Turn control system

Claim 1

A SYSTEM FOR TURNING A CRAFT AUTOMATICALLY TO AN ORDERED HEADING IN ONE OF THREE COMPLEMENTING COMPASS RANGES INCLUDING A DIRECTIONAL REFERENCE, MEANS FOR ORDERING A CHANGE IN THE HEADING OF THE CRAFT HAVING A MANUALLY SETTABLE MEMBER, AN ALTERNATING CURRENT POWER SOURCE, A THREE PHASE TRANSMITTER ENERGIZED BY THE SOURCE HAVING A PART FIXED TO TURN WITH THE CRAFT, A PART CONNECTED DIFFERENTIALLY TO THE REFERENCE AND THE MANUALLY SETTABLE MEMBER, AND AN OUTPUT DEPENDING ON THE ANGULAR RELATION OF THE PARTS, SERVO MEANS OPERABLE TO TURN THE CRAFT WITH RESPECT TO THE REFERENCE, A FIRST COMPASS RANGE CIRCUIT BETWEEN ONE OUTPUT PHASE OF THE TRANSMITTER AND THE SERVO TURNING MEANS INCLUDING FIRST SWITCHING MEANS, MEANS FOR PROVIDING A RIGHT TURN OUTPUT, A SECOND COMPASS RANGE CIRCUIT BETWEEN THE RIGHT TURN OUTPUT MEANS AND SERVO TURNING MEANS INCLUDING SECOND SWITCHING MEANS, MEANS FOR PROVIDING A LEFT TURN OUTPUT, A THIRD COMPASS RANGE CIRCUIT BETWEEN THE LEFT TURN OUTPUT MEANS AND SERVO TURNING MEANS INCLUDING THIRD SWITCHING MEANS, AND CHANGEOVER MEANS DEPENDING ON THE SETTING OF THE HEADING CHANGE MEMBER AND THE CHANGE IN THE HEADING OF THE CRAFT FOR CLOSING THE SWITCHING MEANS OF ONE OF THE COMPASS RANGE CIRCUITS AND FOR OPENING THE SWITCHING MEANS OF THE OTHER TWO OF THE COMPASS RANGE CIRCUITS INCLUDING FIRST AND SECOND PHASE SELECTIVE CIRCUITS FOR THE OTHER TWO OF THE OUTPUT PHASES OF THE TRANSMITTER, AND A CIRCUIT BETWEEN THE RESPECTIVE PHASE SELECTIVE CIRCUITS AND THE FIRST, SECOND AND THIRD SWITCHING MEANS.

Claim 2

A SYSTEM FOR TURNING A CRAFT AUTOMATICALLY TO AN ORDERED HEADING IN ONE OF THREE COMPLEMENTING COMPASS RANGES INCLUDING A DIRECTIONAL REFERENCE, MEANS FOR ORDERING A CHANGE IN THE HEADING OF THE CRAFT HAVING A MANUALLY SETTABLE MEMBER, AN ALTERNATING CURRENT POWER SOURCE, A THREE PHASE TRANSMITTER ENERGIZED BY THE SOURCE HAVING A PART FIXED TO TURN WITH THE CRAFT, A PART CONNECTED DIFFERENTIALLY TO THE REFERENCE AND THE MANUALLY SETTABLE MEMBER, AND AN OUTPUT DEPENDING ON THE ANGULAR RELATION OF THE PARTS, SERVO MEANS OPERABLE TO TURN THE CRAFT WITH RESPECT TO THE REFERENCE, A FIRST COMPASS RANGE CIRCUIT BETWEEN ONE OUTPUT PHASE OF THE TRANSMITTER AND THE SERVO TURNING MEANS INCLUDING FIRST SWITCHING MEANS, MEANS FOR PROVIDING A RIGHT TURN OUTPUT, A SECOND COMPASS RANGE CIRCUIT BETWEEN THE RIGHT TURN OUTPUT MEANS AND SERVO TURNING MEANS INCLUDING SECOND SWITCHING MEANS, MEANS FOR PROVIDING A LEFT TURN OUTPUT, A THIRD COMPASS RANGE CIRCUIT BETWEEN THE LEFT TURN OUTPUT MEANS AND SERVO TURNING MEANS INCLUDING THIRD SWITCHING MEANS, AND CHANGEOVER MEANS DEPENDING ON THE SETTING OF THE HEADING CHANGE MEMBER AND THE CHANGE IN THE HEADING OF THE CRAFT FOR CLOSING THE SWITCHING MEANS OF ONE OF THE COMPASS RANGE CIRCUITS AND FOR OPENING THE SWITCHING MEANS OF THE OTHER TWO OF THE COMPASS RANGE CIRCUITS INCLUDING FIRST AND SECOND PHASE SELECTIVE CIRCUITS FOR THE OTHER TWO OF THE OUTPUT PHASES OF THE TRANSMITTER, AND A CIRCUIT BETWEEN THE RESPECTIVE PHASE SELECTIVE CIRCUITS AND THE FIRST, SECOND AND THIRD SWITCHING MEANS.