US1290322A - Roller side bearing. - Google Patents

Description

ROLLER SIDE BEARING.

APPLICATION FILED FEB. 16. 1918.

J. F. OCONNOR.

Patented Jan. 7, 1919.

INVENTOR. John/F0 rznor To all whom it may concern:

UNITED STATES, PATENT OFFICE.

roam r. ocomwon, or CHICAGO, 1 L1iwo1s,.Ass1euon TO WILLIAM H. MINER, or

, c mzY, NEW "201m.

ROLLER smr: BEARING.

Be i known that I, JOHN F. UCoNNoR, a citizen of the United States, residm Chicago, in the county of Cook and tate of llllinois, have invented a certain new and useful Improvement in .Roller Side Bearings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawmgs', forminga part of this specification- This invention relates to improvements in roller side bearings. v In the operation and construction of railwvay cars, it is customary to employ antifriction roller side bearings between the ends of the body and truck bolsters to thereby minimize the friction when thetrucks swivel with respect to the car body and also to prevent undue swaying of the car body relatively to the trucks. In many instances, it has been found advisable to render these anti-friction roller side bearings ad1ustable in such a way as to always insure a true line contact between the anti-friction rollers and the opposed engaging surfaces. The general practice to accomplish the last named I object has been to employ a rockalbly mounted cradle to carry the anti-friction roller so that the anti-friction roller could oscillate or swing. as an entirety about an axis transverse to the axis of rotation of the roller.

One object of my invention is to provide an anti-friction roller side bearing, which will accomplish the same results as are accomplished by those structures employing rockably mounted cradlefor carrying the anti-friction roller and which at the same time will avoid the necessity of uslng the cradle or any extramember corresponding thereto.

Another and more specific object of the invention is to provide an anti-friction roller ill") bearing comprises merely the anti-friction to body and truck side hearing, more particularly adapted for railway cars wherein the antl-frictlon roller is adjustable to compensate-for variations in the angle between the opposed bearing surfaces of the .bolsters and wherein the side Specification of Letters instant.

Patented Jan. 7, 1919.

Application filed February 16, 1918. Serial No. 217,514.

proved side bearing in connection therewith.

, and 11 denotes the under portion of an op posed body bolster, it being understood that the two bolsters are pivotally connected at their centers in the usual manner.

The improved side'bearing, as shown, comprises a base or retaining casting A and an anti-friction roller B. I

The base casting A is shown as of hollow, substantially rectangular form with end walls 1212, side [Walls l3--13 and base flanges 1414 by'which it is adapted to be riveted to the body bolster. Each of the side walls 13 is provided with a hollow lat: erally extended cup-shaped enlargement l5 suitably braced as by a flange 16, said '-'cu pshaped enlargement on its inner side being of substantially conical form except that the surface is curved "on the arc of a circle, as indicated at 17, when any section is taken therethrough. I

The roller. B is of cylindrical form with its upper surface extending above'the topof the base casting A and at each side thereof,the roller B is'provided with preferably integral laterally extended trunnions 1818, said trunnio s 18 being also of substantially conical for with the exception that the sur-. faces thereof are also curved, as indicated at 19, on radii corresponding to the radius of {curvature of the interior surfaces 17 of the bearings provided in the casting A. As

clearly shown in Fig. 2, the trunnions 18 do not fully occupy the space provided therefor in the bearings of the base casting, but on thec'ontrary, clearance is left between the ends of the trunnions and the opposed end walls of the bearings sufficient to permit the roller B as an entirety to oscillate or adjust itself about an axis perpendicular to the axis of rotation of the roller B. The upper walls of the hearings in the base casting are suitably cut away, as indicated at 20, to permit the roller with its trunnions to be dropped into place, and it will be noted also that the width of the roller is less than they space between the side walls of the base casting so as to permit the oscillatory movements of the roller B, hereinbefore mentioned.

In operation, it is apparent that the roller B is free to rotate about its axis and at the same time should the bearing surface 21 thereabove assume a" position at an angle to the upper surface of the opposed truck bolster, the pressure on the roller B will automatically cause the latter to adjust itself in the conical bearings provided therefor about an axis perpendicular to thetaxis of rotation of the roller. By employing the curved bearing surfaces, hereinbefore described, it is evident that a true surface bearing contact will always be maintained be:

manner of carryingrout the invention, the

same is merely illustrative and I contemplate all ,changes and modifications that come within the scope of the claims appended hereto.

I claim:

1. In a roller bearing, the combination with a retaining and supporting member, of a roller mounted in said member and having laterally extended trunnions, said memher being providedwith bearings; for said trunnions, said trunnions and bearings being both curved lengthwise thereof to thereby permit the roller and said trunnions to oscillate as a unit about an axis perpendicular to the axis of rotation of the roller.

2. In a roller bearing, the combination with a hollow retaining casting having spaced side walls, said side walls being provided with hollow bearings curved lengthwise thereof, of an anti-friction roller having laterally extended trunnions, said trunnions being curved lengthwise thereof to correspond with the curvature of said bearings, there being clearance between'the ends of said trunnions and the ends of said bearings to thereby permit said trunnions to shift endwise within said bearings.

3. In a roller bearing, the combination with a. hollow retaining casting having I spaced side walls, said side walls being provided with hollow bearings curved lengthwise' thereof, of an anti-friction roller having laterally extended trunnions, said trunnlons belng curved lengthwise thereof to correspond with the curvature of said bearings,

therebeing clearance between the ends of said trunnions and the ends of said bearings to thereby permit said trunnions to shift endwise within said bearings, said trunnions being formed integrally with the roller.

In witness that I claim the foregoing I have hereunto subscribed my. name this 7th day of Feb., 1918.

JOHN F. OCONNOR.

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