Lathe jaw setting device

Claim 1

A DEVICE FOR USE ON THE CHUCK OF A LATHE IN COOPERATION WITH THE PERMANENT JAWS OF THE CHUCK TO FACILITATE ADJUSTMENT OF THE CHUCK FOR MACHINING SOFT JAWS TO CONFORM TO SELECTED DIAMETERS AND TO COOPERATE WITH THE PERMANENT JAWS DURING THE MACHINING OF THE SOFT JAWS, WHEREIN THE PERMANENT JAWS ARE RADIALLY ADJUSTABLE AND PROTRUDE FORWARD FROM THE FACE OF THE CHUCK BODY BY A GIVEN DIMENSION AND THE SOFT JAWS ARE MOUNTED ON THE PERMANENT JAWS, RESPECTIVELY, IN POSITIONS OVERHANGING THE FACE OF THE CHUCK BODY WITH THE SOFT JAWS FORMING WITH THE FACE OF THE CHUCK BODY CORRESPONDING CLEARANCE SPACES OF THE GIVEN DIMENSION, SAID DEVICE COMPRISING A PLATE MEMBER OF A THICKNESS LESS THAN THE GIVEN DIMENSION HAVING A CORRESPONDING PLURALITY OF EQUALLY CIRCUMFERENTIALLY SPACED PERIPHERAL CAMS OF IDENTICAL CONFIGURATION, ALL OF THE CAMS PROGRESSIVELY INCREASING IN RADIAL DIMENSION AT THE SAME RATE IN THE SAME CIRCUMFERENTIAL DIRECTION WHEREBY THE MEMBER MAY BE POSITIONED CONCENTRICALLY OF THE CHUCK WITH ITS RESPECTIVE PERIPHERAL CAMS POSITIONED IN SAID CLEARANCE SPACES, RESPECTIVELY, IN EDGEWISE ABUTMENT WITH THE PERMANENT JAWS, RESPECTIVELY, WHEREBY THE MEMBER SO POSITIONED MAY BE ROTATED TO VARY SIMULTANEOUSLY THE DEGREE TO WHICH THE CAMS LIMIT THE FREEDOM FOR RADIALLY INWARD ADJUSTMENT OF THE PERMANENT JAWS, AND WHEREBY WITH THE MEMBER AT A SELECTED ROTARY POSITION THE CHUCK MAY BE MANIPULATED FOR SIMULTANEOUS RADIALLY INWARD MOVEMENT OF THE PERMANENT JAWS INTO ABUTMENT WITH THE CAMS FOR TIGHTLY GRIPPING THE MEMBER, THE SLOPES OF SAID CAMS BEING GRADUAL TO PREVENT ROTATION OF THE MEMBER IN REACTION TO THE GRIPPING PRESSURE OF THE JAWS.

Claim 2

A DEVICE FOR USE ON THE CHUCK OF A LATHE IN COOPERATION WITH THE PERMANENT JAWS OF THE CHUCK TO FACILITATE ADJUSTMENT OF THE CHUCK FOR MACHINING SOFT JAWS TO CONFORM TO SELECTED DIAMETERS AND TO COOPERATE WITH THE PERMANENT JAWS DURING THE MACHINING OF THE SOFT JAWS, WHEREIN THE PERMANENT JAWS ARE RADIALLY ADJUSTABLE AND PROTRUDE FORWARD FROM THE FACE OF THE CHUCK BODY BY A GIVEN DIMENSION AND THE SOFT JAWS ARE MOUNTED ON THE PERMANENT JAWS, RESPECTIVELY, IN POSITIONS OVERHANGING THE FACE OF THE CHUCK BODY WITH THE SOFT JAWS FORMING WITH THE FACE OF THE CHUCK BODY CORRESPONDING CLEARANCE SPACES OF THE GIVEN DIMENSION, SAID DEVICE COMPRISING A PLATE MEMBER OF A THICKNESS LESS THAN THE GIVEN DIMENSION HAVING A CORRESPONDING PLURALITY OF EQUALLY CIRCUMFERENTIALLY SPACED PERIPHERAL CAMS OF IDENTICAL CONFIGURATION, ALL OF THE CAMS PROGRESSIVELY INCREASING IN RADIAL DIMENSION AT THE SAME RATE IN THE SAME CIRCUMFERENTIAL DIRECTION WHEREBY THE MEMBER MAY BE POSITIONED CONCENTRICALLY OF THE CHUCK WITH ITS RESPECTIVE PERIPHERAL CAMS POSITIONED IN SAID CLEARANCE SPACES, RESPECTIVELY, IN EDGEWISE ABUTMENT WITH THE PERMANENT JAWS, RESPECTIVELY, WHEREBY THE MEMBER SO POSITIONED MAY BE ROTATED TO VARY SIMULTANEOUSLY THE DEGREE TO WHICH THE CAMS LIMIT THE FREEDOM FOR RADIALLY INWARD ADJUSTMENT OF THE PERMANENT JAWS, AND WHEREBY WITH THE MEMBER AT A SELECTED ROTARY POSITION THE CHUCK MAY BE MANIPULATED FOR SIMULTANEOUS RADIALLY INWARD MOVEMENT OF THE PERMANENT JAWS INTO ABUTMENT WITH THE CAMS FOR TIGHTLY GRIPPING THE MEMBER, THE SLOPES OF SAID CAMS BEING GRADUAL TO PREVENT ROTATION OF THE MEMBER IN REACTION TO THE GRIPPING PRESSURE OF THE JAWS.