Abstract: A seat armrest assembly which can be moved from an upright to a stowed position is secured to the armrest of a seating unit. The table assembly includes a support bar which extends through a support sleeve having an internal contour. A table portion is attached to the bar at one end and a blocking piece is attached at the other end. A retaining members, secured to the bar intermediate of the ends, is shaped to correspond to the internal contour of the sleeve. In the upright position the retaining member abuts the inner edges of the sleeve to prevent axial rotation of the bar, thus retaining the assembly upright. The assembly is lowered by disengaging the retaining member from the sleeve and rotating the bar-table through 90.degree. to the stowed position.

Abstract: A locking arrangement for a hopper door includes a rotatable latch which is pivotally connected to rotate between open and closed positions. The latch is actuated by a link and bell crank lever arrangement which also locks the latch closed in an over-center position. The bell crank lever is rotated by a linkage arrangement and biasing means on the bell crank lever holds the same in an over-center position.

Abstract: A railway hopper car includes side discharge openings and hinged door assemblies which are maintained in a locked position by an improved latching mechanism. The latching mechanism is pivotally connected to car structure and includes a positive lock arrangement adapted to be actuated by a linkage arrangement tripped by a cam assembly supported on the ground adjacent to the path of movement of the hopper car.