Mechanical assembly for alternately producing displacement of a carriage and rotation of a carriage mounted gear

A mechanical assembly for alternately producing displacement of a carriage with respect to a carriage track and rotation of a gear mounted on the carriage, in response to torque provided from a single drive motor including: a latching assembly, having a latched state and an unlatched state, operably associated with the carriage for preventing relative movement between the carriage and the track during the latched state; and a locking assembly, having a locked state and an unlocked state, operatively associated with the gear for preventing relative rotation of the gear during the locked state.