Screw shank slotting machine with clamp carrying work turret rotatably movable past a tangentially disposed helical saw

Claim 1

IN A MACHINE FOR SLOTTING THE SHANKS OF SCREW BLANKS OF DIFFERENT SIZES, THE COMBINATION OF A RIGID TURRET DEFINING IN THE PERIPHERY THEREOF A CIRCUMFERENTIAL SERIES OF AXIAL SLOTS OPENING RADIALLY OUTWARD, ROTARY SUPPORT MEANS, MEANS DETACHABLY MOUNTING SAID TURRET ON SAID SUPPORT MEANS FOR ROTATION THEREBY, A CIRCUMFERENTIAL SERIES OF CLAMPS CARRIED BY SAID SUPPORT MEANS FOR ROTATION THEREWITH IN ALINEMENT WITH SAID SLOTS; EACH CLAMP INCLUDING AN AXIALLY MOVABLE ACTUATING ELEMENT, SPRING MEANS FOR URGING SAID ACTUATING ELMENT IN A CLAMPING DIRECTION, A CLAMPING HEAD, AND MEANS SUPPORTING SAID CLAMPING HEAD ON SAID ACTUATING ELEMENT IN COACTING RELATION TO A PAIR OF SAID SLOTS; SAID SUPPORTING MEANS FOR EACH CLAMPING HEAD INCLUDING MEANS FOR EFFECTING ADJUSTMENTS OF THE POSITION OF SAID CLAMPING HEAD RADIALLY WITH RESPECT TO THE ROTARY AXIS OF SAID ROTARY SUPPORT MEANS TO PROPERLY POSITION SAID CLAMPING HEAD FOR ENGAGEMENT WITH SCREW BLANKS OF DIFFERENT SIZES, MEANS FOR OPERATING SAID CLAMP ACTUATING ELEMENTS IN TIMED RELATION TO ROTATION OF SAID ROTARY SUPPORT COMPRISING CAM MEANS LOCATED AXIALLY BELOW SAID TURRET FOR ENGAGEMENT BY SAID AXIALLY MOVABLE ACTUATING ELEMENT, MEANS ENCLOSING SAID CAM MEANS, AND A HELICAL SAW HAVING A PLURALITY OF CONVOLUTIONS AND BEING SUPPORTED IN A SLOTTING POSITION ADJACENT AND GENERALLY TANGENT TO THE CIRCULAR PATH THROUGH WHICH SAID SLOTS ARE MOVED UPON ROTATION OF SAID ROTARY SUPPORT MEANS.