Uncoupling central buffer couplings on rail vehicles

A device for uncoupling a central buffer coupling on a rail vehicle of the type having a rotatable disk hook with an articulated coupling eye, comprising an elongated bridgepiece fixedly connected at one end thereof to the disk hook and having spaced prongs at an opposite end thereof, a housing, an electric motor mounted to said housing, switch means for energizing and de-energizing said electric motor, cam means rotatably mounted to said housing for engaging said prongs to impart rotation to the disk hook and for engaging said switch means to energize and de-energize said electric motor, said electric motor and said cam means being interconnected so that when said motor is energized, said cam means rotates relative to said housing, said motor having a worm shaft and said cam means including a worm wheel mounted to said housing for rotation relative to said housing and a cam plate fixedly connected to said worm wheel and engageable with said switch means.