Abstract: A mine car coupling assembly comprising a spring biased receiving assembly having a pair of jaw members mounted about a pivot point. The forward ends of the jaw members are beveled and tapered inwardly to form a hook configuration adapted to receive and hold an arrowhead shaped male member. Each jaw member's forward end is biased toward the other jaw member's forward end by a spring assembly mounted to both of the jaw members. The tip of the arrowhead member initially engages the jaw members of the receiving assembly and overcomes the spring assembly's force, forcing the jaw members apart. When the arrowhead has entered into the receiving assembly the hook ends are urged back toward each other by the spring assembly to engage the rear surface of the arrowhead member and hold the arrowhead member in position within the receiving assembly.