Frequency shift relaying apparatus

Claim 1

IN A RELAYING NETWORK, FIRST AND SECOND SIGNAL ACTUATED INPUT MEANS, A FIRST OUTPUT MEANS, A PLURALITY OF TIMERS, EACH SAID TIMER BEING OPERABLE TO TIME OUT A TIME INTERVAL, A FIRST CONTROL NETWORK INTERCONNECTING BOTH OF SAID INPUT MEANS AND SAID FIRST OUTPUT MEANS AND INCLUDING A FIRST AND A SECOND OF SAID TIMERS, SAID FIRST TIMER HAVING A LESSER TIME INTERVAL THAN SAID SECOND TIMER, SAID FIRST CONTROL NETWORK BEING EFFECTIVE TO PLACE SAID FIRST OUTPUT MEANS IN A FIRST CONDITION SOLELY WHEN UPON THE EXPIRATION OF SAID TIME INTERVAL OF SAID SECOND TIMER, SAID FIRST CONTROL NETWORK INCLUDING FIRST CIRCUIT MEANS INTERCONNECTING SAID FIRST TIMER TO SAID FIRST INTPUT MEANS AND TO SAID SECOND TIMER, SAID CIRCUIT MEANS BEING RESPONSIVE TO THE EXPIRATION OF SAID TIME INTERVAL OF SAID FIRST TIMER FOR PREVENTING THE TIMING OUT OF SAID TIME INTERVAL OF SAID SECOND TIMER, SAID CIRCUIT MEANS BEING RESPONSIVE TO A FIRST ENERGIZED CONDITION OF SAID FIRST INPUT MEANS TO INITIATE THE TIMING OF SAID TIME INTERVAL OF SAID FIRST TIMER, SAID NETWORK INCLUDING SECOND CIRCUIT MEANS INTERCONNECTING SAID SECOND TIMER TO SAID SECOND INPUT MEANS, SAID SECOND CIRCUIT MEANS BEING RESPONSIVE TO A FIRST ENERGIZED CONDITION OF SAID SECOND INPUT MEANS TO PREVENT THE TIMING OUT OF SAID TIME INTERVAL OF SAID SECOND TIMER, SAID FIRST CONTROL NETWORK BEING EFFECTIVE TO PLACE SAID FIRST OUTPUT MEANS IN ITS SAID FIRST CONDITION SOLELY UPON THE EXPIRATION OF A CONCURRENT TIME INTERVAL THAT BOTH OF SAID INPUT MEANS HAVE BEEN REMOVED FROM THEIR SAID FIRST CONDITIONS, SAID CONCURRENT INTERVAL BEING AT LEAST EQUAL TO SAID TIME INTERVAL OF SAID SECOND TIMER.