Railway car center bearing

Claim 2

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim; a bearing insert with a convex upper surface located within the rim, said insert being spaced from the inner circumferential surface of said rim and being movable within the bowl in a generally horizontal plane relative to said rim, and a body bolster having a concave center plate mating with said convex bearing insert and supported thereof for relative rotative movement about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex bearing insert while remaining seated on said insert.

Claim 3

In a center plate structure for a railway car as set forth in claim 1, a wear plate within the center plate bowl and secured therein, said bearing insert being freely floating within said bowl and being supported on said wear plate for back and forth movement relative to said bowl.

Claim 4

A center plate structure according to claim 1 wherein a center pin passes through said center plate bowl, said bearing insert and said concave center plate.

Claim 5

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within said rim, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, and a body bolster having a concave center plate mating with said convex insert and supported thereon for relative rotative moment about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert, and at least one side bearing spaced from said center plate bowl comprising resilient means engaging said truck bolster and body bolster to urge the latter to a horizontally stable posture.

Claim 6

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within said rim, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, and a body bolster having a concave center plate mating with said convex insert and supported thereon for relative rotative moment about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert, and at least one side bearing spaced from said center plate bowl comprising resilient means engaging said truck bolster and body bolster to urge the latter to a horizontally stable posture.

Claim 7

In a center plate structure for a railway car as set forth in claim 4, a wear plate within the center plate bowl and secured therein, said bearing insert being freely shiftable within said bowl and being supported on said wear plate for back and forth movement relative to said bowl.

Claim 8

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within the rim, the convex surface being struck from a radius having a minimum length at least as great as the diameter of said center plate bowl, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, and a body bolster having a concave center plate mating with said convex insert and Supported for relative rotative movement about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert.

Claim 9

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within the rim, the convex surface being struck from a radius having a minimum length at least as great as the diameter of said center plate bowl, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, and a body bolster having a concave center plate mating with said convex insert and Supported for relative rotative movement about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert.

Claim 10

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within the rim, said convex surface being struck from a radius having a minimum length at least as great as the diameter of said center plate bowl, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, a body bolster having a concave center plate mating with said convex insert and supported for relative rotative movement about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert, and at least one side bearing spaced from said center plate bowl comprising resilient means engaging said truck bolster and body bolster to urge the latter to a horizontally stable posture.

Claim 11

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim, a bearing insert with a convex upper surface located within the rim, said convex surface being struck from a radius having a minimum length at least as great as the diameter of said center plate bowl, said insert being spaced from the inner circumferential surface of said rim and movable within the bowl in a generally horizontal plane relative to said rim, a body bolster having a concave center plate mating with said convex insert and supported for relative rotative movement about a generally vertical axis, said concave center plate adapted to tilt in a generally vertical plane relative to said convex insert while remaining seated on said insert, and at least one side bearing spaced from said center plate bowl comprising resilient means engaging said truck bolster and body bolster to urge the latter to a horizontally stable posture.

Claim 12

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim and a bearing insert having a convex upper cylindrical surface within the rim, said insert being spaced from the inner circumferential surface of said rim and movable in a generally horizontal plane relative to said rim, a body bolster having a center plate with a concave cylindrical surface mating with said insert and supported thereon for relative rotative movement about a generally vertical axis, and interfitting guide means on said concave center plate and said insert extending in a direction generally transversely of the car to align properly the mating cylindrical surfaces for tilting of the body center plate unidirectionally transversely of the car relative to said insert, said mating cylindrical surfaces restricting tilting of the center plate in directions other than transversely of the car.

Claim 13

In a center plate structure for a railway car, a truck bolster having a center plate bowl facing upwardly, said bowl having an outer circular rim and a bearing insert having a convex upper cylindrical surface within the rim, said insert being spaced from the inner circumferential surface of said rim and movable in a generally horizontal plane relative to said rim, a body bolster having a center plate with a concave cylindrical surface mating with said insert and supported thereon for relative rotative movement about a generally vertical axis, and interfitting guide means on said concave center plate and said insert extending in a direction generally transversely of the car to align properly the mating cylindrical surfaces for tilting of the body center plate unidirectionally transversely of the car relative to said insert, said mating cylindrical surfaces restricting tilting of the center plate in directions other than transversely of the car.

Claim 14

In a center plate structure for a railway car as set forth in claim 8, said interfitting guide means comprising an upstanding rib on the upper surface of said convex bearing insert extending in a direction transversely of the car and a mating groove in the lower concave cylindrical surface of said body center plate receiving the rib in a nesting relation.

Claim 15

In a center plate structure for a railway car as set forth in claim 9 said groove being of a depth greater than the height of said rib to space the rib from the surface defining the groove.