US2571190A

US2571190A - Resilient side bearing

Info

Publication number: US2571190A
Application number: US87543A
Authority: US
Inventors: Emil H Blattner
Original assignee: Symington Gould Co
Current assignee: Symington Gould Co
Priority date: 1949-04-14
Filing date: 1949-04-14
Publication date: 1951-10-16
Anticipated expiration: 1968-10-16

Description

06L 1951 E. BLATTNER 2 ,571,190

RESILIENT SIDE BEARING Filed Apfil 14, 1949 Inventor:

\4/ 3 *L j I Emil H Blattner his Attorney Patented Oct. 16, 1951 UNITED STATES PATENT OFFICE RESILIENT SIDE BEARING Emil H. Blattner, Bufialo, N. Y., assignor to The Symington-Gould Corporation, Depew, N. Y., a corporation of Maryland Application April 14, 1949, Serial N 0. 87,543

14 Claims.

This invention relates to a side bearing adapted to be interposed between two relatively movable parts of a railway vehicle.

An object of the invention is to provide a side bearing capable of resiliently resisting the approaching movement of relatively movable parts of a railway vehicle.

Another object of the invention is to provide a side bearing of a compressible type and having its parts so arranged and constructed that fric tional forces'will be created therein to form a side bearing of predetermined capacity.

A further object of the invention is to provide a side bearing of relatively few parts which is of simple construction, positive in actionand durable in service.

A feature of the invention is the provision, in a side bearing, of an integral cap arranged to be urged, during all service movements, into frictional contact with a related base.

An added feature of the invention is the provision, in a side bearing, of a cap and housing so arranged and constructed as to prevent the cap from shifting horizontally relative to the housing while permitting vertical movement of the cap relative to the housing during service actions of the side bearing.

Another feature of the invention is the provision, in a side bearing, of shoes movably mounted on a cap and in constant frictional contact with a housing.

The above and numerous other objects and features of the invention will become apparent from the illustration of the accompanying drawing which discloses an exemplified form of the in-,-

the lines 33 of Figure 1, looking in the direc--' tion of the arrows.

Figure 4 is a fragmentary vertical sectional view taken along the lines 44 of Figure 1, looking in the direction of the arrows.

Referring now in detail to the drawing, wherein like reference characters designate like parts, the numeral I is employed to indicate, in a somewhat general manner, a side bearing illustrative of the present invention and of a particular type capable of compressing and expanding within plate.

certain predetermined limits to control, snub or cushion the movements of a pair of associated, relatively movable bolster or load carrying members of a railway vehicle (not shown).

The side bearing is formed in part by a housing 2 comprising a lower or base plate 3 adapted to bear upon or be supported by a truck bolster, only a top surface it of which is shown. The base plate is provided with apertures 5 positioned adjacent the transverse limits thereof for the accommodation of any type of means (not shown) to secure the side bearing to the truck bolster. 'Upstandingfrom the base plate are longitudinally spaced, end walls 6 which extend toward a body bolster, only a lower surface of. a side bearing thereof being indicated in the drawing by the diagrammatic line I. The end walls are preferably straight and terminate short of the body side bearing surface "I for-the express purpose to be made hereinafter. apparent. The related edges of the endwalls are joined by a side wall 8, sometimes hereinafter called the rear or back side wall and which extendsvertically for the full height of the end walls from the base The rear side wall is substantially flat to merge with the end walls as integral parts thereof. Spaced a predetermined distance from. the rear side wall is another side wall 9, sometimes hereinafter termed the front side wall forconvenience and which also, like its related walls, extends from the base plate truly vertical to the same extent as itscompanion walls.

Positioned within the housing is a cap lllhaving a portion thereof projecting above the upper limits or extremities of the housing wall in order to allow a downward movement-of the cap relative to the housing during a compressive movement of theside bearing. The cap is formed in part bya top or bed plate whichhas a raised or embossed portion l2 arranged to bear, constantly against the body side bearing surface I with the clear space between the bed plate andupper edges of the housing walls being determinative of the normal compressible or permissible downward movementof the cap relative to the housing.

