Dissolving device for multiple projectors

Claim 1

AN OPTICAL IMAGE PROJECTOR DEVICE FOR USE WITH A PAIR OF PROJECTORS WHICH COMPRISES BLIND MEANS, EACH OF SAID PROJECTORS BEING ADAPTED TO PROJECT A BEAM OF PROJECTION LIGHT AND EACH INCLUDING AUTOMATIC SLIDE CHANGING MECHANISM, A HOUSING HAVING SAID BLIND MEANS MOUNTED THEREON, A MOTOR MOUNTED ON SAID HOUSING AND COUPLED TO SAID BLIND MEANS FOR MOVING IT INTO A FIRST POSITION WHEREIN SAID BLIND MEANS INTERRUPTS THE PROJECTION LIGHT OF ONE OF SAID PROJECTORS AND FOR MOVING IT INTO A SECOND POSITION WHEREIN SAID BLIND MEANS INTERRUPTS THE PROJECTION LIGHT OF THE OTHER OF SAID PROJECTORS, CONTROL MEANS FOR SAID MOTOR INCLUDING CIRCUIT MEANS ARRANGED TO ALTERNATELY ACTUATE SAID PROJECTORS TO CHANGE A SLIDE AFTER THE BEAM OF EACH OF THEM IS BLOCKED BY SAID BLIND MEANS, SAID CONTROL MEANS INCLUDING A CAM WHEEL MOUNTED ON THE DRIVE SHAFT OF SAID MOTOR, THREE LIMIT SWITCHES MOUNTED ON SAID HOUSING, A FIRST OF SAID THREE LIMIT SWITCHES BEING SPRING BIASED TO A NORMALLY OPEN POSITION, A TWO PRONGED ELECTRICAL PLUG CONNECTED ACROSS SAID FIRST LIMIT SWITCH AND ENGAGEABLE WITH A FIRST OF SAID PAIR OF PROJECTORS FOR ACTUATING THE AUTOMATIC SLIDE CHANGING MECHANISM THEREOF, A SECOND OF SAID THREE LIMIT SWITCES BEING SPRING BIASED TO A NORMALLY OPEN POSITION, A TWO PRONGED ELECTRICAL PLUG CONNECTED ACROSS SAID SECTION LIMIT SWITCH AND ENGAGEABLE WITH A SECOND OF SAID PAIR OF PROJECTORS FOR ACTUATING THE AUTOMATIC SLIDE CHANGING MECHANISM THEREOF, A THIRD OF SAID THREE LIMIT SWITCHES BEING SPRING BIASED TO A NORMALLY CLOSED POSITION, SAID THIRD LIMIT SWITCH BEING CONNECTED IN SERIES WITH SAID MOTOR AND CONTROLLING THE OPERATION THEREOF, A PUSH BUTTON CONNECTED ACROSS SAID THIRD LIMIT SWITCH FOR SHORTING OUT SAID THIRD LIMIT SWITCH AND STARTING SAID MOTOR IN OPERATION, A PAIR OF CAMS ARRANGED AT 180* ON SAID CAM WHEEL AND POSITIONED TO ACTUATE SAID THIRD LIMIT SWITCH TWICE FOR EVERY SINGLE REVOLUTION OF THE CAM WHEEL, AND A FURTHER CAM POSITIONED TO ACTUATE EACH OF SAID FIRST AND SECOND SWITCHES ONCE FOR EVERY SINGLE REVOLUTION OF SAID CAM WHEEL AND TO ACTUATE AND RELEASE SAID FIRST SWITCH JUST PRIOR TO ONE OF SAID PAIR OF CAM ACTUATING SAID THIRD SWITCH AND TO ACTUATE AND RELEASE SAID SECOND SWITCH JUST PRIOR TO THE OTHER OF SAID PAIR OF CAMS ACTUATING SAID THIRD SWITCH.