US2297863A - Railway truck - Google Patents

Description

Oct.6, 1942. D, s, BARRQWS Em 2,297,863

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet l Oct. 6, 1942. n s BARRQWS ETAL 2,297,863

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet 2 1942- D. s. BARROWS ETAL 2,297,853

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet} 1 I I v Z gvwe/wfoa qjl .DONHL a Jfiswmms 62mm! 7? ("000/ Patented a. 6, 1942 RAILWAY TRUCK Donald S. Barrows and Glenn F. Couch, Rochester, N. Y., assignors to The Symlngton-Gould Corporation, Rochester, N. Y., a corporation of Maryland Application January 11, 1940, Serial No. 313,447

21 Claims.

This invention pertains to railway trucks.

An object of the invention is the provision of a desired degree of flexibility in a railway truck so that the truck may freely adapt itself to the irregularities of the rails which it traverses during service.

Another object of the invention is to provide a journal box and side frame connection which will permit axles of a railway truck to angle horizontally and in parallelism with respect to the side frames as well as cant, slope, tilt or angle vertically transversely of the truck. Y

Another object of the invention is the provision in a railway truck of spring means of different character to form a non-harmonic nest or group of resilient means interposed between a side frame and journal box assembl A further object of the invention is to provide means between an assembly comprising a journal box housing, axle and roller bearings and an associated structure so that the assembly may move freely transversely of the truck of which they form a part.

The above-enumerated objects as well 'as numerous features of the invention will become apparent from an inspection of the accompanying drawings and a perusal of the succeeding detailed description.

Considering the drawings generally wherein there is shown merely as a means of example and not of limitation one form of the invention:

Figure 1 shows a partial side elevational and a partial vertical sectional view of a portion of a railway truck embodying the present invention.

Figure shows a' vertical cross-sectional view taken along the line 2-2 of Figure 1; looking in the direction of the arrows.

Figure 3 shows a partial planview and a partial horizontal sectional view taken along the line 3-3 of Figure 1, looking in the direction of the arrows.

Figure '4 shows a horizontal sectional view taken along the line 4-4 of Figure 1, looking in the direction of the arrows.

Figure 5 is a side view of the journal box of Figure 1 shown in elevation and removed from the associated structure.

Figure 6 is a side elevational view of the yoke shown in Figure I removed from the associated structure.

Figure 7 is a diagrammatic plan view of. a railway truck having side frames thereof in true transverse alignment.

Figure 8 is a diagrammatic plan view of a railtrated and described in detail, it being clearly understood that the undisclosed details thereof may follow the teachings of the patents of Donald S. Barrows, Nos. 2,132,381 to 2,132,385, inelusive, granted October 11, 1938, or any desired or similar construction. The truck comprises a pair of transversely spaced side-frames 2 only a portion of one of which is shown in detail in the drawings for the purpose of simplifying the disclosure. Throughout the major portion of this specification reference will be made to only one side frame, it being recognized that a railway truck includes two sides frames as illustrated in Figures 7 and 8 which extend longitudinally of and adjacent the transverse limits of the truck.

The side frame comprises a top chord or compression member 3 extending th full length of the frame and being made up of a substantially horizontal top web 4 and spaced flanges 5 depending from adjacent the lateral edges thereof. Making up the'remaining portion of the side frame under immediate consideration is a bottom chord or tension member 6 having an end diagonal portion 1 directed from adjacent the central area of the side frame upwardly toward the associated extremity of the compression member. The diagonal portion comprises a web 8 having downwardly extending spaced flanges 9, adjacent the lateral limits of the web, merging with the compression member flanges adjacent to or inwardly from the end of the side frame, to thus continue to the longitudinal extremity of the side frame as vertically disposed transversely spaced flanges Ill. At or adjacent the juncture of the tension and compression member flanges the direction of the diagonally disposed web 8 is altered to extend substantially horizontally toward the extremity of the side frame as a shelf or ledge II to terminate in a vertically disposed rib l2 and function, among other purposes, as an intermediate connecting web joining and reinforcing the frame flanges I ll intermediate the heights thereof. The flanges II). are apertured, as at l3, to form pockets, windows or openings for the accommodation of associated structure to be hereinafter described in detail. By the thus formation of the pockets adjacent an end of the side frame the walls present jaws l4 which define the horizontal limits or pockets, while the To carry out the objects of the' invention so that the truck is adapted for high speed service and, therefore, capable'of adjusting itself freely to the irregularities of the rails traversed while in use, the assembly associated with the side frame has been designed particularly to accommodate axles and journal boxes having roller bearings associated therewith. It is, of course, not the present intention to limit the invention to combinations of instrumentalities including roller bearing assemblies, since arrangements embodying frictionbearings areequally adaptable to the present construction. One of the purposes of illustrating roller bearings in combination with the remaining associated and related details of construction is to point out that, irrespective of the rigidity of the assembly formed by the journal box, roller bearings and axles,

