Abstract: A railway car wheel profilometer accurately transcribes the profile of the wheel treads onto a removable card for permanent record and later analysis. The device also measures the diameter of the wheel.

Abstract: A locking and actuating mechanism for a pair of horizontally movable hopper doors includes an arm and actuating linkage which engages a track side cam for moving the doors between open and closed positions. One of the doors includes a keeper which is engageable by a latch mechanism in the other door. The latch mechanism includes a linkage arrangement which is connected to the actuating link and arm by means of a lost motion connection.

Abstract: A door lifter mechanism for a railway car door is operable by a handle which acts on two fulcrum bars. A fulcrum bar lifter roller is carried by the handle and supports the ends of the fulcrum bars, which are joined by a pivot spool received in slots in the fulcrum bars.

Abstract: A door and discharge hopper combination including a locking mechanism which includes a rotatable latch jaw adapted to engage a keeper on the hopper door. The jaw is maintained in a locked position by means of a link and bell crank lever arrangement which is adapted to be biased into an over-center position to assure positive locking of the latch jaw and keeper arrangement.

Abstract: A striker assembly for end-of-car hydraulic cushioning devices includes a housing which is connected to the shank of the coupler. The coupler shank is provided with an elongated slot which is connected to a transversely extending key carried in key supporting slots provided in vertical side walls of the housing. The key has a pair of transversely spaced notches which are engaged by vertical retaining pins supported within the housing. One of the retaining pins is movable outwardly from the housing which thereupon permits the key to be removed through one of the key supporting slots whereby the coupler is readily removable.

Abstract: A railway hopper car is provided with bottom discharge doors which include an opening and closing mechanism for each of the doors. The mechanism comprises a bell crank lever and linkage arrangement which in the closed position assumes an over-center lock position. The doors are initially actuated to an open position for affecting gravity discharge by means of a track side cam. A second closing cam structure is provided, which, as the car passes therethrough on opposite sides of the track, the bell crank lever and linkage mechanism is again moved to its closed over-center position locking the doors. The closing cam includes a spring actuated portion built into the cam face which is adapted to assist in the operation of the bell crank lever again moving to its over-center position.