The side bearing is positioned adjacent to the extremities of the .bodyand truck bolstersand since the bolsters pivot relatively to one another about a common axis located at thelongitudinal center line of the railway vehicle or a point midway between the bolster. extremities, the side bearings are, during service, urged along an arcu- -ate path about the above-mentioned common axis when the vehicle with which theyare associated traverses a curve. Also it has been found by exhaustive tests, that when a railway vehicle is travelling along a straight track, the trucks of the vehicle have a definite tendency to nose or pivot about their connection to the vehicle body to thus follow a somewhat sinuous path. When such motions are set up in a railway truck the side bearings carried thereby are continually being moved along the arcuate path above mentioned. Since the bed 'plate of the'cap is maintained, as above recited, in constant, contact with the body side bearing surface 1, any pivotal movement of the truck relative to the railway vehicle will result in frictional forces beingcreated on the cap bed plate and body side-bearing intimate surfaces. These frictional forces tend definitely to control such movements of the truck to mate'- rially reduce or control the above mentioned nosing action thereof.

The cap is provided with downstanding longi tudinally spaced end flanges I3 which terminate 'short of the housing'base plate aiid areiarran'ged in inwardly spaced relation to the "housing end walls. Joining related edges of the end flanges and also of the same vertical extent therewith is a side flange l4, sometimes hereinafter termed the rear side flange. This-rear side flange merges with the end flanges to form integral-parts thereof and is substantially plane or *flat to be in spaced, preferably parallel, relation with the housingrear side wall. As will be noted the end and rear side flanges are maintained out of contact with their immediately adjacent walls so that no false capacity will be built up in the side "hearing which would be the case if occasional contact were permitted between these flangesand walls. Completing the'cap is another side flange I 5; sometimes hereinafter called the front side flange and this flange 'isalso a-truly'vertical member joining related; edges of the end flanges and coextensive vertically therewith.

v The'side bearing'being of the 'resilient'tvpe is arranged to control or 'cushionthe rockin action of a vehicle'bodv relative to the truck thereof. Accordin lv, it is preferred'toarrange the cap and'housing so that'as the capmoves vertically irelati e to 'the'housing during service movements. frictional forces are created on contiguous surfaces to thereby add to the controlling or snubbing o'ualities of the side bearing. Because of the radial movement of the sidebearing above'n'oted which rn'av be'in "a' clockwise "or counter-clockwise direction depending entirely upon the action of the truck, it is'pref'erredthat 'the'si'debeab 'ing be "so arran ed and constructed thatn'o lest motion will be resent therein. That is to say. ifthe bearing has completed a clockwise radial movement andthen is constrained, due to truck action, to execute 'a counter-clockwise movement and also subiect it to service blo s a ainst which it may not be reinforced. To eliminate all of the above named undesired contin encies the front side wa l of the housin 'is'made nreferahlvvsha ed in plan or angular with resneotto the back s e wall'as clearly shownin Figure l 'of the drawing.

The frontside flange of the cap is also formed V-shaped in plan and spaced a predetermined distance inwardly of the housing from the front side wall thereof. Formed on each leg of the front side flange is a socket, recess or spherically disposed depression [6 opening outwardly of the cap or facing the related front side wall. These sockets are preferably formed in the front side flange intermediatethe height thereof. Disposed between the front side flange and front side wall are a plurality, preferably two, shoes or blocks l1, each having a bearing plate or web l8 presenting an outwardly facing or exposed surface IS) in intimate contact or in frictional engagement with arelated surface 20 of the front side wall. Because of the possible variations in the relationship of the surfaces 4 and I it is believed advisable at the present writing to incorporate some structure in the side bearing to compensate'for any such possible variations in order to assure, at all times, a full and constant contact between the surfaces (9 and 20. Toward the'accomplishment of the above end eachshoe is provided with a'ball, protuberance or spherically formed bulb 2| extending inwardly of the side bearingfrom a central locationo'f the shoe plate or web. Each protuberance isne'sted -or seated in a related recessand since each shoe Web is preferably spacedfrom the capfrontside flange each cap is accordinglyarticulated relative to the cap. The cap and shoes beingco'nnected by thedescribed universal 'joint any variation between the surfaces '4 and I will notdisturb the desired relatlonshlp 'between the surfaces IB and 20.