this particular assembly may, as desired, be incorporated in the truck structure without diminishing the flexibility thereof and come within the spirit and scope of the present invention.

Since some axle assemblies, inclusive of axles,

uppermost limits thereof are marked by the ledge journal boxes and roller bearings, provide for 2,se7,sas

apart a distance greater than the distance between the top web adjacent portion of the end flanges. The pendants are extended vertically or upwardly through the plane or a distance sub stantially equal to the vertical height of the sloping portions 23, as at 25, so as to present an appreciabl yoke'bearing area capable of reacting against the side frame jaws. Formed on the pendants, outwardly thereof, are coaxial convex surfaces 25 cylindrical in configuration and substantially coaxial with the previously described vertical axis of the journal box and side frame jaw concave surfaces.

Associated with the yoke convex surfaces are correspondingly formed wear plates 21 removably secured to the pendants by any desired method so that they may be replaced after they have worn toor beyond a permissible degree. The yoke wear plates are spaced from the jaw wear plates a distance which permits a free movement of the yoke with respect to the side frame and still present confronting cylindrical surfaces for guiding the yoke during service movements to which it will be subjected. By reason of the particularly formed and related concave and convex wear plate surfaces the yoke is arranged or adapted to rotate or angle horizontally with respect to the side frame, and any transverse or longitudinal movement of the yoke with respect to the side frame will be restricted by the jaws since the yoke is, in effect, cupped within the side frame pockets. Beginning substantially in the horizontal plane of the yoke top web are verments of the axle assemblies in the directions hereinabove indicated.

Toward the accomplishment of the above purposes the jaws H are formed with arcuate or cylindrical concave surfaces I 5 fa cing inwardly of the pockets I3 all of which are substantially coaxial with respect to one another and a vertical line formed by the intersection of a vertical plane passing through the longitudinal axis of the side frame and a transverse vertical plane bisecting the center line of an axle IS. The vertical line will be designated and referred to hereinafter as a vertical axis or the vertical axis of the journalbox. Associated with the jaws and formed to correspond with the Jaw surfaces I5 are arcuate cylindrical coaxial wear plates l1 removably secured to the jaws by any manner or means deemed desirable so that after continued use and subsequent wear beyond a predetermined degree the wear plates may be replaced in renovating the truck structure.

Positioned within the side frame pocket is a vertically and rotatively movable adapter casing or yoke l8, generally of inverted U configure -22 for the purpose to be hereinafter explained.

When the end flanges reach the proximity of the lower limits of the inner and outer flanges they are directed in a diagonal or sloping fashion away from one another. as at 23, until they approach the associated related jaws adjacent which they are again directed substantially vertically or terminating in pendants 24 spaced tically disposed, transversely spaced, longitudinally directed gussets 28 which outstand from the yoke side flanges to merge with the portion 2-5 of the yoke pendants and thereby reinforce the entire yoke end flanges against thrusts imparted thereto during service. Since the yoke flanges and gussets extend through the horizontal plane of the side frame ledge, an aperture 29 is formed in the ledge to accommodate the upper extremity of the yoke and sufllcientclearance is provided about the yoke to allow a free unrestricted service movement thereof.

