Sequential keyer

Claim 1

A SEQUENTIAL KEYER FOR ALTERNATELY SWITCHING FIRST, SECOND, THIRD AND FOURTH AUDIO SIGNALS COMPRISING A RATE MULTIVIBRATOR HAVING AN OUTPUT, A SCALE-OF-FOUR COUNTER HAVING AN INPUT AND FOUR OUTPUTS, THE SIGNALS PRODUCED AT SAID OUTPUTS BEING BINARY SIGNALS A, A, B AND B, MEANS FOR COUPLING THE OUTPUT OF SAID MULTIVIBRATOR TO SAID INPUT OF SAID COUNTER, FIRST, SECOND, THIRD AND FOURTH COINCIDENT GATES, EACH OF SAID GATES HAVING FIRST AND SECOND SWITCH LINES, AN AUDIO INPUT AND AN AUDIO OUTPUT, MEANS FOR COUPLING OUTPUT SIGNALS A AND B TO SAID FIRST AND SECOND SWITCH LINES OF SAID FIRST GATE, RESPECTIVELY, MEANS FOR COUPLING SAID OUTPUT SIGNALS A AND B TO SAID FIRST AND SECOND SWITCH LINES OF SAID SECOND GATE, RESPECTIVELY MEANS FOR COUPLING SAID OUTPUT SIGNALS A AND B TO SAID FIRST AND SECOND SWITCH LINES OF SAID THIRD GATE, RESPECTIVELY, MEANS FOR COUPLING SAID OUTPUT SIGNALS A AND B TO SAID FIRST AND SECOND SWITCH LINES OF SAID FOURTH GATE, RESPECTIVELY, SAID AUDIO INPUTS OF SAID FIRST, SECOND, THIRD AND FOURTH GATES BEING ADAPTED TO RECEIVE SAID FIRST, SECOND, THIRD AND FOURTH AUDIO SIGNALS, RESPECTIVELY, SAID OUTPUT SIGNALS A, A, B AND B ALTERNATELY TURNING ON SAID GATES SO THAT SAID FIRST, SECOND, THIRD AND FOURTH AUDIO SIGNALS ALTERNATELY APPEAR AT SAID AUDIO OUTPUTS OF SAID FIRST, SECOND, THIRD AND FOURTH GATES, RESPECTIVELY.