Abstract: A safety apparatus (10) includes a weight pan (18) removably receiving a plurality of weights (W) pivotably mounted about a pan axis (A) between frame sides (12). Wheels are rotatably mounted to the first ends of the frame sides (12). An I-shaped main frame (40) is pivotably mounted to the frame about a first frame axis (J) generally perpendicular to the pan axis (A) and also a second frame axis (E) generally parallel to the pan axis (A). By pivoting the main frame (40) about the first frame axis (J), a steering function is provided to the frame. By pivoting the main frame (40) about the second frame axis (E), the frame is pivoted between an actuated position with the weight pan (18) resting upon a surface and a transport position with the weight pan (18) spaced from the surface and with the frame moveable on the surface (102).

Abstract: A mechanism for controlling opening of doors on a hopper car underside. The mechanism includes a pair of stationary hook assemblies located outboard of a discharge opening and having a proximal end affixed to the hopper car and a distal free end. Each hook assembly includes a locking cavity bounded by a cam locking surface and a distal slide surface. Included also is a pair of locking cam assemblies having an upper and lower cam surface matable with the hook cam locking assembly and having a slot. An elongate member has ends affixed to the pair of locking cam assemblies and extends through each of the annular end bearings. A pair of annular end bearings is disposed adjacent to the locking cam assemblies and each affixed to a door.

Abstract: A mechanism for controlling opening of doors on a hopper car underside. The mechanism includes a pair of stationary hook assemblies located outboard of a discharge opening and having a proximal end affixed to the hopper car and a distal free end. Each hook assembly includes a locking cavity bounded by a cam locking surface and a distal slide surface. Included also is a pair of locking cam assemblies having an upper and lower cam surface matable with the hook cam locking assembly and having a slot. An elongate member has ends affixed to the pair of locking cam assemblies and extends through each of the annular end bearings. A pair of annular end bearings is disposed adjacent to the locking cam assemblies and each affixed to a door.