubbing features and which is of simple and durable construction, eil'icient operation, positive action and relatively few parts for the work accomplished.

These and other objects of the invention will become apparent from the succeeding description considered together with the accompanying drawings, the latter of which disclose an exemplified form of the invention and wherein:

Figure 1 is a partial side elevational and partial vertical sectional view of a railway truck illustrative of the present invention.

Figure 2 is a partial plan and partial irregular horizontal sectional view of the railway truck of of Figure 1 and is taken substantially along the lines 2-2 of Figure l looking in the direction of the arrows.

Figure 3 is a cross sectional view of the railway truck illustrating the present invention and is to be considered as taken along the lines 3-3 of Figure 1 looking in the directionof the arrows.

Figure 4 is a sectional view taken through a bolster removed from a side frame and showing some of its component parts in an abnormal position. i

Referring now in detail to the drawings,

wherein like reference characters designate like parts, the numeral I is employed to indicate, in a somewhat general manner, a railway truck of a form exemplary of the present invention and which. comprises a pair of transversely spaced side frames 2, only a portion of one of which is shown. The side frame is more or less of a design recognized at the present writing as standard in that it includes a top or upper compression member 3 spaced vertically from a lower or bottom tension member 4 both of which are joined intermediate their ends by transversely spaced guide columns 5 which dene a window or opening 6 therebetween. Each guide column preferably has a transverse web 1 terminating in or merging into transversely spaced inner and outer flanges 8 and 9, respectively, extending toward the associated end of the side frame away from the window or opening. Each column flange has a wear plate I0 welded or otherwise secured thereto to present inner and outer wear surfaces II and I2, respectively, which face away from the columns transversely of the truck. Occupying or positioned in the lower area of the side frame opening is a set or nest of springs or resilient means I3 seated upon a widened accommodating portion l4 of the tension member and desirably formed by symmetrically arranged all coil or helical springs I5.

A bolster I6 extending transversely of the truck intermediate the ends of the side frame, forms a load carrying member and has an extremity I I thereof occupying a portion of the upper limits of each bolster opening. The bolster desirably comprises a top wall I8 spaced vertically from a lower wall I9 and both of which extend for substantially the entire length of the bolster and are joined, integrally at or adjacent their transverse limits, by vertical side walls 20. The side walls lie in the close proximity to the column webs but are spaced therefrom a suflicent distance to permit a relatively free, vertical or service movement of the bolster. The bottom wall bears directly upon the nest of all coil springs, the latter of which form a resilient or yieldable support for the bolster to effect a relatively free easy riding truck. Positioning lugs 2| are formed integrally with the bolster bottom wall to lie in the proximity of the springs of the nest to retain them in a predetermined operable position.

Due to certain well recognized operating conditions to which a railway truck is subjected in service, the bolster supporting springs, if not otherwise arrested, will have set up therein synchronous vibrations, the latter of which will be detrimental and destructive to the truck structure and to the successful operation thereof. Means has been incorporated in the truck structure of the present invention toward the creation of frictional forces to thereby set up a snubbing action to damp out periodic, amplifying oscillations of the bolster supporting'springs. Towards the accomplish'ment'lof this p'i`1rpose,'therefore, there has been provided, outwardly from the bolster side walls and inwardly of the side frame adjacent each column, a lug 22 which overlies the associated column and carries, "throughthe medium of welds or any other n desired means, a

wear plate 23. Each wear yplatel''asy an-outward v/vh'iclr extends between .is formed integrally jacent to"anwouter` cornerthereof. Each -p'ost has an upperport-ion 26 'foriedas'a web, vertically disposed which, intermediate the' top and bottoin bolster uwalls, merges into a flower portionz'l'directed downwardly andinv'vardli7 :of lthe bolster sideV frame ,ori ofthe* ltruckvstructure. Reinforeing ach'po'st againstfstre'sses to which it will be 'subjected inv'srvicearea'pair of gussets or kneerbraces @longitudinally'spaced and mergwith the`brolster bottom wall` andthe free extremities'ofytlie'lownprtion 21. nEach post lower fport'io'n"has,` facingy inwardly oft the bolster ck structure, afdow-nwardly and, inwardly `pmgl or `extending -wedge face k'2li which definesipartiaJlyf-oe sidel of 'cawd'o'w onoperiing BIT located within the 'coinesof the bolster end. "'Ifhe 3j] frter'ds longitudinally of the truck,' p{er-peiidicu'larly'to4 the lside `frame column defined openingV or transversely'ofthe `bolster aridy projectsen'tie'ly through thebolster end at 1a jpositi'on\` removed from 'bult' in the proximity td, the rel ated: side aine Ic lurlns.

