US1453661A - Shim for center-bearing plates - Google Patents

Description

May l, 1923. 1,453,661

c. E. DATH SHIM FOR CENTER BEARING PLATES Filed Feb. 16, 1920 Patented May 1, 1923. v v

CHARLES E. DATH, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM E. MINER, OF

CRAZY, NEW YORK. i

SHIM FOR CENTER-BEARING PLATES.

Application led February 16, 1920. Serial No. 359,042.

To all whom t may concern.'

Be it known that I, CHARLES E. DATH, 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 Improve-ment in Shims for Center- Bearing Plates, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this speciication.

This invention relates to improvements in shims for center bearing plates.

In the ope-ration of railway cars, it is the general practice to form the body bolster center bearing plate and the truck bolster center bearing plate with co-operating male and female formations so as to prevent rela-- tive lateral shifting between the center bearing plates and thereby prevent shearing of the king pin. As is well known, these center bearing plates are subjected to heavy pressure and consequently rapid wear and in addition, a certain amount of sagging frequently' takes place in the body of the car both of which contribute to decrease the spacing between the outer ends of the bolsters beyond a pre-determined minimum limit provided for by Master Car Builders and Interstate Commerce Commission regulations. To compensate for the wear and sagging or distortion mentioned and separate the car body from the truck the required distance, it has been customary to interpose shims 0r wearing plates between the center bearing plates. S0 far as I am aware, such shims or wear plates have always heretofore involved an oif-set shoulder at the center thereof to lit over the male formed center bearing plate and within the female formed center bearing plate. Shims or wear plates of the character indicated, one ex: ample Vof lwhich is shown in Hennessey Patent 1,009,306 of November 21, 1911, cannot be made beyond a certain minimum thickness because of the fact that it is necessary to provide suicient metal between the inner and outer vertically extending faces of the central off-set to prevent shearing.

Consequently, such shims or wear plates of the prior art cannot be used where a relatively thin spacer is required between the center bearing plates or, if such shims of the prior art are employed, the result is to space the center bearing plates and hence the car body from the trucks, a greater distance than is necessary which in itself is substantially as undesirable as the too close spacing of the car body and truck.

The object of my invention is to provide a shim or wear plate or spacer adapted to be interposed Ibetween the center bearing plates of a railway car which shim may be made of any desired thickness and particularly as thin as desired.

In the drawing forming a part of this specification, Figure 1 is a vertical sectional view taken through portions of a body bolster and truck bolster of a railway car at the king pin or center pin and showing my improvements in connection therewith. And Figure 2 is a detailed perspective of my improved shim.

In said drawing, 10 denotes a car body bolster and 11 a truck bolster, both of the same being in the form of castings, as shown in the drawing. To the under side of the body bolster 10 is secured a body center bearing plate 12 and secured to the upper side of the truck bolster 11 is a truck center bearing plate 13. Asis customary, the center'bearing plate 12 is provided with a recess or female socket 14 and the center bearing plate 13 is provided with an up-standing rib or male projection 15 adapted to co-operate with the upper bearing plate 12. The bearing plates 12 and 13 are also provided with opposed co-operating spherical bearing'faces 16--16.

Both bolsters and both bearing plates are centrally perforated to accommodate a center or king pin which, in the instance shown, is of l special form comprising two outer pieces 17 17 and a centralspreader 18. The outer pieces 17-17 are shouldered at their upper and lower ends so as to extend over -corresponding adjacent parts of the two bolsters to thereby prevent vertical separation of the bolsters.

In carrying out lmy invention, I provide a shim or wear plate indicated by thereforence A, the same having a main web'19 of any. desired thickness apd particularly as thin as may be desired, the same being provided with upper and lower surfaces 20-20 corresponding to the spherical bearing surfaces 16-16 of the center bearing plates 12 and 13. The web 19 if my improved shim is centrally perforated as indicated at 21 to accommodate the male projection 15 of the center bearing plate 13. Around its periphery, the shim A is provided with an integral upwardlyextended annular flange 22 overlapping the annular shoulder 23 of the upper bearing plate and also with an integral depending annular flange 24 overlapping the periphery of the lower bearing plate 1f?.

With the construction of shim described, it is evident that relative movement in horizontal planes between the upper and lower center bearing plates is prevented because of the peripheral annular flanges 22 and 24 o f the shim and the web of thev shim may be made relatively thin to thereby obtain the exact spacing required from time to time.

Altho I have herein shown and described what I now consider the preferred manner of carrying out the invention, the same is merely illustrative and I contemplate such changes and modifications as come within the scope of the claims appended hereto.

I claim:

1. A shim adapted to be interposed between the body and truck center bearing plates of a car, wherein the center bearing plates are provided with co-operating male and female formations; said shim having a web of uniform thickness centrally perforated to accommodate the male formation of the center bearing plate therein and provided with upwardly and downwardly extending exterior peripheral annular anges,

'the diametrical distance between ,the interior faces of each of said flanges being substantially the same as the exterior diameter of the bearing face of the correspond ing bearing plate, whereby said flanges are adapted to overlie the peripheral outer faces of the body and truck center bearing plates, respectively, and retain the shim in assembled relation to both of said center bearing plates when interposed therebetween.

2. As an article of manufacture, a shim for center bearing plates of a car, comprising a centrally perforated disc having upper and lower bearing faces co-extensive with the bearing faces of said plates; and annular upwardly and downwardly projecting peripheral ribs surrounding said bearing faces, said ribs being so arranged as to overlie and have the interior faces only thereof, bear on the outer peripheral faces of the body and the center bearing plates, respective-ly, thereby retaining the shim in assembled relation with respect to both of said plates and forming the sole means for preventing movement of said shim in a radial direction relative to said plates when said shim is interposed between said body and truck center bearing plates.

In witness that I claim the foregoing 1 have hereunto subscribed my name this 3rd day of Feb., 1920.

CHARLES E. DA'IH.

Witness META SCHMIDT.

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