US1698711A - Side bearing - Google Patents

Description

Jan. 15, 1929.

A. M. BRENNE SIDE BEARI'NG Filed med 5,.1923

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Patented Jan. 15, 1929.

ARILD M. BRENNE, or CHICAGO, ILLINOISLASSIGINDB, BY Mnsnn assre mnnrs, T0

w. H. Minna, me, A CORPORATION or DELAWARE.

s ne BEARING.

Application filed December 5, 1923. Serial No. 678,565.

This invention relates to improvements in side bearings. a

One object of the invention is toprovide a simple and eflicient, self-centering, body bolster side bearing, including an anti-friction roller element, wherein'the roller is returned to centered position by pendulum acting means.

A further object of the invention is to provide a device of the character indicated, wherein the roller is provided with annular flanges at opposite sides thereof with which co-act a pair of pendulum elements for returning the same to centered position.

Other objects and advantages of the invention will more clearly appear from the description and claims hereinafter following.

In the drawings forming a part of this specification, Figure 1 is a vertical, sectional View taken through the ends of a body and truck bolster of a railway car showing my improvements in connection therewith, and Figure 2 is a vertical, sectional view corresponding substantially to the line 2f2 of Figure 1.

Tn sai-d drawing, 10 denotes the upper-portion of atruck bolster of a railway car and 11 the opposed lower part of a body bolster. My improved hearing, as shown, is attachedto the body bolster and the anti-friction element is normally spaced a slightdistance from the truck bolster.

The improved bearing, as shown, comprises, broadly, a housing or retaining member A; an anti-friction element proper B; a pair of supporting fingers or pendulums CC; a pivot pin D; a wear plate E within the housing; and a wear plate F attached to the upper surface of the truck bolster.

The housing or retaining member A ,isin the form of a box-like castingfand'has an upper wall 12, spaced depending side walls 1313 and spaced depending end walls l ll l. The member A is provided at the corners thereof with suitably perforated lugs 15- 15 laterally projecting from the end walls, by which the same riveted'or otherwise secured to the body bolster. The upper wall 12 of the housing iscentralIy downwardly offset as shown,'the offset portion thereofbeingprovided with-a convex surface on its under side and to which the wear plate E is attached. The offset portion of the wa11 12 is provided centrally thereof 'ures 1 and 2.

with a thickened portion 16 upwardly ex tending therefrom, bearing on the under surface of the body bolster. At the upper 'end,-each side wall 13 is provided with a sector shaped opening 17 centrally thereof,

the openings v17 in the opposite walls being in alinement and adapted to accommodate the fingers C for swinging movement. The thickened portion 16 of the top wall is .cut away at opposite sides as clearly shownin Flgure 2, thereby providing a flat surface 18 at each sideof the housing spaced inwardly from the inner surface of the corresponding side walls.

The anti-friction element B is of the roller type. The roller is provided at each end thereof with a laterally projecting, relatively heavy, annular, peripheral flange 19 for a purpose hereinafterdescribed. I

The fingers C are two in number and of like construction, eachhaving an inwardly projecting boss 20 at the upper end and an inwardly projecting lug 21 at the lower end thereof. The fingers G are pivotallyqsupported at opposite sides of the housing A bythepin D extending through alined openings in the thickened portion 16 of the wall 12 and the bosses 20 of the respective fingers, the opposite ends .ofthe pin being headed over to retain the fingers in operative posil.

tion. "The fingers are thus pivotally supported for swinging movement in the recesses 17 of the side walls 13, the recesses each being of ample size to provide sufficient clearance to permit the necessary movement of the respective fingers. The lug 21 at the lower end of eael finger projects into the opening defined by the annular flange 19 at the corresponding endof the roller; Each lug "21 has the opposite sides thereof cut away along upwardly converging planes,

thereby-providing a knife edge 22 atthe wardly curved surface adapted to co-act with 'F and the bolster. v

the roller. The plate F is secured to the upper surface of the truck bolster by rivets or any other suitable fastening means, a supporting block 23 having a convex upper surface being interposed between the plate On the approach of the bolsters toward each other, the, lower side of the roller will be brought into contact with the upper surface of the plate F on the truck bolster and the under-surface of the plate Eiwill next be brought. into contact with'the upper side of the roller. During the'relative approach of the bolsters,-the knifeedges of the fingers will be moved initially out of contact with the flanges 19, as will be obvious. Upon relative radialshifting movement of the body and truck bolsters, the anti-friction element B will be rolled, as for example, to the dotted line position shown at the'left of Figure .1, the same being limited in its movement by engagement with the adjacent right hand end wall 14 of the housing, as shown by the dotted line position of said end wall and indicated at 15%., During the rolling movement of the element B, the fingers will be swung to the rightby engagement with the flanges 19, as shown in dotted lines of Figure 1. I

Upon separation of the bolsters, or removal of the pressure upon the; anti-friction element, the fingers C,.due to the weight of the roller then suspended thereby, will swing to central position under the influence of gravity, and. the roller, being supported by the flanges 19 on the knife edges 22 of the fingers for free swinging movement relative thereto, will also swing to centered position with reference to the fingers.

