US2590360A - Railway truck - Google Patents

Description

' D. s. BARROWS March 25, 1952 RAILWAY TRUCK 2 SHEETS-SHEET 1 Filed Nov. 23, 1945 3 Swim pawdfifzmpw D. S. BARROWS RAILWAY TRUCK March 25, 1952 2 SHEETS-SHEET 2 Filed Nov. 23, 1945 awe/whom i/S WW Patented Mar; 25, 1952 UNITED STATES PATENT," OFFICE;-

RAILWAY TRUCK" Donald S.- Barrows,- RochestelgNi Y., assignor to; The Symington-Gould Corporation, Depew, N." Y., a corporation of Maryland Application November 23, 1945, Serial-No. 630,-230

Thisinvention pertains to a railway truck and more particularly to a'type thereofwherein a side frame and journal box are arrangedgfor relative movement.

An object ofthe'invention is theprovision of an improved railway truck whereina side frame and journal box have a relative verticalmovement checked or controlled-by azbuilt in snubbing device.

Another object of the invention is the provision, in azrailwaytruck, of a snubbingdevice so arranged and constructed as to control both vertical and transverse relative movements between a side frame and a journal box.

A further objector the invention is to provide a friction device which is built into a journal box and so arrangedas to engage frictionally a side frame during a'vertical movement of the latter.

An added object of the invention is to provide a snubbing device between ajourn'al box and" vide a snubbing device at a journal box-sideframe juncture with the snubbing device and side frame being so arranged and constructed as to facilitate assembly of the components herein above mentioned.

The: above as well as numerous other objects of the invention will become apparent from the succeeding description when considered in connection with the accompanying drawings; the latter of which discloses a species of the inven tion and wherein:

Figure l is a partial front elevational view and a partial vertical sectional view of a railway truck exemplary of this invention.

Figure 2 is a partial plan and partial horizontal sectional view of the railway truck shown in Figure -1 and is taken along the lines 2-2 thereof looking in a direction indicated by the arrows.

of the drawings wherein like referencecharac v ters indicate like. parts; the reference character] is employed to indicate,yin a somewhatgeneral.

manner, a railway'truck, exemplaryof the present invention with particular reference to a journal box mounting thereof. dicated, only a portion of the improved railway truck is illustratedin the drawings, since 1116:1111

disclosed portion may-be of any conventional dee sign andyby. Way of further explanation, the; dis; 4 closed part oithe truck is characteristic of only one ofithe four corners of the;truck; as willbe;

clearly understood by those skilled in the particu larart to. which thisinvention appertains.

The :railwayztruck generally comprises a side frame 2 having. a compression member3 fQ med by a top web: 4 and transversely spaced, -depend ing flanges 5 anda tension member 6 also of in:-

therebeyond as an integral design to-the extrem ity of'theside frame and thus form what might be considered as a receptacle 9 with the tension member web extending substantially horizontally in lower spaced relation to the compression memberweb;

The receptacle 9 is formed in part by "horizon: tallyspacedjaws, pedestals or column In which open downward and toward-one another to de fine'therebetween an opening ll extending: trans; versely of the side frame for the accommodation v or reception of a journal box I2. Each jaw-issub- 'stantially of Urshape or design in horizontal section, to thereby :present an inboardorinner flange or wall l3 and an outboard orouter flange or wall M'both' of whichare joined adjacent a free or trailing edge 'by a rear or connecting;

wall I5.- 1

The journal box l2 may be of a type to accom modate a plainbearingor, if preferred,of a'type to accommodate a roller bearing, since the-;particular typeof bearing encased by the journal box may be'optional just so long; as the box and the side frame are arranged as hereinafter set, forthfor relative movement therebetween. In

the instant structure, the journal box, at a loca-, tion below the center line of: an axle indicated by the diagrammatic line A- -A in Figure 3,,is; provided with; opp sitely disposed -or;hori,zontall3t directed shelves ,or rests l6 ,which.;-extend into the pedestalorcolumnforming jaws. Reinforcingribs l1 underlie ;orfdepend fromgthe journal'- box proper and rests to thereby strengthen-these i As hereinabove in: M

elements against forces to which they will be subjected in service. As previously indicated, the journal box and side frame are arranged for relative movement therebetween and one of these movements is in a vertical direction. 'For the accomplishment of this relative vertical movement there is provided between the side frame and journal box a pair of resilient, load carrying, spring means 18 with each means characterized by a double coil or helical spring l9. Each double coil spring is positioned within the confines of a related jaw to extend in a vertical direction substantially or normally parallel to an associated side wall 20 of the journal box and has an upper preferably flat extremity 2i bearing against a suitable depression or top spring seat 22, the latter of which is formed on the web of the tension member. While these latter mentioned spring seats are shown and described as being formed on the tension member extension they may equally as well be formed on the compression member web with suitable apertures provided in the tension member web for the passage therethrough. This alternate or suggested structure may be employed if it is desired to utilize spring means of longer travel than that illustrated in the drawing.

