Digital servomechanism

Claim 1

IN COMBINATION, A SERVOMECHANISM FOR POSITIONING AN OUTPUT SHAFT IN ACCORDANCE WITH TWO APPLIED POSITION ADDRESS SIGNALS CORRESPONDING TO ADJACENT DIGITS OF A SELECTED POSITION IN A PREDETERMINED NUMBER SYSTEM, SAID SERVOMECHANISM BEING PROVIDED WITH AT LEAST TWO SELECTIVELY CONNECTIBLE FOLLOWUP MEANS HAVING REBALANCING RATIOS DIFFERING BY AN ORDER OF MAGNITUDE IN SAID NUMBER SYSTEM, FIRST SWITCHING MEANS OPERABLE TO FIRST AND SECOND STATES FOR OPERATIVELY CONNECTING SAID FIRST FOLLOWUP MEANS IN SAID SERVOMECHANISM IN ITS FIRST STATE AND OPERATIVELY CONNECTING SAID SECOND FOLLOWUP MEANS IN SAID SERVOMECHANISM IN ITS SECOND STATE, A REGISTER FOR STORING A POSITION ADDRESS SIGNAL, MEANS CONTROLLED BY SAID REGISTER FOR APPLYING THE STORED POSITION ADDRESS SIGNAL TO SAID SERVOMECHANISM, A SOURCE OF POSITION ADDRESS SIGNALS CORRESPONDING TO AT LEAST THREE DIGITS OF A POSITION ADDRESS, AND SEQUENCING MEANS OPERABLE WHEN ACTUATED TO SEQUENTIALLY SHIFT PROGRESSIVELY LOWER ORDERED SIGNALS FROM SAID SOURCE TO SAID REGISTER AND SIMULTANEOUSLY APPLY THE NEXT LOWER ORDERED SIGNAL FROM SAID SOURCE TO SAID SERVOMECHANISM, AND MEANS CONTROLLED BY SAID SEQUENCING MEANS FOR ACTUATING SAID SWITCHING MEANS TO ITS FIRST STATE WHEN THE HIGHEST ORDERED SIGNAL IS SHIFTED TO SAID REGISTER AND TO ITS SECOND STATE WHEN THE SECOND ORDERED SIGNAL IS SHIFTED TO SAID REGISTER.