Telephone fee counter

Claim 1

IN A TELEPHONE FEE COUNTER SYSTEM FOR A SUBSCRIBER''S STATION COMPRISING A SUBSCRIBER''S TELEPHONE SET, TWO ELECTRIC TELEPHONE WIRES CONNECTED AT ONE END WITH A TELEPHONE EXCHANGE AND AT THE OTHER END TO SAID SET AND FEEDING THE LATTER, A FEE COUNTER WITH FEE PULSES GENERATED FROM THE EXCHANGE OVER SAID WIRES, IN COMBINATION WITH SAID SET AND SAID WIRES AND WITH THE FEE COUNTER, A WINDING CONTROLLING THE FEE COUNTER, A BATTERY, AN UNGROUNDED AUXILIARY CIRCUIT INCLUDING TWO TERMINAL SECTIONS CONNECTED RESPECTIVELY WITH THE CORRESPONDING TELEPHONE WIRE AND TWO MAIN SECTIONS INTERCONNECTING IN PARALLEL THE TERMINAL SECTIONS AND PASSING RESPECTIVELY THROUGH THE WINDING AND THROUGH THE BATTERY, EQUAL RESISTANCES INSERTED IN EACH TERMINAL SECTION OF THE AUXILIARY CIRCUIT, A TRANSISTOR HAVING A TIME-BASE CIRCUIT AND HAVING ITS EMITTER AND COLLECTOR INSERTED IN THE MAIN SECTION OF THE AUXILIARY CIRCUIT PASSING THROUGH THE WINDING AND NORMALLY PREVENTING THE PASSAGE OF CURRENT INTO THE LATTER, A SHUNT CIRCUIT INSERTED ACROSS THE TELEPHONE WIRES, A RECTIFYING BRIDGE INSERTED IN SAID SHUNT CIRCUIT, FILTERING MEANS INSERTED IN THE SHUNT CIRCUIT TO LIMIT THE QUANTITY OF CURRENT PASSING THROUGH SAID SHUNT CIRCUIT TO THE FEE PULSES, SAID FEE PULSES BEING TRANSMITTED OVER SAID WIRES INTO SAID SHUNT CIRCUIT, AND MEANS FEEDING THE FEE PULSES FROM THE SHUNT CIRCUIT TO THE TIME-BASE CIRCUIT OF SAID TRANSISTOR TO RELEASE THE TRANSISTOR AND TO ENSURE THUS A DISCHARGE OF THE BATTERY THROUGH THE AUXILIARY CIRCUIT INTO THE COUNTER-CONTROLLING WINDING, SAID FEE COUNTER SYSTEM, INCLUDING SAID FEE COUNTER, SAID BATTERY, SAID TRANSISTOR, SAID BRIDGE, SAID FILTERING MEANS, SAID RESISTANCE AND THE CONNECTIONS BETWEEN SAID WIRES AND SAID SET BEING ALL LOCATED AT THE SUBSCRIBER''S STATION.