Arrangement for the automatic coaxial clamping of a sleeve over a shaft

Claim 1

CLAMPING DEVICE COMPRISING, IN COMBINATION, MEANS ADAPTED TO BE CONNECTED TO A SHAFT FOR ROTATION THEREWITH ABOUT AN AXIS AND INCLUDING AT LEAST TWO CIRCULAR PERIPHERAL SURFACES HAVING CENTERS LOCATED ECCENTRIC TO SAID AXIS, SAID CENTERS BEING SPACED FROM EACH OTHER EQUAL ANGULAR DISTANCES ABOUT SAID AXIS; A CLAMPING MEMBER TURNABLY MOUNTED ON EACH OF SAID PERIPHERAL SURFACES AND HAVING AN OUTER PERIPHERAL CLAMPING SURFACE ECCENTRIC TO THE RESPECTIVE ASSOCIATED CIRCULAR PERIPHERAL SURFACE; AND MEANS CONNECTING SAID CLAMPING MEMBERS FOR SIMULTANEOUS TURNING MOVEMENT ON SAID CIRCULAR PERIPHERAL SURFACES SO THAT THE LINES OF INTERSECTION OF SAID PERIPHERAL CLAMPING SURFACES OF SAID CLAMPING MEMBERS WITH A MEDIAN PLANE PASSING THROUGH AND PARALLEL TO SAID AXIS MOVE RADIALLY ON SAID PLANE FOR VARIOUS ROTARY ANGULAR POSITIONS OF SAID CLAMPING MEMBERS AND SO THAT THE POINTS OF SAID TWO OUTER PERIPHERAL CLAMPING SURFACES FARTHEST SPACED FROM SAID AXIS ARE UNIFORMLY SPACED ABOUT SAID AXIS IN CIRCUMFERENTIAL DIRECTION WHEREBY DURING TURNING MOVEMENT OF SAID CLAMPING MEMBERS THE RADIAL DISTANCE BETWEEN SAID POINTS VARIES BETWEEN A FARTHER SPACED POSITION FOR CLAMPING A SLEEVE SURROUNDING THE SHAFT AND A CLOSER SPACED POSITION FOR RELEASING THE SLEEVE.