Indexing rotary tool holder

Claim 1

APPARATUS FOR SEQUENTIALLY POSITIONING TOOL MEMBERS IN AN OPERATIVE POSITION ADJACENT A ROTATING WORK PIECE COMPRISING THE COMBINATION OF: A NON-ROTATABLE HOUSING POSITIONED FOR MOVEMENT RELATIVE TO SAID ROTATING WORK PIECE; A CENTRAL SHAFT FIXED AGAINST MOVEMENT IN AN AXIAL DIRECTION AND ROTATABLE WITHIN SAID HOUSING; INDEXING MEANS CARRIED ON ONE END OF SAID SHAFT FOR ROTATION THEREWITH RELATIVE TO SAID HOUSING; A ROTARY TOOL HEAD REMOVABLY MOUNTED ON THE OTHER END OF SAID SHAFT, SAID ROTARY TOOL HEAD ADAPTED TO HAVE A PLURALITY OF RADIALLY EXTENDING TOOL MEMBERS MOUNTED THEREON; LOCKING MEANS COOPERATING WITH SAID INDEXING MEANS TO PREVENT ROTATION OF SAID SHAFT; OPERATING MEANS ROTATABLE RELATIVE TO SAID SHAFT; CAM MEANS FON SAID OPERATING MEANS FOR DISENGAGING SAID LOCKING MEANS FROM SAID INDEXING MEANS WHEN SAID OPERATING MEANS IS ROTATED IN ONE DIRECTION RELATIVE TO SAID SHAFT, THEREBY FREEING SAID SHAFT FOR ROTATION IN THE SAME DIRECTION RELATIVE TO SAID HOUSING; RATCHET MEANS FOR FIXING SAID OPERATING MEANS RELATIVE TO SAID SHAFT FOLLOWING DISENGAGEMENT OF SAID LOCKING MEANS, THE CONTINUED ROTATION OF SAID OPERATING MEANS IN SAID ONE DIRECTION THUS CAUSING SAID SHAFT AND SAID INDEXING MEANS TO BE CORRESPONDINGLY ROTATED; AND, LIMIT MEANS ON SAID OPERATING MEANS COOPERATING WITH SAID LOCKING MEANS TO LIMIT ROTATION OF SAID OPERATING MEANS IN SAID ONE DIRECTION, WHEREBY UPON ROTATION OF SAID OPERATING MEANS IN THE OPPOSITE DIRECTION RELATIVE TO SAID SHAFT, SAID LOCKING MEANS WILL BE REENGAGED WITH SAID INDEXING MEANS.