Resilient elements are incorporated in the construction to form a means whereby loads are transmitted from the side frame to the axle, and as exemplary of one of the elements which may be herein employed is a semi-elliptic or leaf spring 30 positioned intermediate the frame flanges l0 and having ends thereof bearing against longitudinally spaced, downwardly facing, spring seats 3| provided on the compression member web. The

. top web of the yoke has an upwardly facing opening or recess 32 forming a receptacle or 'seat for a band 33 which binds the leaves of the sprinB together, and in this manner the spring and yoke are at all times maintained in assembled relation.

The construction includes a journal box or axle housing 34 in subjacent supporting relation with the yoke and may be of any of the well known types. The journal box forms a receptacle, for an extremity of the axle l6 and a set of raceways and antifriction or roller bearings 3! which are interposed between the axle extremity and the journal box. As previously indicated, any type of roller hearing may be employed, and, if resired, this particular type of bearing may be entirely dispensed with and have substituted in lieu thereof a friction bearing and the usual accommodating associated elements.

The journal box is arranged to move transversely of the truck with respect to the side frame so as to provide for a lateral motion of the journal box, axle and roller bearings, hereinafter termed or referred to as the axle assembly, and thereby allow the assembly to lend itself within certain limits to positions to which it may be urged during service. Toward the accomplishment of the preceding recitals, the top wall of the journ-albox is formed withan upwardly facing recess 38 accommodating a bearing plate 31, whilethe under portion of the yoke top web is similarly provided with a downwardly facing recess 48 which, in like manner, is occupied by a yoke bearing plate 39. Interposed between and in intimate contact with confronting arcuately disposed or concave surfaces 40 on the box and yoke bearing plates so that, when the' spring assembly or nest adjacent one end of the side frame is compressed a greater degree than the spring group at the corresponding extremity of the side frame adjacent the other side of the truck or when one extremity of an axle drops below the horizontal position of the other extremity, and as a result thereof the entire axle assembly cants, slopes or tilts transversely of the truck, the roller element above each journal box will still remain in constant contact with the bearing plates between which it is positioned. It will be readily seen, were a plurality of roller elements substituted for the single illustrated element and arranged adjacent one another transversely of the truck, that a transverse vertical angling of the axle assembly may result in either the inbound or outbound roller element being relieved of stresses with all of the forces being carried by the other roller element. This possible release of one of the roller elements may also result in its being displaced accidentally from its normal or predetermined position. It is, therefore, deemed advisable to employ but a single roller element above each journal box to accomplish the purpose intended.

Since the journal box is adapted to move transversely relative to the side frame and associated yoke, means has been provided to guide the journal box throughout the entire range of such a movement, and to this end the inner sides 42 of the yoke arms and particularly the pendant portions thereof are provided with plane substantially vertical, transversely disposed, inwardly facing surfaces 43 which have correspondingly formed wear plates 44 secured thereto in any preferred manner.

Similarly, the journal box carries oppositely facing plane surfaces 45 disposed in spaced, substantially parallel relation with the yoke surfaces 43. The journal box has the sides thereof bifurcated, as at 48, to present upstanding shoulders 41 projecting above the extended transverse plane of the yoke flange diagonal portions 23, and thereby a greater area of the journal box reacts against the yoke side flanges; Wear plates 48 are removably secured to the journal box plane surfaces in any approved manner to lie adjacent but spaced from the yoke wear plates 44; the

clearance between the associated plates 44 and 48 being determinative of the permissible or predetermined longitudinal movement of the journal box with respect to the side frame and yoke. The plates 44 and 48 not only present wear surfaces to guide the journal box in its movement transversely of the truck, but they also form abutments to limit the longitudinal movement of the journal box.