'From the preceding description, taken in connection with the drawing, it will be observed that, at the initiation of the return movement of the parts to normal position upon removal of the actuatingpressure, the

pendulum fingers are free to swing toward their normal depending positionand als the'roller is freeto swing about the fulcruiil points of the 'pendulums without interference with the lower bearing surface. In my arrangement, it will also be seen that the points of engagement between the pendulum fingers and the over-hanging flanges of the roller are constantly shifting so that different portions .of the surface of the roller are always being presented for service, to thereby prolong the life of the bearing. Another feature of my invention resides in the particular formation of the fulcrum support lugs 21. By converging'the surface upwardly to a fulcrum knife edge, it will be seen that greater clearance is left between thelugs and the over-hanging flanges, there by permitting greater travel of the roller for a given swing of the pendulumelements,

as will be observed from an inspection of the dotted line positions of the parts shown a housing; of an anti-friction roller within the housing, said roller having annular side flanges; a pair of fingerspivotally connected to said housing and provided with knife edge supporting means adapted to engage underneath the respective flanges at the upper side of the roller to swingingly support the same.

2. In a side-bearing, the combination with a retaining member adapted to .be secured to the underside of a body bolster and having an upperbearing surface; of an anti-friction rolling element proper; and means providing a'pendulum support for said element from said retaining member when said element is in normal position and free from load, said means being disengaged from said element and becoming temporarily inoperative to support said element, said element having a bearing face co-operating withthe pendulum means when load is applied to said element and again becoming, operative to engage a different portion of said bearing face when the anti-friction element is moved a predetermined distance to either side of normal position,.whereby the bearing portions of the rbller are shifted'to present new portions to engage with the bearing surfaces.

3. In a side bearing for railway cars, including a body and truck bolster having opposed bearing surfaces thereon, the combination with a housing; of an anti-friction element within the housing, said element having a curved supporting surface thereon; and a finger plvotally connected to said housing and provided with a projection bearing surface of the anti-friction element also adapted to be engaged by an opposed bolster; a pendulum element swingingly hung from said retaining member and having a supporting edge thereon engaging beneath said sup porting-surface to swingingly suspend the anti-friction element free of said first named bearing surface and the opposed bolster at all times except when under load, the supporting means on said pendulum element and said bearing surface being arranged to permit movement of said anti-- friction element to temporarily free said supporting edge of the pendulum when the anti-friction element is under load and permit rearrangement of said supporting edge with a different portion of the supporting surface of said anti-friction element when said last named element has been moved a predetermined distance to either side of its centered position, thereby supporting said anti-friction element in a different position when the same is free from load, thereby presenting different bearing areas to said first named bearing surface and said opposed bolster. I

5. In a side bearing of the character described, adapted for use with body and truck bolsters of railway cars, the combination with. means on said body and truck bolsters presenting oppo ed bearing surfaces; of an anti-friction element adapted to co-act with said bearing surfaces when said bolsters approach each other, said element being movable to either side of centered position; pendulum means swingingly supported on the body bolster for centering said antifriction elementrand a connection between said pendulum means and said anti-friction element for normally supporting said element in suspended position, spaced from the bearing surfaces of both the body and the truck bolsters, and permitting vertical movement of the anti-friction element to disengage the same from said connection,-

whereby said anti-frictionelement is temporarily disengaged from the pendulum connection upon relative approach of the bolsters to permit the'p'endulum means to remain quiescent while said anti-friction element moves relatively thereto under load and said connecting means to re-engage with a difi'erent portion of said anti-friction ele ment when said element is shifted to either side of centered position to bring a different portion of the bearing surface of the anti-friction element into co-operating relation with the body and truck bolster bearing surfaces when said anti-friction element is freed from load. I

In witness that I claimthe foregoing I have hereunto subscribed my name this 26th day of November, 1923.

' ARILD M. BRENNE.

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