Hoist employing clutch-brake

Claim 1

A HOIST HAVING A HOUSING, A LOAD SHAFT MOUNTED FOR ROTATION IN SAID HOUSING, LOAD ENGAGING MEANS POSITIVELY CONNECTED TO SAID LOAD SHAFT AND MOVABLE BY ROTATION OF SAID LOAD SHAFT TO LIFT AND LOWER A LOAD, A RATCHET SURROUNDING SAID LOAD SHAFT, A PAWL CARRIED BY SAID HOUSING AND ENGAGING SAID RATCHET TO PREVENT ROTATION OF SAID RATCHET IN ONE DIRECTION, A BRAKE HUB SURROUNDING ONE END OF SAID LOAD SHAFT, FRICTION MEANS, INTERENGAGING THREADS ON SAID BRAKE HUB AND LOAD SHAFT WHEREBY RELATIVE ROTATION BETWEEN SAID BRAKE HUB AND LOAD SHAFT IN ONE DIRECTION CAUSES ENDWISE MOVEMENT OF SAID BRAKE HUB RELATIVELY TO SAID LOAD SHAFT TO BIND SAID RATCHET TO SAID LOAD SHAFT THROUGH SAID FRICTION MEANS SO THAT SAID LOAD SHAFT IS PREVENTED FROM ROTATING IN SAID ONE DIRECTION BY SAID RATCHET AND PAWL, A SECOND RATCHET ON SAID BRAKE HUB, AN ELONGATED HANDLE, REVERSIBLE PAWL MEANS ON SAID HANDLE FOR CONNECTING SAID HANDLE TO SAID BRAKE HUB WHEREBY SAID BRAKE HUB MAY BE ROTATED IN EITHER DIRECTION BY SAID HANDLE, AND SPRING MEANS INTERCONNECTING SAID BRAKE HUB AND SAID LOAD SHAFT AND CAUSING ROTATION OF SAID BRAKE HUB RELATIVELY TO SAID LOAD SHAFT IN A DIRECTION TO BIND SAID RATCHET TO SAID LOAD SHAFT WHENEVER SAID BRAKE HUB IS NOT POSITIVELY ROTATED IN THE OPPOSITE DIRECTION BY SAID HANDLE.