.7 Disposed within the 'bolster' window 3o is 'a shoe, or Ibridge 3 I'spariing l rV overlapping tlie"side frame' columns 'andCmpriSing aninteiriediate' or central portionfor .Connecting bar 32 Af nr'rri'ect`r`iy`a vertically disposed'web 33 having y-upperalnd 'low-er'.horizontal-'plates 34 and 35, respectively, frin/ed integrally therewith to presentlanl'corguraltion'injcross section. At each extremity of the'conri'ectig bar in the proximity 'or tigefppst," thelyvet 331desiabiydirectedftut- -tvardly ofv the [truck toward the post, as at 3B,Y to 'merge 'into a` sloping wearblocl`31 which visd'isposed' I'in` a i direction *lo'ng-itu'dinallyN of the truck. *Each* wear block carries'an outer sloping facce 38'ljextending 'downwardlyanid inwardly ofthe (truck `to"corr'espndJwith and "bear against the sopg wedge `face 29 'of an'associatd post. By fre'a's'onof 'the' Darticulardispsition of the sloping faces, the beam is arranged t tend to'move "a direction d'ownw-avrdlyand vinwardly of the truckjstructure `for the reasons to be hereinafter arene.,

Forming the extremities of the beam or bridge are a pair of spaced flanges or abutments 39 reentering the truck from the free ends of the wear blocks toward the side frame columns. The bridge flanges have ribs 40 in overlying, overlapping or tel'escoping relation to the post bottom portion to form an interlock between the bridgewandV bolster and therebyfguard against an unwarranted "or accidental Separation of the beam from the bolster. Each flange or abut- "ment presents an inwardly facing vertical sur- 'umnbuteVsurface I2 so that frictonal forces will at-a-llftimes b ej'created also on the rubbing *surfaces Y4I Aand I2 during a vertical service movement of the bolster.

This vpost and bridge arrangement also maintains the surfaces 24 and I Il in"'constantcntact and, as will be noted from thelfo'regoing, yany vertical movement of the bolster in response to service loads, will cause a friction creating brushing or sweeping action of thebols'ter carried surfaces 24v and 4I alongthe side; frame surfaces? II and I2, respectively.

It will fur-therbe noted'f'r'om the'foregon'gfa'rd `the hereinafter described structureY and relationship between the various .truck components that thefrictionalfo'rces aremnot` varied v'by different loadsbeing applied to the bolster. Ay quick' wheel changeis leffected by' raising the'beam orbridge upwardly'A toward the top Ywall of'thebol'ster until the interlockingfeature of the'r'ibs 'andp'osts Als "removed,l at 'whichtme the bridge 'may bev/'ithfd'r'aw'n' easily v`from vthe lcollslter window 30 in 'fa direction longitudinally loifthe truck toward `eitherend of thefside frare. vThis upward movementofthe'bridg'e will lcause theV faces `4Ifto move" outwardly of the trckaway from theA co1- umn surfaces I2. lWhen the bridge' is thus/re- A'velffm tle'bolster it will' be Observed that l-40 'no "bstrctimwill be present tolpreverit a' rn-ovementor' the 'side frameeaway from the tolrer end.

l 'Means meteen provided in the railway truck of the present invention to r'esili'ently urge the beam' rbridge into 'intimate'contact with the ably cylindrical and convex in configuration.

Y means 52 which, being precom-pressed or under Yan initial compression, urges the lever downwardly about its cup extremity and the bridge, through the medium of the rocker, into wedging engagement with the bolster posts and side frame columns.

