Multiple station selection system

Claim 1

A STATION SELECTION SYSTEM COMPRISING: A PLURALITY OF DIVERSELY LOCATED CONTROL STATIONS; A CONTROLLED STATION ACCESSIBLE TO ANY OF SAID CONTROL STATION; A SOURCE OF POTENTIAL; INTERLOCK MEANS AT EACH OF SAID CONTROL STATIONS; SELECTION MEANS AT EACH OF SAID CONTROL STATIONS FOR CONNECTING EACH INDIVIDUAL CONTROL STATION TO SAID CONTROLLED STATION AND FOR CONTROLLING THE INTERLOCK MEANS AT EACH STATION; A FIRST CIRCUIT CONNECTED TO SAID SOURCE OF POTENTIAL AND ROUTED IN SEQUENCE THROUGH EACH OF THE INTERLOCK MEANS AT SAID CONTROL STATIONS IN A SERIAL PATH FROM ONE CONTROL STATION TO ANOTHER AND ACCORDING TO A PREDETERMINED ORDER OF PRIORITY; AN INITIAL ENERGIZING SECOND CIRCUIT CONNECTED TO THE TERMINATION OF SAID INTERLOCKING FIRST CIRCUIT AND ROUTED IN PARALLEL TO ALL OF SAID CONTROL STATIONS FOR SUPPLYING AN INITIAL ENERGIZING POTENTIAL TO THE SELECTION MEANS AT SAID CONTROL STATIONS, SAID SECOND CIRCUIT BEING NORMALLY OPEN AT EACH OF SAID CONTROL STATIONS; AN INDIVIDUAL HOLDING THIRD CIRCUIT AT EACH CONTROL STATION, EACH SAID HOLDING CIRCUIT BEING CONNECTED IN PARALLEL TO SAID FIRST CIRCUIT JUST PRIOR TO THE INTERLOCK MEANS AT THE RESPECTIVE CONTROL STATION FOR SUPPLYING POTENTIAL TO HOLD THE SELECTION MEANS ENERGIZED AT EACH SAID CONTROL STATION, EACH SAID HOLDING CIRCUIT BEING NORMALLY OPEN; MEANS AT EACH CONTROL STATION FOR CLOSING SAID ENERGIZING SECOND CIRCUIT CONNECTION TO THEREBY ENERGIZE THE SELECTION MEANS AT EACH SAID CONTROL STATION; AND MEANS UNDER CONTROL OF AN ENERGIZED SELECTION MEANS FOR CLOSING THE PARALLEL HOLD CIRCUIT AT THE ASSOCIATED CONTROL STATION TO MAINTAIN SAID SELECTION MEANS AT SAID ASSOCIATED CONTROL STATION ENERGIZED AND TO THEREAFTER OPERATE THE INTERLOCK MEANS IN SAID SERIAL INTERLOCKING PATH TO THEREBY RENDER INEFFECTIVE THE ENERGIZING SECOND CIRCUIT CONNECTIONS TO ALL STATIONS AND TO FURTHER RENDER INEFFECTIVE THE HOLDING CIRCUITS OF ALL OTHER CONTROL STATIONS HAVING A LOWER ORDER OF PRIORITY.