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US 4,103,623 AGranted
Squaring frictionally snubbed railway car truck
AssigneeAMSTED Industries Incorporated
InventorRobert P. Radwill
Life of this patent
Estimating the term…
Abstract
A friction shoe is provided on a railway car truck to frictionally engage both the side frame column and bolster in order to control the oscillating movement of the latter. The interfaces between the friction shoe and its reaction surfaces on the side frame and bolster are arranged so that initial contact is made against surfaces adjacent the lateral ends of the shoe, thereby providing the maximum restraining moment to resist lozenging of the truck.
Claims9
A truck squaring apparatus for a railway car truck comprising:
- a side frame having a column a relatively vertically movable bolster supported adjacent thereto;
- a friction surface on said column;
- a friction shoe pocket having a guiding surface on said bolster a friction shoe disposed in said pocket and having a first wall engageable with said friction surface on said column and a second wall engageable with said guiding surface;
- said respective engaging surfaces and walls having a transversely disposed recess intermediate spaced ends thereof and extending in the direction of relative movement so that initial contact between said engaging surfaces and walls is made adjacent said spaced ends of said walls.
1 more element
Dependencies are inferred from the claim text.