Work holding, clamping and centering devices for machine tools

Claim 1

IN A MACHINE TOOL, PARTICULARLY IN A GEAR SHAPING MACHINE WHEREIN A WORKPIECE IS HELD BY CLAMPING MEANS WHILE SUBJECTED TO TREATMENT BY TOOL MEANS, IN COMBINATION, A SUPPORTING ARRANGEMENT INCLUDING A SUPPORT HAVING ELONGATED WAYS; A MOUNTING ARRANGEMENT FOR MOUNTING ONE OF SAID MEANS ON SAID SUPPORTING ARRANGEMENT; A HEADSTOCK FOR HOLDING THE OTHER OF SAID MEANS, SAID HEADSTOCK BEING RECIPROCABLE IN SAID WAYS TOWARD AND AWAY FROM SAID ONE MEANS; AND A RECIPROCATING ARRANGEMENT FOR SAID HEADSTOCK COMPRISING A MOTIVE FORCE-TRANSMITTING MEMBER OPERATIVELY CONNECTED WITH SAID HEADSTOCK AND MOVABLE IN DIRECTION ENCLOSING A PRONOUNCED ACUTE ANGLE WITH THE LONGITUDINAL DIRECTION OF SAID WAYS SO THAT, WHEN SAID HEADSTOCK IS MOVED TOWARD SAID ONE MEANS, THE MOTIVE FORCE TRANSMITTED THERETO BY SAID MEMBER INCLUDES A RECIPROCATING FORCE COMPONENT WHICH IS PARALLEL WITH THE LONGITUDINAL DIRECTION OF SAID WAYS AND A PRESSURE FGORCE COMPONENT WHICH IS NORMAL TO THE LONTIUDINAL DIRECTION OF AND IS DIRECTED AGAINST SAID WAYS WHEREBY THE HEADSTOCK IS PRESSED AGAINST AND REMAINS IN CLOSE CONTACT WITH SAID WAYS ALONG A FIXED PREDETERMINED PATH TO LOCATE SAID OTHER MEANS IN A PREDETERMINED POSITION AND AGAINST TRANSVERSAL MOVEMENT RELATIVE TO SAID ONE MEANS.