When the trluck structure is in an assembled relation as illustrated in Figures 1 through 3, it may be desired, as is the lcase during the life of a railway truck, to change the wheel and axle assemblies (not shown). As previously recited, this is effected by the removal of the bridge which spans the columns in overlying relation. However, the present construction contemplates maintaining the lever and spring assembled with the bolster duning the qui-ck wheel change operation and, accordingly, the top wall of the bolster is lprovided with an aperture 53 through which there extends a pair of pierced lugs or eyelets 54 upstanding through the plane of the top wall from the lever rocker. Normally, as shown in Figures 1 through 3, the holes 55 in the eyelets are in the plane of the bolster top wall so that when a quick wheel change is desired, a pinch bar or any other suitable instrument (not shown) is inserte-d into the bolster beneath the lever floor and, upon the application of proper forces to the pinch bar, the spring 52 will be further compressed to raise the holes, as shown most clearly in Figure 4, above the bolster top wall sufficiently to permit threading a bolt 56 through the holes to maintain the lever elevated away from the bridge,

From the foregoing description, considered together with the accompanying drawings, it will be noted that various changes and alterations may be made to the illustrated and described construction without departing from within the spirit of the invention and scope of the appended claims.

I claim:

1` In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end positioned in salid opening, surfaces in said bolster end sloping downwardly and inwardly of said truck, removable friction means having spaced surfaces cooperating with said sloping surfaces and arranged to span said columns to be in frictional engagement therewith, pivot means within said bolster associated with said friction means, and spring means acting between a top wall of said bolster and said pivot means for urging said friction means downwardly.

2. In a quick wheel change truck, a side frame having guide columns dening an opening therebetween, a bolster having an end positioned in said opening, surfaces carried by said bolster end sloping downwardly and inwardly of said truck, bridge means in bearing relation with said sloping surfaces and in frictional engagement with said columns, pivot means extending between said bridge means and bolster, and spring means acting between said pivot means and bolster.

3. In a quick Wheel change truck, a side frame having g-uide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, surfaces carried .by said bolster end outwardly of said side frame sloping downwardly and inwardly of said truck, means in bearing relation with said sloping surfaces and columns, means pivoted to said bolster and bearing against said rst named means, and spring means acting against said pivot means,

4. In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar sloping surfaces carried by said bolster outwardly of said side frame, removable means spanning and arranged to engage said columns and in bearing relation with sali-d sloping surfaces, nemovable pivot means carried by said bolster and bearing upon said spanning means, and spring means acting between said .bolster and pivot means.

5. In a quick Wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar sloping surfaces carried by said bolster outwardly of said side iframe, removable means spanning and arranged to engage said columns and in bearing relation with said sloping surfaces, removable pivot means carried .by said bolster and bearing upon said spanning means, spring means acting between said bolster and pivot means, and means on said pivot means for limiting movement of the latter toward said spanning means.

6. In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar sloping surfaces on said bolster directed downwardly and inwardly of said truck, means having spaced coplanar surfaces in engagement with said bolster sloping surfaces and at least one other surface in engagement with said columns, means 'bearing upon said rst named means, and spring means acting between said bolster and last named means.

7. In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar sloping surfaces directed downwardly and inwardly of said bolster, means having olppositely .facing spaced surfaces in engagement with said bolster surfaces and |columns, pivot means bearing upon said rst named means, and spring means acting between said bolster and last named means.

8. In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar sloping surfaces carried by said bolster and directed downwardly and inwardly of said truck, means having spaced surfaces in engagement with said spaced coplanar sloping surfaces and columns, lever means having one extremity bearing against said bolster inwardly thereof and another extremity bearing against said rst named means, and spring means acting between said bolster and said lever means.

9. In a quick wheel change truck, a side frame having guide columns defining an opening therebetween, a bolster having an end portion in said opening and arranged to be removed horizontally therefrom, spaced coplanar surfaces directed downwardly and inwardly of said bolster, span..

am een mingzmeans mating oppositelyztaeing spacedisurifacessinengagementmitlrsailblstensurfaeesand rcolumns,ileverzmeansrhavingzonesextremitylbear- .ing against said ibolster :inwardly :thereof fand aanother extremity ibeairing againstisatd ispanning smeans, `:and :sprlngnreans ibetween atop wall of said bolster andintemnediate the :ends ifof .ssaid kleiner iimeans.

