Telephone carrier system

Claim 1

A MULTI-CHANNEL CARRIER WAVE SIGNALLING SYSTEM ININCLUDING A TRANSMISSION LINE IN COMBINATION: A HIGH AND LOW FILTER MEANS, CONNECTED TO THE TRANSMISSION LINE FOR OBTAINING A SAMPLE PORTION OF THE CARRIER FREQUENCY HAVING THE HIGHEST CARRIER FREQUENCY AND FROM THE CHANNEL HAVING THE LOWEST CARRIER FREQUENCY, A FIRST AND SECOND RECTIFYING MEANS CONNECTED TO THE HIGH AND LOW FILTER MEANS, RESPECTIVELY, A COMBINING MEANS FOR OBTAINING THE DIFFERENCE BETWEEN THE RECTIFIED VOLTAGES, A FIRST AMPLIFYING MEANS FOR AMPLIFYING THE DIFFERENCE VOLTAGE, A VARIABLE EQUALIZING NETWORK MEANS INSERTED IN THE COMMON PATH OF ALL THE CARRIER CHANNELS, CONNECTED TO THE FIRST AMPLIFYING MEANS SO THAT THE SLOPE COMPONENT OF THE FREQUENCY CHARACTERISTIC OF THE TRANSMITTED SIGNAL IS REGULATED, A VACUUM TUBE MEANS FOR COMBINING AND AMPLIFYING ANOTHER SAMPLE PORTION OF THE SAID HIGHEST AND LOWEST CARRIER FREQUENCY, A THIRD RECTIFYING MEANS CONNECTED TO THE VACUUM TUBE MEANS SO THAT A DIRECT CURRENT VOLTAGE PROPORTIONAL TO THE AMPLIFIED AND COMBINED OUTPUT OF THE VACUUM TUBE MEANS IS OBTAINED, A REFERENCE DIRECT VOLTAGE, A MEANS FOR OBTAINING THE VOLTAGE DIFFERENCE BETWEEN THE DIRECT CURRENT VOLTAGE AND THE REFERENCE DIRECT VOLTAGE, A SECOND AMPLIFYING MEANS THEREFOR, A VARIOLOSSER MEANS INSERTED IN THE COMMON PATH FOR ALL THE CARRIER CHANNELS, A MEANS FOR CONNECTING THE OUTPUT OF THE SECOND AMPLIFYING MEANS TO THE VARIOLOSSER MEANS SO THAT THE FLAT COMPONENT OF THE FREQUENCY CHARACTERISTIC OF THE TRANSMITTED SIGNAL IS REGUALTED.