Drive mechanism for a plurality of rotatable objects

Claim 1

APPARATUS FOR CONTOURING GENERALLY TUBULAR WORKPIECES HAVING GENERALLY AXIALLY EXTENDING INTERNAL OPENINGS AND OUTER SURFACES OF REVOLUTION TO BE CONTOURED, SAID APPARATUS COMPRISING: A TURRET ROTATABLE ABOUT A FIXED AXIS AND HAVING A PLURALITY OF GENERALLY AXIALLY EXTENDING SPINDLES SPACED AT A UNIFORM RADIAL DISTANCE FROM SAID FIXED AXIS, SAID SPINDLES BEING CONSTRUCTED AND ARRANGED FOR RECEIVING SAID OPENINGS OF SAID WORKPIECES, SAID TURRET MOVING SAID SPINDLES AND WORKPIECES THEREON ALONG A PREDETERMINED ARCUATE PATH, A PAIR OF SPACEDAPART PULLEYS POSITIONED RADIALLY OUTWARDLY OF SAID ARCUATE PATH, AN ENDLESS BELT OF GENERALLY T-SHAPED CROSS SECTION EXTENDING OVER SAID PULLEYS WITH ONE PORTION OF THE BELT PARALLELING SAID ARCUATED PATH, SAID BELT HAVING A BASE LEG ENGAGED BY SAID PULLEYS AND A PROJECTING CENTER LEG POSITIONED TO ENGAGE WORKPIECES ON SAID SPINDLES, SAID CENTER LEG HAVING SPACED-APART SLOTS WITH SIDEWALLS PROJECTING GENERALLY NORMAL TO SAID BASE LEG, SAID SIDEWALLS BEING SPACED TO ABUT EACH OTHER WHEN SAID CENTER LEG PARALLELS SAID ARCUATE PATH AND ENGAGES WORKPIECES ON SAID SPINDLES, AND MEANS POSITIONED RADIALLY INWARDLY OF SAID ARCUATE PATH FOR CONTOURING WORKPIECES ON SAID SPINDLES, WHEREBY WORKPIECES ON SAID SPINDLES ARE SMOOTHLY AND UNIFORMLY ROTATED BY SAID BELT.