To add to the flexibility of the railway truck and thus compensate for irregularities in the supporting surface of the rails the journal box is arranged to move in a direction transversely of the side frame or railway truck. The limits within which the journal box may move transversely are determined by the clearance or space between the free or abutment forming outer edges of the column inboard and outboard walls or flanges designated by the reference character 23 and guiding lugs 24 outstanding from the side walls of the journal box. The ultimate transverse movement of the journal box is clearly illustrated in Figure 4 of the drawings and reference is hereby made thereto for a characterization of the above described movement or displacement of the journal box from normal position.

Since the journal box is capable of transverse movement inwardly and outwardly of the truck, means has been provided in the journal box mounting to afford a rocking action between the spring means and shelves or rests. This latter referred to means is characterized by a spring plate 25 interposed between the lower extremity of-a spring means and a subjacent shelf. Each spring plate is provided with a lower, convex or transversely curved surface 26 (see Figure 3) which bears upon a plane upper surface 21 of a related rest so that a rocking movement will be effected between the lower extremities of the spring means and shelves. By now referring back to the structural relationship between the upper extremities of the coil springs and side frame it will be recalled that a surface contact exists at this particular juncture. The spring means, and this designation at this time is inclusive of the spring plate, is so related to or arranged with the side frame and journal box that as the journal box is moved in a transverse direction the coil springs will become distorted to thus build up abnormal stresses in the coil springs. As is commonly known it is, by its inherent characteristics, the nature of a distorted resilient element to return to its normal position and thus the abnormal stresses built up in the spring means will tend to urge or return the journal box to its normal or centralized 4 position relative to the side frame as indicated in Figures 1 to 3 in the drawings.

The spring plates are interlocked with the coil springs and shelves by means of oppositely extending studs 28 to thus retain the lower extremities of the spring means in a predetermined position.

With all the relative movements provided for between the side frame and journal box, it is believed essential that some means for the control of these movements be incorporated in the structure to avoid or circumvent the derailment of the truck. With this thought therefore uppermost in mind, an effective and positive friction creating means, commonly and hereinafter convenienty termed a friction or snubbing means, is built into the structure under immediate consideration. The friction means generally designated by the reference character 29 are disposed at each side of the journal box and each friction means is confined, against a relative vertical movement with respect to the journal box, in an open sided housing 30; the latter of which is formed in part by vertically spaced outstanding ledges or upper and lower lugs 3|. The ledges extend horizontally from the side walls of the journal box into the side frame columns with sufiicient clearance thereabout to avoid interference between the ledges and side frame columns throughout the entire range of relative movement therebetween. The ledges are positioned intermediate the height of the coil springs as illustrated and are of such extent as to terminate short of the coil springs. A Wear plate 32 is welded or otherwise secured to each journal box side for the purpose to be hereinafter made apparent and thus each housing is formed, at least in part, by the vertically spaced ledges and an interposed vertically and transversely disposed wear plate. Each housing therefore is preferably formed, so far as the journal box is concerned, so as to open longitudinally of the side frame away from the journal box and also transversely of the truck.

The leading or free portion of each inboard and outboard column flange is, for at least a part of its vertical extent, flared or inclined as at 33; the inboard flange being flared inwardly of the truck and the outboard flange being flared outwardly of the truck. These flared portions present sloping or inclined surfaces 34 which have wear plates or rubbing plates 35 secured thereto by any desired manner, method or fashion so that, in effect, the rubbing plates may be, if desired, also considered as portions of the housings 39 or at least defining the lateral or transverse limits of the housings.