LO. In:` a-:quick .vsrlrelr:clrangiatriml:,ansideframe having .guidezcolumnsi deinin'gtan-:opening atlreretbetween, fa ffbolsterilfraving .aneend-.portionziinrsa'rd iopeningaand; arranged..to.aberremouedzhorizontally therefrom, spaced1 slopin'gsurfacesdineoteddown- -wardly -fandiinwardly :of fsaid 'l'.bolster. *toward -esaid iside frame,ibridgeameansrextending tthronghesaid -bolster and :having routwardly tracing .surfaces `bearing against :sai-d `.sloping vsurfaces' :and :in- :wardly facing :surfaces :bearingeagainst fsaidwolumns, lever means rwithin @said inolster v-:lfiearirrg .fa-gainstz' said bridge vmeans, 'and spring) meansfor .urging-.-saidr lever meansftowardfsaid bridgemeans. e111. #Ilhe improvement s in fftruck-:bnisters tof *the @type comprising-:vertically spacedztopz'andl bottom .swallsjoinedby:sidewvallsitox'fornrfazboxeiikesstrnc- .ture -.-arranged to lbe rassociatediwith aan opening .in ia -side :.flralme :the '.'combination .of rigid "fpnsts :spaced l:outward-ly of said fside malls `toward aan end of .sa-id :bolsterfandoining.zsaidttop kand Ibot- .tonrfwalls coplanarsurfaces carried' byzsaidi posts dire cted downwardly zand.ttacingiinwaidlyofesad .-ibolstenand knee :braces ,joiningisaid postsztozone of sa-d .bolsterwval-ls.

12. The improvementzrin itnuck .bolsters-:of fat'he .typecomprisingverticallyrspaced topandxbottom .wallsijoined .by side wallsstoiformia-fboxiikestrncture :arranged to ube :.associatedewithf an lfopening =in..-ai-side frame; the combination .fof, vtrlg-id .iposts spaced outwardlyzof saidfside-wiailstowardzaniend roi :said bolster L. andrjoining: saidztop and'lfbottom walls, .copanar :sloping f'suriiaces ccarried Llfby :said .posts 1 directed .ldownwardly` and fa'cing izinwardly .of .sa-id bolster, :spaced iwebs "intermediate fsaid aside walls-connectingisaidftop'sand bottom walls, an'dl knee bracesfjoining said .poststtofpnefcdf said bolster wal-1s.

.i1-3. The improvementrinitnuckzblsters:of .the .type comprising' vertically; spa'cedctopand bottom :walls joined by side wallsto-iormziafrboxelikefstructurerarrangedto be associated with .fan :opening .in aside frame; -1thecombinationl:of, a'frigid'fpost spaced from saidssideiwallsgjoining.'saidtop@and .bottomwallsiandaf sloping-surfacefcarr-iedl byfrsaid post and facingzinwardly df=saidbolster,fsaiidesuriface abeing directed l downwardly vfand i'inwardly :efrfsai'clibo'lster 'and-a kneeibrace.j'oiningfsaidapost to one of said bolster'zwalls.

114. In a frallwayitruckldfatheftype having a sideframezmcluding vertical 'columnsfdening `an :opening `Ltherebetween :and a 'spring supported bolster .end positioned-within .fs-aid opening v`said ytruclfbeing characterized'by,'fposts` in saidbolster Inutwardly fof l' the l plane r of ffsai'dfifcolumns, sloping :surfaceston said posts,bridgemeansfspanningfsaid columns and "being finterlocked .with sai-'d posts, sloping surfaces on said fbridge-Tmeans bearing `against 4said post .sloping f'suraces, -'and spring lmeans 'for urging saidi'br-idge meansinto-engage- :ment fwith sai'dposts:and columns.

