Relay arrangement for the reception and repetition of impulse trains

Claim 1

IN AN AUTOMATIC TELEPHONE EXCHANGE IN WHICH PULSE TRAINS ARE SENT THROUGH THE EXCHANGE BY MEANS OF A PULSE SENDER INCLUDED IN A TWO-BRANCH TELEPHONE LINE CONNECTED TO A D.C. ENERGIZING CIRCUIT, ELECTROMAGNETIC RELAY MEANS COMPRISING A PULSE RELAY MEANS HAVING A FIRST AND A SECOND COIL AND A MAKE CONTACT, SAID FIRST COIL BEING INCLUDED IN SAID ENERGIZING CIRCUIT, SAID SECOND COIL AND SAID MAKE CONTACT BEING CONNECTED IN SERIES, A PULSE REPETITION RELAY HAVING AN OPERATING COIL, THE INDUCTANCE OF THE COIL OF THE REPETITION RELAY BEING HIGH IN RELATION TO THE INDUCTANCE OF THE FIRST COIL OF THE PULSE RELAY MEANS, A LOCAL ENERGIZING CIRCUIT INCLUDING THE COIL OF THE REPETITION RELAY FOR OPERATING THE SAME, THE SECOND COIL OF THE PULSE RELAY MEANS OPPOSING THE ENERGIZATION OF THE FIRST COIL THEREOF BY SAID D.C. CIRCUIT, WHEREBY THE PULSE RELAY MEANS IS RAPIDLY RELEASED UPON INTERRUPTION OF SAID D.C. CIRCUIT OF SAID PULSE SENDER WITHOUT DELAYING OPERATION OF THE PULSE RELAY MEANS WHEN THE D.C. CIRCUIT IS CLOSED AT SAID PULSE SENDER.