the control element and locking the doors of a tremie a railway wagon is tremie

摘要

A door actuating and locking apparatus for pairs of hopper doors 20, 21 of a railroad hopper car 1 of the type having a plurality of hopper doors arranged in opposed pairs and extending transversely of the hopper car center sill 7. The hopper doors of each pair are swingable between a downwardly depending open position and a closed position wherein their bottom edges meet in abutting relationship. Each door actuating and locking apparatus for each opposed pair of hopper doors comprises a shaft assembly 65 extending transversely of the hopper car between its respective opposed pair of hopper doors and through the hopper car center sill 7 and the inner and outer hopper sheets for those hopper doors. That portion of the shaft assembly located within the center sill has an L-shaped lever structure non-rotatively mounted thereon and the lever structure is connected by links to the hopper doors of its respective pair. Either end of the shaft assembly can be engaged externally of the hopper car by an appropriate tool to rotate the shaft assembly and its lever structure between a door closed position and an over-center, door-closed and locked position. Each hopper door is provided with a spring assisted mechanism 62, 63. IMAGE