US1357799A - Rocker side bearing - Google Patents

Description

J. F. OCONNOR.

ROCKER SIDE BEARING. APPLICATION FILED ]AN.20 1919.

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ROCKER SIDE BEARING.

APPLICATION FILED lAN;20| 1919.

1,3571799. Pat entedNov. 2,1920.

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JOHN ll. OCONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OF

CHAZY, NEW YORK.

ROCKER SIDE BEARING.

Application filed Januar 'ee, 1919. Serial No.

To all whom it may concern:

Be it known that L Jonn F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Rocker Side Bearings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in rocker side bearings.

One object of the invention is to provide a rocker side hearing more particularly adapted for railway cars and which is arranged to be secured to the body bolster, the rocker being freely suspended and adapted to return to central or normal position under the influence of gravity upon release of the actuating pressure.

Another object of the invention is to provide a rocker bearing of the type above i11- dicated wherein the rocker is bodily mov able with respect to its housing and yet so arranged that it cannot be displaced by jarring or vibration from its normal position beyond a predetermined limited amount, the permissible limited amount of displacement being so restricted that the rocker will be in condition to function through an are substantially as great as if in its central normal position.

In the drawings forming a part of this specification, Figure 1 is a vertical, sectional view taken transversely through the ends of the truck and body bolsters of a car and showing my improvements in connection therewith. Fig. 2 is a horizontal, sectional view taken substantially on the line 2-2 of Fig. 1. Fig. 3 is a vertical, sectional view taken substantially on the line .3-3 of Fig. 1. Fig. 4t is a view similar to Fig. l but illustrating a somewhat diiierent embodiment of the invention. And Fig. 5 is a vertical, sectional view taken substantially on the line 5-5 of Fig. l.

In said drawing, 10 denotes the upper section of a truck bolster and 11 the lower section of an opposed body bolster and between which my improved rocker bearing is adapted to be employed. The hearing, as shown, comprises broadly, a housing A, a wear or thrust plate 13, a rocker C, a pair of plates D-D and a pair of disks E-E.

The housing A is of substantially hollow Specification of Letters Patent.

Patented Nov. 2 1820.

rectangular formation having end walls 1212 and side walls l313. The housing is preferably in the form of a casting open at top and bottom and is provided with suitable lugs lat by which it can be secured to the body bolster. At the top on its interior, the housing A is provided with ledges 15--15 arranged to hold the plate against the body bolster, as clearly shown in Fig. 1. The plate 13 may have a steel insert 16 to take the direct pressure of the roe :er, as will be understood. The side walls 13 of the housing are formed with in wardly extending flanges 17 at their lower edges, as clearly indicated in Fig. 3, said flanges forming supporting ledges for the plates D and disks E.

The rocker has an upper curved hearing surface 18 concentric with but of shorter radius than the lower curved bearing surface 19. The two bearing surfaces 18 and 19 are joined by flat faces 20 preferably arranged tangential to the upper bearing sur face 18. At each end, the rocker U is provided with trunnions 21 arranged concentric with the upper bearing surface 18. To lessen the amount of metal required for the rocker, the same may be cored, as indicated at 22 and 23.

Each plate D is of generally triangular formation having a lower horizontal edge 24- and inclined edges 2525. There are relatively short vertical end edges 26-26 and also a horizontal top edge 27. On the face of each plate D adjacent the rocker, there are provided vertical flanges 28-28 spaced apart a distance corresponding to the diameter of the trunnions of the rocker and the latter are seated within the guideways formed by the flanges 28 as apparent from an inspection of Figs. 1 and 2.

Each of the disks E is of the same diameter as the trunnions 21 and are equal in thickness substantially to the distance which the trunnions extended from the body of the rocker G. The disks 'E, as clearly shown in Figs. 1 and 3, are also seated within the guideways formed by the flanges 28 of the plates D and the disks roll upon the flanges 1'? of the housing.

