Automatic ctc system

Claim 1

A CENTRALIZED TRAFFIC CONTROL SYSTEM FOR A TRACK LAYOUT HAVING AT LEAST ONE SIDING CONNECTED AT ITS ENDS BY POWER TRACK SWITCHES TO A MAIN STRETCH OF SINGLE TRACK AND HAVING ORMALLY AT STOP SIGNALS FOR GOVERNING TRAFFIC ON THE SIDING AND ON THE MAIN TRACK IN BOTH DIRECTIONS OVER EACH OF THE TRACK SWITCHES COMPRISING: (A) A CODE COMMUNICATION SYSTEM INCLUDING A COMMUNICATION CHANNEL CONNECTING A CONTROL OFFICE AND REMOTELY SPACED FIELD STATIONS AT THE ENDS OF THE SIDING FOR THE COMMUNICATION OF SWITCH AND SIGNAL CONTROL CODES TO THE FIELD STATIONS AND FOR THE COMMUNICATION OF INDICATIONS TO THE CONTROL OFFICE, (B) A SINGLE MANUALLY OPERABLE DEVICE AT THE CONTROL OFFICE HAVING AT LEAST ONE DISTINCTIVE OPERATED POSITION FOR THE DESIGNATION OF SAID SIDING FOR THE MEETING OF TRAINS, (C) MEANS RESPONSIVE TO THE ACTUATION OF SAID DEVICE TO SAID DISTINCTIVE OPERATED POSITION FOR TRANSMITTING OVER SAID COMMUNICATION CHANNEL SELECTED SWITCH AND SIGNAL CONTROL CODES FOR THE FIELD STATIONS AT BOTH ENDS OF THE SIDING TO SET UP OPPOSING DIVERGING ROUTES THROUGH THE ENDS OF THE SIDING RESPECTIVELY FOR THE MEETING OF TRAINS, AND (D) CONTROL MEANS INCLUDING SAID CODE COMMUNICATIONS SYSTEM RESPONSIVE TO THE PASSAGE OF A TRAIN ENTIRELY INTO THE SIDING FOR ESTABLISHING A ROUTE PERMITTING PASSAGE OF AN OPPOSING TRAIN ON THE MAIN TRACK BEYOND THE PASSING SIDING.