Abstract: A railway car coupler includes a shank, a head connected to a head end portion of the shank, a knuckle pivoted to the head having closed and open positions, and a lock axially movable within a chamber formed in the shank between a knuckle engaged position for maintaining the knuckle in the closed position and a knuckle disengaged position for enabling the knuckle to be pivoted to the open position. A thrower is pivotally connected to the lock and has an arm disposed to one side of the pivot for engaging the knuckle to rotate the knuckle to its open position. An actuating mechanism is connected to the thrower-lock assembly and is axially movable within the chamber. The actuating mechanism functions to axially move the lock towards its knuckle disengaged position, with continued movement of the actuating mechanism in the same direction pivoting the thrower and consequentially the knuckle to its open position after the lock has obtained its knuckle disengaged position.

Abstract: A coupling device for railway motor cars includes a pole or tongue on the motor car with a cam member pivoted on the distal end thereof. A coupling box with converging side walls is secured to the end of the trailing car and has a coupling pin extending from top to bottom. When the pivoted cam enters the box it is cammed by first, a sidewall, and then the back wall to pivot and hook around the coupling pin. During the course of this movement, a spring-biased locking pin rides on the flat, top surface of the cam to drop behind it when the coupling is complete, thus preventing reverse pivotal movement. A chain, is secured from the locking pin to an arm extending radially from a long shaft extending laterally to the side of motor car and terminating in an operating arm which, when raised, lifts the locking pin to release the pivoted cam for uncoupling.