Numerical control system for a machine tool

Claim 1

IN A SYSTEM FOR EFFECTING MOVEMENT ALONG A PATH WHICH IS THE RESULTANT OF THE VELOCITIES OF MOVEMENT ALONG FIRST AND SECOND COORDINATE AXES AND INCLUDES FIRST AND SECOND PULSE RESPONSIVE MEANS FOR EFFECTING MOVEMENT ALONG SAID FIRST AND SECOND COORDINATE AXES RESPECTIVELY AT RATES DEPENDENT UPON THE FREQUENCIES OF THE APPLIED PULSES, THE COMBINATION OF MEANS PROVIDING A PULSE TRAIN OF A PREDETERMINED FREQUENCY, MEANS PROVIDING A SECOND PULSE TRAIN HAVING A FREQUENCY RELATED TO SAID PREDETERMINED FREQUENCY BY THE RATIO OF THE MAGNITUDE OF SAID VELOCITIES WHEREBY SAID FREQUENCIES OF SAID VELOCITIES HAVING THE SAME RATIO AS THE MAGNITUDE OF SAID VELOCITIES DEFINING EACH RESULTANT, SWITCHING MEANS FOR SELECTIVELY APPLYING EITHER OF SAID PULSE TRAINS TO EITHER OF THE SAID PULSE RESPONSIVE MEANS AND THE OTHER OF SAID PULSE TRAINS TO THE OTHER OF SAID PULSE RESPONSIVE MEANS, AN INTELLIGENCE CARRYING RECORD HAVING SUCCESSIVE INTELLIGENCES THEREON AS TO WHICH OF SAID VELOCITIES FOR EACH RESULTANT HAS THE LARGER MAGNITUDE, AND SWITCH CONTROL MEANS FOR SAID SWITCHING MEANS AND RESPONSIVE TO SAID RECORD TO SWITCH SAID FIRST PULSE TRAIN TO SAID FIRST PULSE RESPONSIVE MEANS WHEN ONE OF SAID VELOCITIES IS LARGER AND TO THE SECOND PULSE RESPONSIVE MEANS WHEN IT IS SMALLER THAN THE OTHER VELOCITY AND TO SIMULTANEOUSLY SWITCH THE SECOND PULSE TRAIN TO THE OTHER OF SAID FIRST AND SECOND PULSE RESPONSIVE MEANS.