Coded supervisory control system

Claim 1

A NORMALLY AT REST CODE COMMUNICATION SYSTEM FOR CODE COMMUNICATION BETWEEN TWO STATIONS COMPRISING: (A) CODE TRANSMITTING MEANS AT EACH OF THE STATIONS FOR TRANSMITTING A PLURALITY OF SELECTED BINARY TIME SPACED CODE CHARACTERS AS RESPECTIVE DIGITS OF A MULTIPLE DIGIT CYCLE OVER A COMMUNICATION CHANNEL TO THE OTHER STATION, (B) SAID CODE TRANSMITTING MEANS HAVING AT ONE STATION ODD AND EVEN CODE CHARACTER SELECTING RELAYS FOR SELECTING THE CODE CHARACTERS TRANSMITTED DURING RESPECTIVE ODD AND EVEN DIGITS, (C) MEANS FOR SELECTIVELY ENERGIZING SAID ODD CHARACTER SELECTING RELAY DURING AN ODD NUMBERED DIGIT AND FOR SELECTIVELY ENERGIZING SAID EVEN CHARACTER SELECTING RELAY DURING AN EVEN NUMBERED DIGIT, (D) STICK CIRCUIT MEANS FOR MAINTAINING SAID ODD CHARACTER SELECTING RELAY ENERGIZED DURING THE NEXT FOLLOWING EVEN DIGIT IF IT HAS BEEN PICKED UP DURING AN ODD DIGIT, (E) STICK CIRCUIT MEANS FOR MAINTAINING SAID EVEN CHARACTER SELECTING RELAY ENERGIZED DURING THE NEXT FOLLOWING ODD DIGIT IF IT HAS BEEN PICKED UP DURING AN EVEN DIGIT, (F) MEANS AT THE OTHER STATION FOR TRANSMITTING A CODE CHARACTER IN EACH DIGIT OPPOSITE IN CHARACTER TO THE CHARACTER RECEIVED AT THE STATION DURING THE PRECEDING DIGIT, AND (G) CHECKING MEANS AT SAID ONE STATION INCLUDING CONTACTS OF SAID CODE CHARACTER SELECTING RELAYS FOR DISTINCTIVELY REGISTERING WHENEVER A CODE CHARACTER IS RECEIVED FROM THE OTHER STATION THAT IS NOT OPPOSITE IN CHARACTER RELATIVE TO THE CHARACTER THAT WAS TRANSMITTED FROM SAID ONE STATION DURING THE NEXT PRECEDING DIGIT.