The operation is as follows: Assuming the rocker bearing to be brought into play when the rocker is in normal position and the body bolster remaining stationary while the truck bolster moves to the right, as viewed in Fig. 1, it is evident that the rocker will assume the dotted position shown in Fig. 1. During this movement, it is evident that the common center of the bearing surfaces 18 and 19 and of the trunnions 21 will move horizontally a comparatively short distance. This movement of the rocker will force the plates D toward the right hand end of the housing A until the plates D assume the dotted position also shown in Fig. 1. The disks E will naturally travel with the plates D. In this connection, it may be added that the end walls of the housing A are preferably provided with inwardly projecting shoulders 3030 formed on their under sides to correspond with the rocker and limit the upward movem nt thereof. If new the pressure on the rocker bearing is relieved,

the rocker will naturally tend to swing back to a state of equilibrium and the weight thereof will be t 'ansferred through the trun- 'nions 21 onto the disks E, and as the trunnions are rotated by the swinging movement the rotative movement will be communicated to the disks E and the latter will roll along the supporting flanges 17, thus bringing the plates D, rocker and disks E back to their original position since the diameters of the disks E and trunnions 21 are equal. As will be understood from the preceding description when considered in connection with Figs. 1 and 3, the rocker is normally slightly separated from the upper bearing plate so as to permit the return movement above described.

By referring to Fig. 1, it will be noted that there is a relatively small space between the vertical edges 26 of the plates D and the end walls ofthe housing A. Because of this, it is impossible for the plates D to be shifted from normal position by jarring or vibra tion more than the space between a vertical edge 26 and adjacent end wall. Even though this amount of displacement should occur from vibration and while the rocker is not being actuated, nevertheless if .the rocker is brought into play when the plates D are displaced to their maximum, the rockers will still have a permissible swinging movement only slightly less than the permissible movement from the central normal position of the rocker. With this arrangement, it is impossible to displace the rocker to an amount where it will not properly function.

i In the construction shown in Figs. 4r and the arrangement of housing A, plate l3 androcker Z1 is the same as in Figs. 1, 2 and 3. Instead of employingthe plates D, however, Inlay employ two elongated bars :D D having studs 31 on which are rotatranslating oscillating .witn a longitudinally extending day of Jan; 1919.

tably mounted two disks E, the latter being of the same diameter as the studs on the rocker. In this construction, as in the construction first described, the bars D are limitedin the amount of possible displacement so that the rocker will always function. When the rocker has been actuated to the position indicated by dotted lines inl ig. i, it is evident that the return swinging movement of the rocker will be communicated to all four disks E and the latter together with the bars D returned to their original position as in the case of the plates D.

I claim: V a

1. In a rocker side bearing, the combination with a housing adapted to be secured to a body bolster, of a rocker within said housing having'upper and lower concentric bearing surfaces of different radii, trunnions formed on the ends of said rocker concentric with the upper bearing surfaces thereof, members within said housing and supported by the latter, said members being movable lengthwise of the housing, and means for iovement of said rocker to lineal movement of said members, said means including rotatable disks cooperable with the trunnions of the rocker.

2. In an anti-frictiori bearing of the character described, the combination witha hoi low housing having depending side walls each of which is provided at its lower edge ledge; of members lineally slidable back and forth on said ledges, said members being provided on their inner faces with guiding grooves;

tending within and cooperating with said grooves; and rolling supporting elements for said trunnions sustained on said ledges. 3. In an anti-friction bearing of the character described, the combination with a hollow substantially rectangular housing adapted to be'secured to the under side of a body bolster or the like, the sidewalls of said housing being provided at their loweredges with horizontally extendingledges; of a member lineally slidably mounted on each of said ledges, each of said members having a vertically extending groove therein onits inner face; a disk supported on each-ledge and disposed within one of said grooves; and a rocker having trunnions at the top thereof at each end, said trunnions extending within said grooves and supports-don said disks. I p

In witness thatl claim theforegoing I have hereunto subscribed'my' name this 2nd JOHN F. OCONNOR.

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