Snubbed railroad car truck

A truck for a railroad car comprising,

• a pair of spaced side frames, each said side frame including,
• a side frame window in part defined by spaced sidewalls, a top compression member, and a bottom tension member,
• vertical ribs formed on an inner and an outer side of each said side frame, said ribs located one each adjacent to said side frame window sidewalls and defined in part by a flat vertical front surface and side surface, and
• a pedestal jaw formed at ends of each said side frame, said jaw defined by spaced vertical sidewalls and a roof surface having a laterally concaved configuration,
• bearing adapter means disposed one each in said pedestal jaws to receive in a journaled relationship axle ends of wheelsets of said truck respectively, said adapter means having spaced vertical end walls positioned adjacent to and spaced from said pedestal jaw sidewalls sufficient distance to limit relative horizontal rotational movements between said wheelsets and said side frames to a position slightly out-of-square by interengaging contact between said adjacent pedestal jaw end walls and said adapter sidewalls, and a top surface having a convex configuration having a radius less than a radius of said concave roof surface of said pedestal jaw, said top surface of said adapter means and said roof surface of said pedestal jaw joining to form a rollable self-centering joint between said adapter and said side frame,
• an elongated bolster positioned transversely to and between said spaced side frames with ends disposed one each in said side frame window and resiliently supported therein by spring means carried by said tension member of said window, each said bolster end including a front and a rear recess having a bolster pocket prepared to receive a snubbing device, offset vertical sidewalls located adjacent to and on each side of said bolster pocket, and opposing convex-shaped end walls, said front and said rear recesses forming a vertical guide for said sidewalls of said side frame window with said ribs engaging with said convex-shaped end walls of said bolster recess to form a rollable joint between said side frame and said bolster, and
• snubbing means disposed one each in said bolster pockets to in part maintain said bolster and said side frame in a square relationship and to limit yaw movement therebetween.