As previously stated the-cap is arranged tomove vertically relative to the housing and as illu'strative of a type of yieldablemeansWhich'may be used to support the cap, there'is shown a pair of coil or helical springs 22 positioned within the housing and acting'vertically thereofbetween the base plate and 'bed plate. The coil-springs --are "spaced from one anotherlongitudinallyof the side bearing and are desirably centeredrelative to the embossed portion-ofthe bed plate because, as will be recalled, it is only --this latt er portion which bears against the body sidebearing. Centering studs 23 are provided ontlie'bed and-base plates to maintain 'thesprin'gs in a predetermined position. x I

As previously indicated, the shoes are urged into frictional engagement with the housing front side wall and for the "execution -of this action there is introduced into the-side bearing s, a'yieldable-or compressible means fl. This last mentioned means-is 'charactriaedin partby a helical or coil spring 25 which is'norinally and preferablyhorizontally disposed transversely of the side bearing intermediate "the heightthereof. The one or leading-end of coil' spring 25 is respect to seated within apocket lfifformed inwardly of the side bearing in"thefront'-side fiange at what m'ay'be considered the apex of this V -shaped flange. Because the cap moves vertically with i the housing a-ndflth'e coil spring 25 as "will be hereinafter moredully'noted, reacts against the cap and housing,-so'nie tiltingfaction of this spring will takeplace. Due'tothis action it is believed advisableto associate some means with the spring to compensate for such action. Accordingly, the cap rear side flange is provided with an apertureor openingfl through which the horizontalspr'in'g passes *and this opening'is of sufiicient vertical extent to allow-a free,'un

restricted service movement :of this -'accomm'odated spring. Associated with the-other enddif'the spring is a rocker spring seat 28 having a stud -29 thereof extending into the spring for positioning purposes. The rocker seat has a convex or cylindrical surface'30 bearing directly against the flat housing rear side wall so that as the spring tilts in response to a' cap movement very small abnormal stresses will be set up in the spring or the spring will be; subjected to very little flexing action counter to its longitudinal axis. A tooth 3| is formed on the rocker seat to extend into a suitable opening 32 of the housing rear side wall to thereby maintain the rocker seat in a predetermined position. I It will be appreciated, of course, that the compressional value of the horizontal spring is suflicient to prevent a longitudinal shifting of the cap relative to the housing.

From the above description of the invention considered with the exemplification of the drawing it will be noted that various changes and alterations will become apparent without departing from the spirit of the invention or scope of the appended claims.

I claim:

1. In a side bearing, the combination of, a housing having a vertical wall thereof formed V-shaped in plan, a cap extending into said housing and having sockets opening toward said wall, shoes movably mounted in said sockets and in frictional contact with said wall, said shoes arranged V-shape in plan for resisting longitudinal movement of said cap relative to said housing, spring means urging said shoes against said wall, and spring means urging said cap outwardly of said housing.

2. In a side bearing, the combination of, a housing having a vertical wall thereof formed V- shaped in plan, a cap extending into said housing, shoes articulately mounted on said cap and in frictional contact with said wall, spring means within said housing supporting said cap, and spring means urging said shoes against said wall.

3. In a side bearing, the combination of, a housing having a vertical wall thereof formed V- shaped in plan, a cap extending into said housing, a shoe articulatel mounted on and carried by said cap and in frictional contact with said wall, spring means supporting said cap, and spring means urging said shoe against said wall.

4. In a side bearing, the combination of, a housing having a vertical wall thereof formed V- shaped in plan, a cap extending out of said hous ing and presenting sockets facing said wall, shoes universally mounted in said sockets and bearing against said wall, a horizontal spring urging said shoes against said wall, and vertically acting spring means supporting said cap.

