Auxiliary operating device for normally motor-driven closure

An auxiliary operating device for manually operating a closure which is otherwise driven by a motor, in combination with a shaft normally driven by the motor in order to displace the closure between open and closed positions, comprising a manual actuator for selectively driving the shaft for manually opening and closing the closure, and a driving member freely mounted on the shaft and axially displaceable therealong by operation of said manual actuator between a first axial position in which said driving member and the shaft are independently rotatable relative to one another, thereby allowing the shaft to be driven by the motor to displace the door between said open and closed positions thereof, and a second axial position in which said driving member is engaged with the shaft so that continuous operation of said manual actuator results in a torque being transmitted from said manual actuator to the shaft via said driving member, thereby allowing the closure to be manually displaced between the open and closed positions thereof by operation of said manual actuator.