Apparatus for polishing articles

Claim 1

AN APPARATUS FOR POLISHING A WORKPIECE HAVING A BOTTOM SURFACE AND SIDE WALLS EXTENDING OUTWARDLY FROM SAID BOTTOM SURFACE, COMPRISING A FRAME, A CHUCK MOUNTED ON THE FRAME AND ADAPTED TO SUPPORT THE WORKPIECE, MEANS FOR ROTATING THE CHUCK ABOUT THE AXIS THEREOF, A TURRET PIVOTALLY CONNECTED ABOUT A VERTICAL AXIS TO THE FRAME, A PAIR OF POLISHING HEADS SUPPORTED BY THE TURRET WITH THE FIRST OF SAID HEADS HAVING AN ABRASIVE MEMBER ADAPTED TO POLISH THE SIDE WALLS OF THE WORKPIECE AND THE SECOND OF SAID HEADS HAVING A SECOND ABRASIVE MEMBER ADAPTED TO POLISH THE BOTTOM SURFACE OF THE WORKPIECE, PIVOTAL MEANS FOR PIVOTING THE TURRET WITH RESPECT TO THE FRAME TO MOVE THE HEADS TOWARD THE CHUCK INTO POLISHING POSITION AND TO MOVE THE HEADS AWAY FROM THE CHUCK TO PERMIT INSERTION AND REMOVAL OF THE WORKPIECE FROM THE CHUCK, AND DRIVE MEANS FOR MOVING SAID HEADS WITH RESPECT TO THE TURRET TO THEREBY MOVE THE FIRST ABRASIVE MEMBER ALONG THE SIDE THE SECOND ABRASIVE MEMBER ALONG THE BOTTOM SURFACE OF THE WORKPIECE TO POLISH THE SAME.