Importance

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Abstract

A handrail assembly for access walkways on railway hopper cars is movable between a retracted position, where the assembly is stored for transit, and an extended position where the posts and rails of the assembly are raised to provide a protective barrier. The posts and rails are pivotally interconnected to provide a parallel linkage, each of the posts swinging about an axis that is displaced from a right angle to the longitudinal axis of the walkway. Also, the posts are inclined from the vertical when the assembly is in its extended position. The combined effect of the displacement and the inclination maintains the components of the assembly within allowable clearances and precludes interference with the top surface of the car body. A counterweight arrangement allows the posts and rails to be easily raised manually from one end of the car, and a mechanical lock is provided to positively retain the assembly in either its extended or retracted position.

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First Claim