Multiple template, multiple cutting tool, contour copying machine

Claim 1

IN A PATTERN-CONTROLLED MACHINE TOOL OF THE CLASS HAVING A PAIR OF NON-PARALLEL SLIDES, ONE ATOP THE OTHER, A TRACER VALVE, AT LEAST ONE OF WHICH SLIDES IS CONTROLLABLE BY THE TRACER VALVE, THE IMPROVEMENT COMPRISING A PLURALITY OF TEMPLATE HOLDERS ON THE UPPERMOST SLIDE, EACH ADAPTED TO HOLD A RESPECTIVE TEMPLATE WHOSE CONTOUR IS TO BE DUPLICATED IN A WORKPIECE, AND A PLURALITY OF TOOL HOLDERS ON SAID UPPERMOST SLIDE, ONE FOR EACH OF SAID TEMPLATE HOLDERS, EACH ADAPTED TO HOLD TOOLS TO MACHINE A WORKPIECE, THE TEMPLATES AND TOOLS THEREBY BEING PROVIDED IN SETS, THE MEMBERS OF EACH SET BEING RIGIDLY INTERCONNECTED RELATIVE TO EACH OTHER THROUGH THE UPPERMOST SLIDE, MEANS FOR MOVING THE TEMPLATES INTO INDIVIDUAL ADJACENCY WITH THE TRACER VALVE AND THEREBY TO MOVE ITS RESPECTIVE TOOL INTO ADJACENCY WITH THE WORKPIECE, WHEREUPON RELATIVE MOVEMENT BETWEEN THE TRACER VALVE AND TEMPLATE IS DUPLICATED BETWEEN THE WORKPIECE AND TOOL AND WHEREBY SUCCESSIVE SETS OF RESPECTIVE TEMPLATES AND TOOLS MAY BE MOVED INTO ADJACENCY FOR SUCCESSIVE MACHINING OPERATIONS WITHOUT REMOVAL OF THE WORKPIECE FROM THE MACHINE TOOL.