.15. In a railway l'truck f l'the type having a ,sidetframe including avertiealffcolumnsl defining "an opening "therebetween .fand -a jspring supported :bolster yendpositioned within said .-ppening, said truck :being characterizedfby; .posts *in 'saidibls'ter surfaces on :said vposts, libri-tige means #spanning 8 said columns and `vbeing interlocked 'with said sposta-sloping surfaces onisaid bridge means bear- :inga'gainst said postsloping'surfaces, and spring meanszremovedinwardly of said bolster'from said i Lbridge.meansiior urging .said bridge means into engagement iwithlsaifd posts :and columns.

i136. :In az'rai'lway truck of the type having-a side frame including 'vertical .columns dening -anfopeningtherebetween and a spring.` supported .310 .bolster eend-positioned within said opening, said itruekbeing characterized 'by,` posts in said bolster enutwardlyof the .plane of said'columns, sloping surfaces on said posts?, vbridge means spanning said 4columns .and being interlocked with -said p @postsgsloping surfaces on said bridge meansbearting l*against said posts sloping surfaces, spring meansffor urging saidbridge means into engage- .rment 4.with said posts and columns, and means :'fnrmaintaining said spring means assembled with ugo saidbolsterwhile relieving said bridgemeans of theaction'of said'spring means for facilitating itherremoval oi saidfbridge means.

517. fIn-a'railway truck o'f the typefhaving aside iframe inclulding vertical columns defining an zopening 'therebetween and a spring supported bolster end positioned within said opening, said truckbeing-characterized by, a 'post extending between top and bottom'walls of said bolster and -positioned outwardly of said sideframe, a sloping 30.;surface on said post beingfdirected downwardly vandfinwardly of said bolster, means outwardly yolfsaidside frame having asloping surface bearf'ingagainst said post surface,-spaced surfaces `on said'rstnamed means in frictional engagement :fzwith said columns, means etxending longi- .'.tu'dinally of 'said bolster and 'bearing upon said lfirstrnamed means, and spring means'acting be- '.tween said bolster and said-longitudinal extending means.

I18. 'In a railway truck of the type having a 'sideirarne including vertical columns defining A'lan'."opening therebetween and' aspring supported ibolster'end positioned within said opening, said truc'k-being 'characterized by, a postextending :between top =an'dlbottomwalls of said bolster and positioned outwardly of said side frame, a sloping surface on said post being directed downwardly `'andinwardly of said bolster, means outwardly ofrsaidrsideiframe having afsloping surface bearvingagainst said post surf-ace, spaced surfaces on 'saidlrst named'means in frictional engagement with said columns, means extending longitudinally-of said bolster and'bearing upon said rst named meansvertically acting spring means be- 1tween saidbolster and said llongitudinally extending'ImeanS, andmeans on isaid longitudinally extending-means for temporarily'holding the latter f-awayfrom said rst named-means.

19. AIn a `railway truck of thetype 'havinga side frame including vertical -columns dening ianopening therebetween and a spring supported 'bolster end 'positionedwithin Ysaid opening, said `truck being characterized by, a post extending Y. 'between top and bottom walls o'f said bolster and r'positioned `outwardly of said side'frame, a sloping surface on saidpost .being directed down- -wardly and inwardly `of said bolster, upstanding means withinsaid bolster and spaced from said .postmeans disposedoutwardly of said side frame and having inner and outer facing surfaces, said inner surfaces. frictionally engagingfsaid columns and'said outer surface sloping to correspond with Vand *engage said post surface, .means pivotally mounted Yon :,said' upstanding meansiand resting uponsaidoutwardly disposed'means, and spring fro means acting between said bolster and pivotally mounted means.

20. In a railway truck of the type having a side frame including vertical columns defining an opening therebetween and a spring supported bolster end positioned Within said opening, said truck being characterized by, a post extending between top and bottom walls of said bolster and positioned outwardly of said side frame, a sloping surface on said post being directed downwardly and inwardly of said bolster, upstanding means within said bolster and spaced from said post, means disposed outwardly of said side frame and having inner and outer facing surfaces, said inner surfaces frictionally engaging said columns and said outer surface sloping to correspond with and engage said post surface, means pivotally mounted on said upstanding means and resting upon said outwardly disposed means, vertically spaced spring seats on said bolster and pivotally mounted means, and a coil spring bearing against said spring seats.

21. In a railway truck of the type having a side rarne including vertical columns defining an GLENN F. CO'UCH.

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

UNITED STATES PATENTS Number Name Date 1,763,221 Clasen June-10, 193()i 1,985,469 Symington Dec. 25, 1934; 2,180,900 Goodwin Nov. 21, 1939 2,255,960 Barrows Sept. 16, 1941 2,317,352 Bachman Apr. 27, 1943