It has also been thought advisable to have the journal box guidingly engage the side frame during certain horizontal angling movements of the journal box, and to carry this thought forward the journal box has, adjacent its lower extremities, longitudinally and transversely spaced outstanding arms or ribs 49 which are on each side of the journal box directed toward one another inwardly of the side frame. The arms have outer cylindrical convex surfaces 50 thereon which are spaced from and substantially coaxial with respect to the vertical axis of the journal box and the inwardly facing jaw carrying wear plate coaxial surfaces. The arm surfaces 50 are, therefore, in or adapted to be shifted to a position in vertical alignment with the correspondingly formed surfaces on the yoke arcuate plates. The distance in which the surfaces 50 are spaced from the associated and correspondingly formed jaw carrying surfaces is substantially cue] to the permissible transverse movement of the journal box relative 'to the side frame; that is to say, when the joumal box moves outwardly of the truck from its normal .position, reference being made particularly to Figure 4 of the drawings, the arms on each side of the transverse center line of the journal box outwardly of the journal box willhave their surfaces engaged by the associated jaw carrying surfaces to guide the journal'box vertically or in a horizontal angular direction. The same thing is true of the surfaces 50 carried by the other arms formed on each side of the journal box upon a transverse movement of the journal box inwardly of the truck. Also, the distance between the surfaces 50 and the correspondingly formed jaw carrying surfaces is substantially equal to the sums of the distances between the wear plates 48 and 44 and the arcuate wear plates 21 and I1, and by reason of this arrangement when the longitudinal and transverse horizontal clearance is taken up between the journal box, yokeand jaw confronting surfaces, the surfaces 50 on one side of the longitudinal axis of the side frame will,'together with the surfaces on the yoke wear plates 21 on one side of the transverse vertical plane of the journal box, all function to guide the journal box substantially about its vertical axis upon a horizontal angling movement of the journal box.

Outstanding from the sides of the journal box, extending longitudinally in a direction away from one another, are brackets 5| positioned adjacent to and joining the lower extremities of the joura nal box arms 49 to be reinforced against superimposed loads by means of underlying depending ribs 5| which are spaced transversely of the journal box and extend for the entire length thereof.

In order to assist the semi-elliptic spring in supporting the side frame there are, in substance,- spring units 52, such as those shown and claimed in Patent No. 2,132,387, granted October 11, 1938, to Donald S. Barrows, interposed between the journal box brackets 5| and the over ying portions of the side frame shelf II. The spring units comprise a coil or helical spring 53 having associated with each end thereof a cap or spring plate 54, the latter of which have outer cylindrical surfaces bearing against the top surface of the journal box brackets and an undersurfac-e of the side frame shelf. These cylindrical surfaces form adjusting means to permit the units to rock or roll about their vertical axes a the brackets move rotatlvely upon a horizontal angling movement of the journal box. Suitablestuds 55 are formed on the spring caps to project into apertures 58 in the side frame shelf and journal box brackets, respectively, and by reason of this arrangement the spring units are maintained in apredetermined position.

It will be noted that the nest or group of springs employed in the, present embodiment of the invention comprises a semi-elliptic spring supporting the side frame from the yoke and longitudinally spaced coil or helical springs carryin the side frame from the journal box brackets to form a non-harmonic assembly or association of springs. It will, of course, be clearly understood that, if desired, the springs may be replaced with resilient units of a character different from that illustrated.

So as to prevent an unwarranted or excessive downward movement of the journal box and associated structure relative to the side frame, the side frame flanges i terminate in a plane spaced below the journal box brackets in suitably apertured lugs 51 spaced on either side of the vertical center line of the axle and transversely of the side frame longitudinal axis. Extending between or connecting the lugs are bolts or pins 58 of any form which underlie the journal box brackets to form limiting means or stops for arresting movement of the journal box beyond a predetermined position.

As previously stated, the disclosed and described structure is merely illustrative of the present invention, and for the scope of the invention reference is made to the appended claims.

We claim:

1. In a railway truck, in combination, a side frame having spring seats and depending jaws adjacent an end thereof, longitudinally and transversely spaced coaxial concave surfaces formed on said jaws, a vertically movable yoke having a, top web and depending side arms, coaxial convex surfaces on said side arms adjacent and adapted to engage said jaw surfaces so as to provide for substantially constant bearing between said arms and jaws during a. horizontal angling movement of said yoke with respect to said truck, a vertically movable journal box disposed between said arms and adapted to move transversely of said truck therebetween, spring seats formed on said journal box, spring means interposed between said journal box and side frame spring seats, and anti-friction means interposed between said yoke top web and journal box.

