Truck side frame and bolster connection
AssigneeDresser Industries, Inc.
InventorGeoffrey Wilton Cope
Life of this patent
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Abstract
A freight car truck side frame-bolster connection which provides self-squaring or self-tramming forces by resilient means incorporated in bearing shoes that cooperate with the bolster ends and the side frame window opening to produce the desired results. Also, the provision of the resilient squaring force is accomplished while maintaining the ability to shim at the bolster ends for adjustment of car height, and without the need for close tolerances.
Claims7
In a railroad freight car truck having side frames interfacing with a bolster, said side frames having a bolster window formed by an upper compression member, a lower tension member and a pair of vertical columns for receiving bolster ends, the improvement comprising the bolster ends having a convex undersurface supported within the window by resilient pad means conforming to its surface and a concave surface on the tension member to provide positive squaring at the side frame -- bolster interface.
Dependencies are inferred from the claim text.