Abstract: A hitch (10) for releasably connecting a double stack trailer to a road railer car having a tongue (14) having an opening (15) includes a top wall (16), bottom wall (24) and first and second walls (28) and (30) cooperatively connected to form a housing (12) for receiving the tongue (14) of the road railer car. The housing (12) has an upper pin receiving opening (18) in the top wall (16), and a lower pin receiving opening (26) in the bottom wall (24). The upper and lower pin receiving openings (18) and (26) are in alignment. A shaft (42) is positioned below the bottom wall (24) and cooperatively connected between the first side wall (28) and the second side wall (30). A lever (22) has an upper arm (44) cooperatively connected to a lower arm (46) with a pivot point (48) positioned between the arms (44) and (46 ). The lever (22) has a portion of the upper arm (44) extending above the top wall (16), and the lower arm (46) is positioned below the bottom wall (24).

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.