Machine for automatically pitch buttoning lens blanks

Claim 1

IN A MACHINE FOR PITCH BUTTONING OPTICAL LENS BLANKS, THE COMBINATION OF AN INDEX TABLE HAVING SUCCESSIVE STATIONS AT WHICH ARE A MOLD COMPLEMENT AND A CIRCUIT CONTROL MEMBER, SAID MOLD COMPLEMENT INCLUDING A LENS BLANK AND SUPPORT MEANS THEREFOR, SAID SUPPORT MEANS INCLUDING A SOLID CYLINDER UNDERLYING SAID LENS BLANK, A GUIDE SLEEVE SURROUNDING SAID LENS BLANK AND AT LEAST A PORTION OF SAID SUPPORT MEANS, SAID SUPPORT MEANS AND SAID GUIDE SLEEVE EACH HAVING AN OUTWARDLY EXTENDING FLANGE, AND A COMPRESSION SPRING POSITIONED BETWEEN SAID FLANGES, A SUPPORT MOVABLE IN A DIRECTION PARALLEL WITH THE AXIS OF SAID TABLE, AN ASSEMBLY FIXED TO SAID SUPPORT AND EXTENDING OVER SAID TABLE, SAID ASSEMBLY INCLUDING A PITCH POT CONTAINING PITCH COMPOUND AND A TRUNCATED CONE MOLD COMMUNICATIVELY CONNECTED THEREWITH, A COIL FOR HEATING SAID MOLD, A HEATING COIL TIMER SWITCH, MEANS FOR RAISING AND LOWERING SAID SUPPORT, AND A LIMIT SWITCH OPERATED BY SAID CONTROL MEMBER TO CLOSE SAID HEATING COIL TIMER SWITCH AND TO COMPLETE A FIRST CONNECTION OF SAID SUPPORT MOVING MEANS, SAID HEATING COIL TIMER SWITCH CONTROLLING SAID SUPPORT AND LOWERING MEANS, SAID GUIDE SLEEVE IN ITS NORMAL POSITION EXTENDING ABOVE THE UPPERMOST COMMON CONTACT SURFACE BETWEEN IT AND SAID BLANK, SO THAT WHEN SAID ASSEMBLY IS MOVED DOWNWARDLY AGAINST SAID BLANK AND ITS SUPPORT MEANS, THE GUIDE SLEEVE WILL RETRACT TO A SUBSEQUENTLY FORMED UPPERMOST COMMON CONTACT SURFACE AND ENABLE THE PITCH COMPOUND TO FLOW PRECISELY TO THE EXTREME EDGE OF THE LENS BLANK UPPER SURFACE.