2. In a railway truck, in combination, a side frame having spring seats and depending jaws adjacent an end thereof, longitudinally and transversely spaced coaxial concave surfaces formed on said jaws, a vertically movable yoke having a top web and depending side arms, said side arms being provided with coaxial convex surface adapted to engage said jaw surfaces so as to provide for a horizontal angling movement of said yoke with respect to said side frame, a journal box movable vertically with respect to said side frame and being interposed between said yoke arms to be capable of movement transversely of said truck therebetween, spring seats formed on said journal box and yoke web, spring means reacting against said side frame spring seats and said journal box and yoke spring seats,

anti-friction means interposed between said yoke top web and journal box, and convex surfaces on said journal box spaced from the vertically extended plane of said arm convex surfaces and arranged to engage said jaw surfaces.

3. In a railway truck, in combination, a side frame having depending jaws adjacent an end thereof, longitudinally and transversely spaced coaxial concave surfaces formed on said jaws, a yoke having a topweb and depending side arms, said side arms being provided with outer coaxial convex surfaces adapted to engage said jaw surfaces so that said yoke may angle horizontally with respect to said side frame, inner plane surfaces on said arms, a journal box interposed between said arms and having plane side walls positioned adjacent said arm inner surfaces, and a roller element interposed between said journal box and yoke web; said journal box being capable of angling horizontally with respect to said side frame and moving transversely of said truck relative to said side frame and yoke.

4. In a railway truck, in combination, a side frame having depending jaws adjacent an end thereof, longitudinally spaced coaxial concave bearing plate surfaces so that said journal box may move freely transversely of said truck.

5. In a railway truck, in combination, a side frame having spring seats and depending jaws I adjacent an end thereof, longitudinally and transversely spaced coaxial concave surfaces formed on said jaws, a verticallymovable yoke having a top web and depending side arms, a spring seat on said top web, spring means bearing upon said yoke and side frame spring seats, said side arms being provided with outer coaxial convex surfaces adapted to engage said jaw surfaces so that said yoke may angle horizontally with respect to said side frame, inner plane surfaces on said arms, a vertically movable journal box interposed between said arms and having plane side walls positioned adjacent said arm inner surfaces, and a single roller element positioned between said journal box and yoke web; said journal box being capable of angling horizontally with respect to said side frame and moving transversely of said truck relative to said side frame and yoke.

6. In a railway truck, in combination, a side frame having jaws depending from adjacent one end thereof, inwardly facing coaxial concave surfaces on said jaws, a rotatively movable yoke formed by a substantially horizontal web and spaced vertically disposed depending side arms,

said yoke reacting vertically against said side frame, outer cylindrical surfaces on said arms arranged to correspond with and engage said jaw surfaces, inner plane surfaces on said arms, a journal box interposed between said arms, outer plane surfaces on side walls of said journal box adapted to engage said arm plane surfaces, an axle in said journal box, roller hearings interposed between said axle and journal box, and

roller means between said journal and yoke web so that said journal box may move transversely of said truck relative to said side frame and yoke.

7. In a railway truck, in combination, a side frame having jaws depending from adjacent one end thereof, spring seats formed on said side frame, inwardly facing coaxial concave surfaces on said jaws, avertically and rotatively movable yoke formed by a substantially horizontal web and spaced vertically disposed depending side arms, spring means between said yoke web and side frame spring seats, outer cylindrical surfaces on said arms arranged to correspond with and engage said jaw surfaces, inner plane surfaces on said arms, a journal box interposed between said arms adapted to move vertically with said yoke, outer plane surfaces on side walls of said journal box adapted to engage said arm plane surfaces, an axle in said journal box, roller bearings interposed between said axle and journal box, and roller means between said journal and yoke web so that said journal box may move transversely of said truck relative to said side frame and yoke.

8. In a railway truck, in combination, spaced side frames each having jaws depending from adjacent the ends thereof to form pockets, coaxial concave surfaces on said jaws facing inwardly of said pockets, a rotatively movable yoke positioned in each pocket having a web reacting against an associated side frame and depending arms provided with outer surfaces positioned adjacent to and coaxial with associated jaw surfaces to permit said rotative movement, inner plane surfaces on said arms, journal boxes between said yoke arms and having plane outer surfaces adjacent to said yoke plane surfaces, said journal boxes being adapted to move transversely of said truck relative to said side frames and yokes, axles extending between said side frames and into journal boxes, roller bearings interposed between said axles and journal boxes, said journal boxes, roller bearings and axles adapted to move transversely of said truck and to angle horizontally with respect to said side frames as assemblies, and a roller element interposed between each journal box and related yoke web; said roller elements remaining at all times in bearing relation with said journal boxes and yoke .webs irrespective of the position of said axles relative to said side frames.

