Apparatus comprising a timing mechanism and an intermittent switching mechanism

Claim 1

DRIVE MECHANISM FOR A PICTURE-CHANGING SLIDE PROJECTOR WITH ADJUSTABLE TIME INTERVALS COMPRISING A TIMING MECHANISM HAVING A SLIDE SLOWLY DRIVEN BY GEARING AND CARRIED BY A ROTATING PART, WHILE CONTACTING WITH AN INTERRUPTED CONTACT TRACK ON A PRINTED CIRCUIT AND WITH ANOTHER CONTACT TRACK COMPRISING CONDUCTIVE CONTACT-SEGMENTS ON THE SAME PRINTED CIRCUIT, AN INTERMITTENT SWITCHING MECHANISM HAVING A RAPIDLY ROTATING DRIVING CONNECTION TO A COAXIALLY MOUNTED, ROTATING PART CARRYING A SLIDE WHICH SLIDES ON SAID INTERRUPTED CONTACT TRACK AND ON A CIRCULAR TRACK, BOTH OF WHICH ARE CONDUCTIVE, A ONE-WAY SLIP CLUTCH FOR MECHANICALLY CONNECTING THE ROTATING PARTS WITH EACH OTHER DURING ROTATION AND FOR ELECTRICALLY CONNECTING THEM WITH THE SEGMENTS AND WITH SWITCHES, A PICTURE-CHANGING MECHANISM HAVING A CRANK AND THRUST RODS, AND A MOTOR THE ROTOR OF WHICH IN ONE POSITION DRIVES THROUGH A GEAR THE ROTATING PART OF THE INTERMITTENT SWITCHING MECHANISM AND ALSO THE PICTURE-CHANGING MECHANISM AND IN ANOTHER POSITION THROUGH GEARS THE ROTATING PART OF THE TIMING MECHANISM.