Disposed or confined within each housing is a pair of preferably counterpart wedges or shoes 36. Each shoe desirably comprise a sloping or inclined or rubbing surface 31 arranged to bear constantly against a correspondingly disposed surface 38 of a related rubbing plate. The shoes are of such vertical extent that they remain substantially stationary with respect to the journal box during a relative Vertical movement between the side frame and journal box since they are held so by means of the overlying or telescoping ledges. Accordingly, any relative vertical movement between the journal box and side frame is definitely and positively controlled by the creation of frictional forces on the mated movable surfaces 37 and 38 which disturb the vibrations of the coil springs I8. The shoes of each pair are urged transversely of the truck by masao any type or; compressibleor resilient means which;

is characterized; in the accompanying drawings,

by a'single 'coil or helical compression spring-39 andthus'the surfaces 37 and 38 are at all times maintainedin intimate contact with one another. At thejpresent writing it is believed necessary to provide only a single compression spring acting transversely of the truck and disposed intermediate the height of'each pair ofshoes but if desired, aswill-be appreciated, two or more springsor any type' of resilient means may be here employed Just so long as the shoes of each pair arepthrough the; action of the interposed resilient means, urged in a directionaway from one another. A recess 40 -is provided in'each shoe for the reception of-an extremity of the compression spring I to"therebymaintainthelatter in an operative ive" Disposed at an angle tothe inclined surface 31 of 'each shoe is atransverse and vertical brushing surface 4| which, through the means of the inclined surfaces 31 and 38, as well as the action of the compression spring, is at all times maintained in intimate contact with a plane vertical andtransverse 'orouter surface 12 of a related wearxplata. By reason of the particularly illustrated and described arrangement and construction,it 'willbe noted that the journal box is free tomove :transversely of the truck without disjournal box there is no transverse vertical angling movement between the journal box and axle" and in such instances some provisions shOllld--be made in thejournal box-snubbermeans-side frame connection to compensate for such" angling" movement. The structure under consideration has incorporated therein such provisions'and in this regard reference is made to the upperandlower end surfaces 43 of the shoes.

These'surfaces are desirably cylindrical, crowned; arcuate or convex and arearranged to contact flat'or plane'surfaces 44 on ledges 3| so that the journal :b'ox mayfreely tilt 'or angle in a transverse-vertical direction without disturbing the relationship between the surfaces M and t2 and the; surfaces 31 and 38.

Meanshas been provided in the construction tomaintain the shoes and compression springs in a somewhat assembled relation preparatory to assembling these elements with the side frame and journal box as well as prevent these elements I from exploding or in other words flying apart uponawremoval of the side frame from the journal-box andsupporting springs. Toward this'endtherefore, each shoe is provided with counterbores 45 in vertical alignment with the axis of the compression spring with horizontally aligned counterbores accommodating bolts or anysuch-holding means 46 the latter of which connect the shoes ofa pair, The effective length of each bolt is'such that the shoes are permitted a movement away from one another bya distance atiinleast greater than the -horizontaldiStalI-1G6-75 between the inclined "relatedsurfaces- 38 so as to afford a free serviceymovement of the shoes- Rubber or anyresilient bushings 41 are disposed in the counterbores toencompass the stems 48 of the bolts and functionas anti-rattling means;

Means has been provided in-the construction to further facilitate anassemblyof the friction means with the journal boxand side frame-and toward the accomplishment-of this end each friction shoe, at i or near the juncture of the inclined surface 38 and the curved, arcuateor crowned -surfaces,-is= provided 'with a beveled surface 49: The side frame column inboard andoutboard walls are provided' wi-th beveled sur-- faces 56 of desirably the same or-similar-inclination as the shoe surfaces 49'(see Figure 3).

In the process of assembly the journal box has, associated :with-each housing thereof, a nest of friction means each inclusive of a pairof shoes, interposed springand tiebolts. The 1 coil springs!!! with their spring-pIateS-ZS are then mounted on the shelves 'or rests l6 and the side frame .islowered down oversthis describedassemblage untilithe side frame (beveled surfaces 5!] strike and move alongithe shoe beveled sur-= faces 49 at which time the shoes will be'urge'd. toward one another until, upon a continued downward movement of the side frame," thecomponents of the structure will assume a normal relation as illustrated in Figures-1 and 3 of the drawings.

From the above it will be noted that various changes and alterations maybe made to,-the il-- lustrated' and described species of the invention without departing from the spirit of the invention and the scope of the appended claims.

I claim:

1. In a railway truck: of the type wherein a side frame and a load carryingmember are arranged for relative vertical movement, the comframe supporting springs carried by said journal box adjacent each side thereof, a longitudinally opening housing on each side of said journal box, and snubbing means within each housing for frictionally engaging said side frame and controlling the actionof said supporting springs.

3. In a railway truck of the type wherein a side frame and journal box are arranged for relative vertical and transverse movements, the combination of side frame supporting springs carried by said journal box adjacent each side thereof, friction means carried by sides of said journal box and arranged to move vertically therewith to engage frictionally said side frame and snub said vertical movement, said journal box being arranged to move transversely relative to said friction means and frictionally engaged thereby to snub said transverse movement.

