Automatic slide projector program control

Claim 1

FOR USE WITH A DUAL TRACK RECORDING AND REPRODUCING DEVICE AND AN AUTOMATIC SLIDE CHANGING PROJECTOR, A UNITARY CONTROL SIGNAL GENERATING AND REPRODUCING DEVICE COMPRISING: AN ELECTRONIC DEVICE CONNECTABLE FOR AMPLIFIER OR OSCILLATOR OPERATION; A MANUALLY SELECTIVE SWITCH HAVING A FIRST FIXED POSITION, A SECOND FIXED POSITION AND A MOMENTARY SPRINGRETURN POSITION; CIRCUIT COMPONENT MEANS CONNECTED TO SAID ELECTRON DEVICE AND TO SAID MANUALLY SELECTIVE SWITCH IN SAID FIRST FIXED POSITION THEREOF FOR AMPLIFIER OPERATION THEREOF, AND TO SAID MANUALLY SELECTIVE SWITCH IN SAID THIRD MOMENTARY SPRING-RETURN POSITION THEREOF FOR OSCILLATOR OPERATION THEREOF; SAID MANUALLY SELECTIVE SWITCH BEING "OFF" IN SAID SECOND FIXED POSITION THEREOF; AND A NORMALLY INOPERATIVE RELAY CIRCUIT CONNECTED WITH SAID CIRCUIT COMPONENT MEANS AND BEING RESPONSIVE TO OSCILLATIONS DEVELOPED IN SAID ELECTRON DEVICE TO BECOME ENERGIZED, SAID RELAY CIRCUIT BEING CONNECTED TO SAID AUTOMATIC SLIDE CHANGING PROJECTOR, SAID ELECTRON DEVICE BEING CONNECTED THROUGH SAID MANUALLY SELECTIVE SELECTIVE SWITCH IN SAID FIRST FIXED POSITION THEREOF TO THE OUTPUT OF ONE TRACK OF SAID RECORDING AND REPRODUCING DEVICE AND THROUGH SAID MANUALLY SELECTIVE SWITCH IN SAID MOMENTARY SPRING-RETURN POSITION THEREOF, TO THE INPUT OF SAID ONE TRACK OF SAID RECORDING AND REPRODUCING DEVICE, WHEREBY WHEN SAID MANUALLY SELECTIVE SWITCH IS IN SAID FIRST FIXED POSITION THEREOF, SAID ELECTRON DEVICE AMPLIFIERS RECORDED OSCILLATIONS FROM SAID RECORDING AND REPRODUCING DEVICE TO ENERGIZE SAID RELAY CIRCUIT AND OPERATE SAID PROJECTOR SLIDE CHANGING MECHANISM AND WHEN SAID MANUALLY SELECTIVE SWITCH IS MOMENTARILY PLACED IN THE MOMENTARY POSITION THEREOF SAID ELECTRON DEVICE GENERATES OSCILLATIONS WHICH ARE RECORDED BY SAID RECORDING AND REPRODUCING DEVICE WHILE AT THE SAME TIME SAID RELAY CIRCUIT IS ENERGIZED TO OPERATE SAID AUTOMATIC SLIDE PROJECTOR, SAID RECORDED SIGNALS BEING SUBSEQUENTLY REPRODUCIBLE TO RECONSTRUCT THE SLIDE SEQUENCE.