9. In a yoke adapted for use with an extremity of a side frame, the combination of, a web, inner and outer flanges depending from said web end flanges joining said inner and outer flanges to form a housing therebetween, a downwardly facing recess on said web, a bearing plate in said recess having a single arcuate bearing surface, and pendants forming extremities of said end flanges; said pendants having outer cylindrical coaxial convex surfaces for engagement with correspondingly formed surfaces carried by said side frame for allowing said yoke to angle horizontally with respect to said side frame.

10. In a yoke adapted for use with an extremity of a side frame, the combination of, a web, transversely spaced side flanges depending from said web, end arms extending downwardly from said web and joining said side flanges to forma housing therebetween, a downwardly facingv arcuate surface carried by said web within said housing, portions of said end arms being tapered outwardly and downwardly to terminate in substantially vertical pendants, and cylindrical substantially coaxial wear plates carried by said pendants to permit said yoke to angle horizontal-' 1y with respect to said side frame.

11. In a yoke adapted for use with an extremity of a side frame, the combination of, a web,

, transversely spaced side flanges depending from said web, end arms extending downwardly from said web and joining said side flanges to form a housing therebetween, a downwardly facingv arcuate surface carried by said web within said housing, portions of said end arms being tapered outwardly and downwardly to terminate in substantially. vertical pendants, outer cylindrical substantially coaxial surfaces carried by said pendants to permit said yoke to angle horizontally with respect to said side frame, and inner plane substantially vertical surfaces carried by said pendants to present guiding surfaces for a transversely movable journal box.

12. In a railway truck, in combination, spaced side frames each having jaws depending from adjacent ends thereof to form pockets, journal boxes in said pockets, concave surfaces on said jaws and substantially coaxial with the vertical axes of said journal boxes, means interposed between said journal boxes and jaws, convex surfaces on said means substantially coaxial with and adapted to engage said concave surfaces, convex surfaces on said journal boxes spaced from the vertically extended planes of said means surfaces and being adapted to engage said jaw surfaces, axles extending between said side frames and having their extremities housed in said journal boxes, roller bearings interposed between said axle extremities and journal boxes to form therewith substantially rigid assemblies,

said assemblies, by reason of said concave and convex surfaces, being adapted. to move in parallelism and to angle horizontally with respect to said side frames.

13. In a yoke adapted for use witha side frame.

' vthe combination of a web, a downwardly facing arc'uate surface carried by said web, end arms depending from said web, portions of said and arms being substantially vertical and having substantially coaxial wear surfaces adapted to engage correspondingly formed surfaces on said side frame to permit said yoke to angle horizontally with respect to said side frame, and plane vertically disposed surfaces on said arms to present guiding surfaces for a transversely movable journal box.

14. In a journal box adapted for use with non friction bearings to form a substantially rigid assembly, the combination of a top wall, horizontally spaced side walls depending from said top wall, arms outstanding from said side walls, outwardly facing convex surfaces .on said arms spaced from and substantially coaxial with respect to correspondingly formed surfaces on an associated side frame, said convex surfaces being adapted to engage said correspondingly formed side frame surfaces, and vertical transversely extending plane surfaces on said side walls adjacent said arms for guiding said journal box during a transverse movement thereof.

15. In a journal box adapted for use with nonfriction bearings to form a substantially rigid assembly, the combination of a top wall, horizontally spaced side walls depending from said top wall, brackets forming spring seats outstanding from said side walls, arms outstanding from said side walls on each side of said brackets and having their lower extremities merging into said brackets, convex surfaces on said arms substantially coaxial with respect to a vertical axis of said journal box and spaced from correspondingly formed surfaces on an associatedv side frame to permit a horizontal rotative movement of said journal box relative to said side frame, and vertical transversely disposed plane surfaces on said side walls above said arms for guiding said journal box during a transverse movement thereof.