' 4. In a railway truck of the type wherein a side frame and journal box-are arranged for relative vertical movement, the combination-of;- side--frame--supporting springs carriedhy said journal box, a housing formed in side walls of said journal box, and friction means acting longitudinally of said truck and associated with said housing; said friction means and housing being so arranged and constructed that a tilting action of the journal box transversely of said truck is free from interference.

5. In a railway truck of the character having a relatively movable side frame and journal box, the combination of, supporting coil springs between said journal box and side frame, open sided housings formed on the sides of said journal box, and friction means within said housings; said friction means being arranged to act longitudinally of said truck through openings in said housings to engage frictionally said side frame.

6. In a rail-way truck of the type having a side frame and journal box arranged, for relative vertical and transverse movements, the combination of, supporting coil springs between said journal box and side frame, a housing formed on a side wall of said journal box, said housing having vertically closed ends and sides opening horizontally in a plurality of directions, and spring-pressed friction creating means within said housing, said means being so arranged and constructed as to control both of said movements.

7. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, coil springs supporting said side frame from said journal box, and friction means carried by sides of said journal box intermediate the height of said coil springs and intermediate said journal box and springs, said friction means being arranged to engage said side frame for controlling said vertical movement.

8. In a railway truck of the character having a side frame and journal box arranged for relative vertical and transverse movements, the combination of, vertically spaced means outstanding from side walls of said journal box, and friction means carried by said first named means acting longitudinally and transversely of said truck for snubbing both of said movements.

9. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, vertically spaced means outstanding from side walls of said journal box and extending within said side frame, and friction means associated with said outstanding means; said friction means being arranged to engage said side frame to control said vertical movement.

10. In a railway truck of the character having a side frame and journal box arranged for relative vertical and vertically tilting movements, the combination of, a housing opening inwardly and outwardly of said truck and formed on a side wall of said journal box, and a snubber associated with said housing and engaging said side frame, said snubber being so arranged and constructed as to control said vertical movement and permit said tilting movement.

11. In a railway truck of the character having a journal box provided with supporting shelves and a side frame carried by springs supported by said shelves, the combination of, means at each side of said journal box and located between said journal box and springs, and friction means carried by said first named means and arranged to engage frictionally said side frame for controlling movement of said springs.

12. In a railway truck of the character having a journal box provided with shelves and a side frame carried by springs supported by said shelves the combination of, vertically spaced ledges outstanding from said journal box within said side frame, said ledges being disposed between said journal box and springs, friction shoes held vertically by said shelves and spring means urging said friction shoes transversely of said truck and against said side frame.

13. In a railway truck of the character having a journal box provided with shelves and a side frame carried by springs supported by said shelves, the combination of, vertically spaced ledges on sides of said journal box and extendin toward said springs, friction shoes supported by said ledges, spring means urging said friction shoes transversely of said truck and against said side frame, and surfaces on said friction shoes adjacent accommodating surfaces on said ledges for permitting a vertical tilting movement of said journal box relative to said side frame.

14. In a railway truck of the character having a journal box provided with shelves and a side frame carried by springs supported by said shelves, the combination of, vertically spaced ledges on sides of said journal box and extending toward said springs, relatively flared surfaces on said side frame in telescoping relation with said ledges, shoes interposed between said ledges and having angularly disposed surfaces, some of said surfaces being arranged to engage said relatively flared surfaces for controlling a vertical movement of said side frame, and others of said surfaces being arranged to engage said journal box for controlling a relative transverse movement between said journal box and side frame.

15. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, vertically spaced ledges outstandin from said journal box, relatively flared surfaces on said side frame in telescopin relation with said ledges, shoes interposed between said ledges and having surfaces arranged to engage frictionally said relatively flared surfaces, and spring means urging said shoes in a direction away from one another.

16. In a railway truck of the character having a side frame member and a load carrying member arranged for a plurality of relative movements to one another, the combination of, vertically spaced ledges on one of said members extending toward the other of said members, relatively flared surfaces on one of said members in overlapping relation with said ledges, shoes between said ledges and relatively flared surfaces; said shoes being arranged to engage frictionally one of said members for controlling one of said movements, and said shoes being further arranged to engage frictionally the other of said members for controlling another of said movements.

17. In a journal box, the combination of, vertically spaced means outstanding from sides of said journal box, and friction means arranged to be engaged by and disposed between said vertically spaced means.

18. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, coil springs supporting said side frame from said journal box, horizontally expansible friction means carried by said journal box intermediate the height of said coil springs, said friction means being arranged to engage said side frame for controlling said vertical movement, and coactable means on said friction means and side frame for facilitating assembly of said journal box, side frame and friction means.

19. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, vertically spaced ledges outstanding from side walls of said journal box, relatively flared surfaces on said side frame, and friction means carried by said ledges and frictionally engaging said flared surfaces for snubbing said vertical movement.

20. In a railway truck of the character having a side frame and journal box arranged for relative vertical and transverse movements, the combination of, vertically spaced ledges outstanding from side walls of said journal box, a vertical surface carried by said journal box between said ledges, relatively flared surfaces on said side frame, and friction means carried by said ledges and arranged to frictionally engage said vertical and flared surfaces.

21. In a railway truck of the character having a side frame and journal box arranged for relative vertical and transverse movements, the combination of, vertically spaced ledges outstanding from each side wall of said journal box, a vertical surface carried by each side wall between said ledges and extendin transversely of said truck, surfaces carried by said side frame and disposed at an oblique angle to said vertical surfaces, and friction means at each side of said journal box and between and arranged to contact frictionally all of said surfaces.

22. In a railway truck of the character having a side frame and journal box arranged for relative vertical and transverse movements, the combination of, vertically spaced means outstanding from side walls of said journal box, substantially vertical faces between said means and carried by said journal box, surfaces carried by said side frame adjacent said substantially vertical faces, said surfaces being disposed at an oblique angle to said substantially vertical faces, and friction means supported by said means and being arranged to engage frictionally said faces and surfaces.

23. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, vertically spaced means extending substantially horizontally from said journal box, relatively flared surfaces on said side frame adjacent said means, and spring urged means between said vertically spaced means and frictionally engaging said relatively flared surfaces.

24. In a railway truck of the character having a side frame and journal box arranged for relative vertical andtransverse movements, the combination of, vertically spaced means extending substantially horizontally from said journal box, a substantially vertical and substantially transverse surface carried by said journal box adjacent said means, relatively flared surfaces on said side frame adjacent said surface, and spring urged means associated with said first named means and arranged to frictionally engage all of said surfaces.

25. In a railway truck of the character having a side frame and journal box arranged for relative vertical and transverse movements, the combination of, vertically spaced means extending substantially horizontally from said journal box,

vertically and transversely disposed surfaces on said journal box, relatively nared surfaces on said side frame adjacent said iirst named surfaces, and transversely acting spring means urging friction means into frictional contact with all of said surfaces; said friction means being associated with said first named means.

26. In a railway truck of the character having a side lrame and journal box arranged for relative vertical and transverse movements, the combination or, vertically spaced means extending substantially horizontally from said journal box, transversely disposed surfaces between said first named means carried by said journal box, relatively flared surfaces carried by said side frame substantially facing said transversely disposed surfaces, and spring pressed means held in place by said flared surfaces and spaced means for frictionally engaging all of said surfaces.

27. In a railway truck of the character having a side frame and journal box arranged for relative vertical movement, the combination of, means extending from said journal box toward said side frame, transversely disposed surfaces forming a part of said journal box and located near said means, relatively flared surfaces telescoping said means and carried by said side frame, and transversely urged means held in position by said means and surfaces and arranged to engage frictionally all of said surfaces.

28. In a railway truck of the character hav-- ing a side frame and journal box arranged for relative vertical movement, the combination of, means extending from said journal box toward said side frame, transversely disposed surfaces forming a part of said journal box and located near said means, relatively flared surfaces telescoping said means and carried by said side frame, and transversely spaced means urged transversely against said flared surfaces and iongitudinally against said transversely disposed surfaces for frictionally engaging all of said surfaces; said transversely spaced means being moved vertically relative to said side frame by said first named means.

DONALD S. BARROWS.

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

UNITED STATES PATENTS Number Name Date 644,071 Gummi Feb. 27, 1900 1,130,665 Bullock Mar. 2, 1915 1,725,310 Stedefeld Aug. 20, 1929 1,793,338 Shannon Feb. 17, 1931 2,029,749 Webb Feb. 4, 1936 2,168,293 Kiesel Aug. 1, 1939 2,273,201 Holland et a1. Feb. 17, 1942 2,295,549 Cottrell Sept. 15, 1942 2,308,750 Graham Jan. 19, 1943 2,327,151 Cottrell Aug. 17, 1943 2,348,453 Couch May 9, 1944 2,355,450 Leese Aug. 8, 1944 2,365,199 Light Dec. 19, 1944 2,378,229 Light June 12, 1945 2,378,414 Light June 19, 1945 2,420,229 Cottrell May 6, 1947 2,421,317 Couch May 27, 1947 2,435,385 Couch Feb. 3, 1948 FOREIGN PATENTS Number Country Date 126,636 Great Britain Aug. 5, 1920

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