Abstract: A hinge assembly for pivotally interconnecting a door to a trailer body is disclosed. The hinge assembly includes a hinge plate having a mounting portion and a hinge portion. The mounting portion of the hinge plate is configured to permit attachment to the door, while the hinge portion of the hinge plate defines an elongated closed passage opening at opposite ends thereof. Bearing structure is non-rotatably accommodated within the passage for forming a bearing connection between the hinge plate and a pivot member endwise extending through the hinge portion of the hinge plate. The bearing structure includes a cap formed integral therewith and extending from opposite ends of the passage.

Abstract: A gate assembly for a hopper car having an enclosure for holding and transporting particulate matter and a plurality of openings along a bottom of the car through which particulate matter is discharged. The gate assembly is designed to allow for either pneumatic discharge of the particulate matter as a result of pressure differentials applied to the outlet on the hopper car or gravitational discharge of the particulate matter through a covered discharge plenum depending from a discharge opening defined by the frame of the gate assembly. The gate assembly further includes seal structure and a gate mounted on the frame for elevational movements between sealed and unsealed conditions and for sliding movements between open and closed positions. The gate assembly further includes a mechanism for arranging the frame, the gate and the seal structure in sealed relationship relative to each other such that a gage pressure of up to 15 psig.

Abstract: A discharge gate assembly for a railway hopper car that satisfies the new AAR requirements and specifications and includes a frame defining a generally rectangular discharge opening with a gate slidably mounted on the frame for endwise horizontal movement between opened and closed positions. An operating shaft assembly is supported on opposite frame extensions for rotational movement about a fixed axis. The operating shaft assembly is operably coupled to the gate. A lock assembly is operably coupled to the operating shaft assembly and includes a vertically displacable stop member mounted for vertical and rotational movement about a fixed axis extending above the path of movement of the gate and in fore-and-aft relationship relative to an edge of the gate. When the gate is in its closed position, the stop member extends downwardly and into engagement with the gate edge to positively prevent the gate from substantial movement toward an open position.