5. In a side bearing, the combination of, a housing having a vertical side wall thereof formed V-shaped in plan, a cap in telescoping relation with said housing and having sockets facing said wall, shoe means universally mounted in said sockets and in frictional engagement with said wall, horizontal spring means intermediate the height of said cap for urging the latter and shoes toward said wall, and vertical spring means for resiliently supporting said cap.

6. In a side bearing, the combination of, a housing having a vertical wall formed V-shaped in plan, a cap in telescoping relation with said housing and having sockets facing said wall, shoes having centrally located ball portions occupying said sockets, horizontal spring means contacting said cap and urging said shoes into engagement with said wall, and spring means with in said housing for supporting said cap.

7. In a side bearing, the combination of, a housing having a vertical side wall formed V- shaped in plan, a cap having a portion thereof extending downwardly into said housing, .outwardly facing sockets intermediate the height of said cap, shoes interposed between said cap and housing, spherical portions on said shoes centrally thereof and seated in said sockets. spring means urging said shoes into frictional. contact with said wall, and spring means sup-'- porting said cap.

8. In a side bearing, the combination of, a housing having a vertical wall, a cap partially extending into said housing, a socket in said cap facing said wall, a shoe interposed between saidi cap and wall, a protuberance spherical in formation centrally of said shoe and seated in said: socket, spring means acting against said cap for urging said shoe into frictional engagement with: said housing, and spring means resiliently supporting said cap.

9. In a side bearing, the combination of, a housing having a vertical'wall, a cap in telescoping relation with said housing and having a flange in spaced relation to said wall, a socket in said flange opening outwardly of said cap, a shoe interposed between said flange and wall, a spherical protuberance formed centrally on said shoe and seated in said socket, horizontal spring means urging said shoe into frictional engagement with said wall, and vertical spring means supporting said cap and shoe.

10. In a side bearing, the combination of, a housing having a vertical Wall V-shaped in plan, a cap in telescoping relation with said housing and having a flange spaced from said wall, a pair of shoes interposed between said wall and flange, outwardly opening sockets in said flange, spherically arranged protuberances on said shoes and seated in said sockets, spring means for urging said cap toward and said shoes into contact with said wall, and spring means supporting said cap and shoes.

11. In a side bearing, the combination of, a housing having a vertical wall V-shaped in plan and a vertical plane wall spaced therefrom, a cap in telescoping relation with said housing and having a flange adjacent to said V-shaped wall, shoes carried by said flange and in frictional engagement with said V-shaped wall, spring means acting against said flange and plane wall for urging said shoes against said V-shaped wall, and spring means supporting said cap and shoes.

12. In a side bearing, the combination of, a housing having a vertical wall V-shaped in plan and a vertical plane wall spaced therefrom, a cap in telescoping relation with said housing and having a flange adjacent to said V-shaped wall, shoes carried by and articulated with respect to said flange, spring means acting between said plane wall and flange for urging said shoes into frictional engagement with said V-shaped Wall, and spring means supporting said cap and shoes.

13. In a side bearing, the combination of, a housing having a vertical wall V-shaped in plan and a vertical plane wall spaced therefrom, a cap in telescoping relation with said housing and having a flange adjacent to said \{-shaped wall, shoes carried by and movably mounted on said flange, said shoes being arranged in V-formation and bearing against said V-shaped wall, horizontal spring means reacting against said plane wall and flange for maintaining said shoes in 7 constant contact with .said' V.-.shaped wall, and vertical spring. means supporting said cap and shoes.

14. vIn a side bearing, the combination of, a housing having a vertical wall V-shaped in plan andavertical plane wall spaced therefrom, a cap in telescoping relation with said housing and havinga flangeadjacent tosaid V-shapedwall, shoes carried by and movably mounted on .said flange intermediate the height thereof, spring means intermediate the height of said. cap and housing and acting against said plane wall and flange for urging said shoes into frictional engagement REFERENCES CITED The following references are of record in'the file of this patent:

UNITED STATES PATENTS Number Name Date 2,197,783 Barrows Apr. 23, 1940 2,415,188 Olander Feb. 4, I947