Elastomeric railway car side bearing

Claim 2

A railway car side bearing structure comprising a lower cupshaped member for mounting on a truck bolster and an upper inverted cup-shaped member for engagement with a car body bolster, said members being circular in cross section and telescopingly assembled for relative vertical movement and provided with interengagable elements to positively limit their relative rotary movement and vertical movement, and an elastomeric pad spaced from the sides of said members to accommodate lateral deformation of said pad initially compressed vertically between said members to thrust said members apart, said pad being further compressible under load.

Claim 3

A railway car side bearing structure as described in claim 1 which includes means positively holdiNg the elastomeric pad against rotation about its vertical axis relative to the cup-shaped members.

Claim 4

A railway car side bearing structure as described in claim 1 in which metal wear plates are bonded to the lower and upper faces of the elastomeric pad and are interlocked against relative rotation about their common axis relative to the lower and upper cup-shaped members respectively.

Claim 5

A railway car side bearing structure as described in claim 1 comprising a lower cup-shaped member for mounting on a truck bolster and an upper inverted cup-shaped member for horizontal sliding engagement with a car body bolster, said members being telescopingly assembled for relative vertical movement, in which the upright side of the lower member has an L-shaped recess extending downwardly and then laterally from the upper edge of the member, and the upper member has a depending finger exteriorly of said upright side and terminating in a radially extending ear received in said recess and holding the members against separation and against rotation about their vertical axis.

Claim 6

A railway car side bearing comprising a base member and a cap member, an elastomeric pad compressed between said members, said base member having an upstanding circular wall surrounding said pad and spaced therefrom, said cap member having a depending circular wall surrounding said upstanding wall and spaced therefrom, said upstanding wall having a rim forming external downwardly facing horizontal shoulders, said depending wall having spaced inturned horizontal ears, normally engaging said shoulders, there being vertical slots in said shoulders corresponding in width to said ears and accommodating movement of said ears therethrough, when aligned therewith, for assembly and disassembly of said members.

Claim 7

A railway car side bearing comprising a base member and a cap member, an elastomeric pad compressed between said members, said base member having an upstanding circular wall surrounding said pad and spaced therefrom, said cap member having a depending circular wall surrounding said upstanding wall and spaced therefrom, said upstanding wall having a rim forming external downwardly facing horizontal shoulders, said depending wall having spaced inturned horizontal ears, normally engaging said shoulders, there being vertical slots in said shoulders corresponding in width to said ears and accommodating movement of said ears therethrough, when aligned therewith, for assembly and disassembly of said members.

Claim 8

In combination in a railway truck and body, a center bearing providing support for the car body on the truck, and yielding side bearings including vertical yielding elastomeric pad spaced transversely of the truck from the center bearing and having a predetermined loading and affording limited constant resistance to tilting of the body on the center bearing irrespective of the load on the side bearing.

Claim 9

In combination in a railway truck and body, a center bearing providing support for the car body on the truck, and yielding side bearings including vertical yielding elastomeric pad spaced transversely of the truck from the center bearing and having a predetermined loading and affording limited constant resistance to tilting of the body on the center bearing irrespective of the load on the side bearing.

Claim 10

The combination of a railway truck and body as described in claim 6 in which the increased load on one of the side bearings produces increased resistance to swiveling of the truck about the center bearing on the truck bolster and center plate on the body.

Claim 11

A railway car side bearing unit comprising a lower cup-shaped member for mounting on a truck bolster and an upper inverted cup-shaped member for horizontal sliding engagement with a car body bolster, said members being telescopingly assembled for relative vertical movement, in which one of said members has an L-shaped slot in its side wall opening inwardly from the edge thereof and the other member has a finger projecting from its wall through the first-mentioned member and terminating in a horizontal lug entering said slot and positively preventing rotation of said members about their common vertical axis.

Claim 12

A railway car side bearing unit comprising a lower cup-shaped member for mounting on a truck bolster and an upper inverted cup-shaped member for horizontal sliding engagement with a car body bolster, said members being telescopingly assembled for relative vertical movement, in which one of said members has an L-shaped slot in its side wall opening inwardly from the edge thereof and the other member has a finger projecting from its wall through the first-mentioned member and terminating in a horizontal lug entering said slot and positively preventing rotation of said members about their common vertical axis.