Cam operated, axially movable brake

Claim 1

IN A CROSS SLIDE ROTARY TABLE HAVING A BASE MEMBER AND A ROTARY MEMBER SUPPORTED THEREON FOR ROTATION AROUND AN UPRIGHT AXIS, MECHANISM FOR RELEASABLY HOLDING THE ROTARY MEMBER AGAINST ROTATION WITH RESPECT TO THE BASE MEMBER, COMPRISING: SUBSTANTIALLY ANNULAR FLANGE MEANS SUBSTANTIALLY CONCENTRIC WITH THE ROTATIONAL AXIS OF SAID ROTARY MEMBER AND EXTENDING UPWARDLY FROM SAID BASE MEMBER TOWARD SAID ROTARY MEMBER, SAID FLANGE MEANS HAVING A RADIAL OPENING AND AN UPPER SURFACE DEFINING A PLANE PERPENDICULAR TO SAID AXIS; SECOND FLANGE MEANS SECURED TO SAID ROTARY MEMBER; FRICTION PLATE MEANS SECURED TO AND EXTENDING RADIALLY INWARDLY FROM SAID SECOND FLANGE MEANS TO A POSITION ABOVE AND ADJACENT THE UPPER SURFACE OF SAID ANNULAR FLANGE MEANS; A CLAMPING RING SUBSTANTIALLY CONCENTRIC WITH SAID ROTATIONAL AXIS AND DISPOSED ABOVE SAID ANNULAR FLANGE MEANS FOR ENGAGEMENT WITH SAID PLATE MEANS; AN ANNULAR LEVER MEMBER ENCIRCLING SAID ANNULAR FLANGE MEANS AND PIVOTALLY SUPPORTED AT DIAMETRICALLY OPPOSITE POINTS UPON SAID CLAMPING RING FOR MOVEMENT AROUND A SECOND AXIS, SAID LEVER MEMBER BEING PIVOTALLY CONNECTED TO SAID BASE MEMBER FOR PIVOTAL MOVEMENT AROUND A THIRD AXIS AND PASSING THROUGH SAID LEVER WITH SAID SECOND AXIS AND PASSING THROUGH SAID LEVER MEMBER ON ONE SIDE OF AND SPACED FROM SAID SECOND AXIS, SAID LEVER MEMBER HAVING A LEVER ELEMENT SECURED THERETO AND PROJECTING THEREFROM ON THE OTHER SIDE OF SAID SECOND AXIS FROM SAID THIRD AXIS, SAID LEVER ELEMENT EXTENDING THROUGH SAID RADIAL OPENING; WALL MEANS ON SAID BASE MEMBER SPACED ABOVE SAID LEVER ELEMENT, SAID WALL MEANS AND SAID LEVER ELEMENT HAVING OPPOSING SURFACES CONVERGING TOWARD SAID ROTATIONAL AXIS; ACTUATING MEANS DISPOSED BETWEEN AND SIMULTANEOUSLY ENGAGEABLE WITH SAID CONVERGING SURFACES FOR MOVEMENT RADIALLY OF SAID ROTATIONAL AXIS; AND CONTROL MEANS CONNECTED TO SAID BASE MEMBER AND ENGAGEABLE WITH SAID ACTUATING MEANS FOR EFFECTING MOVEMENT THEREOF TOWARD SAID ROTATIONAL AXIS AND THEREBY CAUSING SAID LEVER MEMBER TO URGE SAID CLAMPING RING TOWARD SAID ANNULAR FLANGE MEANS, WHEREBY SAID PLATE MEANS IS TIGHTLY GRIPPED BETWEEN SAID CLAMPING RING AND SAID ANNULAR FLANGE MEANS SO THAT ROTATION OF SAID ROTARY MEMBER WITH RESPECT TO SAID BASE MEMBER IS POSITIVELY OPPOSED.