1. A CLUTCH AND ROTATION ARRESTING MECHANISM FOR A ROTARY DRIVING MEANS AND A ROTARY DRIVEN MEANS COMPRISING: (A) HOUSING MEANS; (B) A DRIVEN CLUTCH ELEMENT WITHIN SAID HOUSING MEANS CONNECTED TO SAID DRIVEN MEANS FOR CONJOINED ROTATION THEREWITH; (C) A DRIVING CLUTCH ELEMENT WITHIN SAID HOUSING MEANS ROTATABLE BY SAID DRIVING MEANS AND AXIALLY MOVABLE INTO AND OUT OF ROTATIVE ENGAGEMENT WITH SAID DRIVEN CLUTCH ELEMENT; (D) RESILIENT MEANS WITHIN SAID HOUSING MEANS INTERMEDIATE SAID DRIVING CLUTCH ELEMENT AND SAID DRIVEN CLUTCH ELEMENT URGING SAID DRIVING CLUTCH ELEMENT AXIALLY OUT OF SADI ROTATIVE ENGAGEMENT WITH SAID DRIVEN CLUTCH ELEMENT; (E) INERTIAL MEANS OPERATIVELY CONNECTED TO SAID DRIVING CLUTCH ELEMENT FOR MOVING SUCH AXIALLY INTO SAID ROTATIVE ENGAGEMENT WITH SAID DRIVEN CLUTCH ELEMENT UPON A PREDETERMINED ANGULAR SPEED OF ROTATION OF SAID DRIVING CLUTCH ELEMENT;