Intermittent train control system

Claim 1

IN A TRAIN CONTROL SYSTEM WHEREIN A NORMALLY ENERGIZED ELECTRO-RESPONSIVE VALVE CIRCUIT MEANS ON A VEHICLE IS DEENERGIZED TO APPLY THE BRAKES OF THE VEHICLE BY ELECTRO-MAGNETIC MEANS OPERATED IN RESPONSE TO THE INFLUENCE OF A DEVICE THAT IS ADAPTED TO BE POSITIONED ALONG THE WAYSIDE, AND WHEREIN ACKNOWLEDGING MEANS WHEN MANUALLY OPERATED DURING OPERATION OF THE ELECTRO-MAGNETIC MEANS MAINTAINS THE ELECTRO-RESPONSIVE VALVE CIRCUIT MEANS ENERGIZED, THE COMBINATION OF A RECEIVING MEANS ON THE VEHICLE RESPONSIVE TO A SIGNAL RECEIVED FROM A WAYSIDE TRANSMITTING MEANS THAT IS DISPOSED ALONG THE WAYSIDE AHEAD OF THE WAYSIDE DEVICE AS THE VEHICLE PASSES THE TRANSMITTING MEANS, A NORMALLY INACTIVE DISTANCE DETECTING MEANS ON THE VEHICLE OPERATIVE WHEN ACTIVE TO DEENERGIZE THE VALVE CIRCUIT MEANS WHEN THE VEHICLE TRAVELS A PREDETERMINED DISTANCE AFTER BEING ACTIVATED, A FIRST MEANS NORMALLY IN ONE CONDITION AND OPERTED TO ITS OTHER CONDITION IN RESPONSE TO THE OPERATION OF EITHER ONE OF THE ACKNOWLEDGING MEANS AND THE ELECTRO-MAGNETIC MEANS TO ACTIVATE THE DISTANCE DETECTING MEANS, A SECOND MEANS NORMALLY IN ONE CONDITION AND OPERATED TO ITS OTHER CONDITION IN RESPONSE TO THE DETECTED OPERATION OF BOTH ONE ACKNOWLEDGING MEANS AND THE ELECTRO-MAGNETIC MEANS, A THIRD MEANS RESPONSIVE TO THE SIGNAL RECEIVED BY THE RECEIVING MEANS WHEN THE SECOND MEANS IS IN ITS OTHER CONDITION TO OPERATE THE FIRST MEANS TO ITS ONE CONDITION TO DEACTIVATE THE DISTANCE DETECTING MEANS BEFORE THE VEHICLE HAS TRAVERSED ALL OF SAID PREDETERMINED DISTANCE OF TRAVEL, AND A FOURTH MEANS RESPONSIVE TO THE RECEPTION OF A SIGNAL FROM THE RECEIVING MEANS WHEN THE FIRST MEANS IS IN ITS ONE CONDITION TO DENERGIZE THE VALVE CIRCUIT MEANS.