16. In a journ'al box adapted for use with nonfriction bearings to form a substantially rigid assembly, the combination of a top wall, a concave upwardly facing surface carried by said top wall to accommodate a movable element interposed between said journal box and an associated element, horizontally spaced side walls depending from said top wall, brackets forming spring seats outstanding from said side walls, transversely and longitudinally spaced arms outstanding from said side walls and having their lower extremities merging with said brackets, convex surfaces on said arms spaced fromand substantially coaxial with respect to correspondingly formed surfaces on an associated side frame to permit a horizontal rotative movement of said journal box relative to said side frame, and wear plates secured to said side walls above said arms and having vertical transversely disposed plane surfaces for guiding said journal box during a transverse movement thereof.

17. In a railway truck, the combination of a side frame having depending jaws adjacent an end thereof, coaxial concave cylindrical surfaces on said jaws, a yoke disposed between said jaws and reacting against a portion of said side frame thereabove, said yoke having outer convex surfaces coaxial with respect to and adapted to engage said side frame concave surfaces to facilitate a horizontal rotative movement of said yoke relative to said side frame, inner Diane vertical surfaces on said yoke disposed transversely of said truck, a journal box partially embraced. by

said yoke, movable means interposed between 1 said journal box and yoke to facilitate a movement of said journal box transversely of said truck, outer plane vertical surfaces on said journal box adapted to contact said yoke plane surfaces, and convex surfaces on said journal box below said journal box plane surfaces, said journal box convex surfaces being spaced inwardly of said journal box from an extended plane of said yoke convex surfaces and substantially coaxial with respect to said side frame concave surfaces for engagement with the latter.

18. In a railway truck, in combination, spaced side frames each having spaced jaws depending from adjacent ends thereof to form pockets, journal boxes in said pockets, concave surfaces on said jaws and substantially coaxial with the vertical axes of said journal boxes, means interposed between said journal boxes and jaws, convex surfaces on said means substantially coaxial .with and adapted to engage associated concave surfaces, convex surfaces on said journal boxes spaced inwardly of said journal boxes from the side frames, axles extending between said side frames and having their extremities housed in said journal boxes, and roller bearings interposed between axle extremities and journal boxes to form therewith rigid assemblies; said assemblies, by reason of said concave and convex surfaces, being adapted to move in parallelism and angle horizontally with respect to said side frames.

19. In a railway truck, the combination of a side frame having jaws depending from adjacent one end thereof, coaxial concave cylindrical surfaces carried by said jaws. a yoke disposed between said jaws, coaxial convex cylindrical surfaces carried by said yoke and adapted to engage said concave jaw surfaces, a journal box partially embraced by said yoke, coaxial convex surfaces on said journal box in substantial vertical alignment with said yoke convex surfaces and adapted to engage said jaw concave surfaces, said yoke and journal box being adapted to angle horizontally relative to said side frame, and spring means interposed between said journal box and I said side frame.

20. In a railway truck, the combination of a side frame having jaws depending from adjacent one end thereof, a yoke disposed between said jaws, spring means interposed between said yoke and side frame, a journal box positioned within said yoke, means outstanding from said journal box below said yoke, movable means between said yoke and journal box for permitting said journal box to move transversely of said truck relative to said side frame and yoke, vertical surfaces carried by said journal box and yoke for guiding said journal box throughout its permissible transverse movement, spring seats on said side frame substantially in the horizontal plane of said movable means, and spring means interposed between said journal box outstanding means and side frame spring seats.

21. In a railway truck, the combination of a side frame having jaws depending from adjacent one end thereof, journal box means positioned within and spaced from said jaws, an axle extending into said journal box means, anti-friction elements interposed between said journal box means and axle, separable means interposed between said journal box means and side frame, said last-named means and journal box means being arranged and constructed to move horizontally about a vertical axis relative to said side frame, said journal box means being adapted to move transversely of said truck relative to said interposed means, said interposed means being provided with cylindrical guide surfaces adapted to engage coaxial surfaces carried by said jaws, one of said means being adapted to engage said side frame to limit said horizontal movement.

DONALD S. BARROWS. GLENN F. COUCH.

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