Tool radius correction computer

Claim 1

A MACHINE CONTROL SYSTEM FOR A ROTATABLE TOOL, SAID SYSTEM COMPRISING TWO MACHINE ELEMENTS ON MUTUALLY PERPENDICULAR X AND Y AXES, MEANS PROVIDING AN INPUT SIGNAL REPRESENTATIVE OF A VALUE PROPORTIONAL TO THE CONTINUOUSLY VARYING SLOPE ANGLE $ BETWEEN ONE OF SAID AXES AND THE TANGENT TO THE SURFACE OF A WORKPIECE TO BE MACHINED BY SAID TOOL, SAID INPUT SIGNAL BEING REPRESENTATIVE OF DATA OF A CURVED LOCUS HAVING CONTINUOUS CHANGE OF SLOPE EXCLUSIVE OF TOOL RADIUS DATA, MEANS FOR RESOLVING SAID SIGNAL REPRESENTATIVE OF THE VALUE OF $ INTO CONTROLS PROPORTIONAL TO SIN $ AND COS $, MEANS FOR CONTROLLING THE SPEED OF SAID MACHINE ELEMENTS IN ACCORDANCE WITH SAID CONTROLS, MEANS PROVIDING A SEPARATE INPUT SIGNAL REPRESENTATIVE OF A VALUE PROPORTIONAL TO THE MAGNITUDE OF A LINEAR VALUE R, MEANS FOR RESOLVING SAID SIGNALS OF VALUES OF R AND $ INTO INCREMENTS OF SAID SPEED CONTROLS RESPECTIVELY, AND MEANS FOR MODIFYING EACH OF SAID SPEED CONTROLS IN ACCORDANCE WITH ITS SAID INCREMENT.