Automatic clutch with speed responsive pilot clutch

Claim 1

A CLUTCH ARRANGEMENT, COMPRISING A SHAFT HAVING AN AXIS, A FIRST CLUTCH MEMBER FREELY ROTATABLE ABOUT SAID SHAFT, A SECOND CLUTCH MEMBER AXIALLY SLIDABLE ON SAID SHAFT AND SECURED AGAINST ROTATION RELATIVE TO SAID SHAFT, A PRESSURE MEMBER FREELY ROTATABLE ABOUT SAID SHAFT AND AXIALLY MOVABLE THEREON TOWARD AND AWAY FROM A POSITION IN WHICH SAID PRESSURE MEMBER URGES SAID SECOND CLUTCH MEMBER INTO A MOTION-RECEIVING ENGAGEMENT WITH SAID FIRST CLUTCH MEMBER, COMPLEMENTARY CONNECTING MEANS IMMEDIATELY ON SAID FIRST CLUTCH MEMBER AND SAID PRESSURE MEMBER FOR SELECTIVELY PERMITTING SAID PRESSURE MEMBER TO IDLY ROTATE TOGETHER WITH SAID FIRST CLUTCH MEMBER, AND MAKING SAID PRESSURE MEMBER MOVE IN AN AXIAL SCREWLIKE MOTION TOWARD SAID SECOND CLUTCH MEMBER AND FORCE THE LATTER INTO SAID MOTION-RECEIVING ENGAGEMENT, AND CENTRIFUGAL COUPLING MEANS MOUNTED ON SAID PRESSURE MEMBER TO BE RESPONSIVE TO THE ROTARY SPEED OF SAID FIRST CLUTCH MEMBER FOR SELECTIVELY EFFECTING SAID IDLE ROTATION OF SAID PRESSURE MEMBER, WHILE SAID CLUTCH MEMBERS ARE DISENGAGED, AND CONNECTING SAID PRESSURE MEMBER TO SAID SHAFT, WHILE MAKING SAID PRESSURE MEMBER CARRY OUT SAID AXIAL SCREWLIKE MOVEMENT FOR JOINT ROTATION OF SAID CLUTCH MEMBERS, PRESSURE MEMBER, AND SHAFT.