Sound-and-picture-on-film reproducing apparatus

Claim 1

A SOUND-AND-PICTURE-FILM TRANSPORT APPARATUS FOR A SOUND-AND-PICTURE REPRODUCER INCLUDING A SOUND-SCANNING DEVICE AND A FILM GATE COMPRISING: (A) A COMBINED FILM SUPPLY AND TAKE-UP REEL(B) MEANS FOR GUIDING THE FILM FORM AND TO SAID REEL; (C) A CONSTANT-SPEED DEVICE DISPOSED BEYOND THE SOUND-SCANNING DEVICE IN THE DIRECTION OF FILM MOTION FOR ENGAGING THE FILM AND WITHDRAWING IT FROM SAID SUPPLY REEL; (D) AN INTERMITTENTLY OPERATING MECHANISM FOR ADVANCING THE FILM PAST THE FILM GATE; (E) AN ELEMENT EXTENDING TRANSVERSELY OF AND BIASED CONTINUOUSLY TO ENGAGE THE FILM THROUGHOUT EACH FRAME CYCLE FOR NORMALLY FORMING A LOOP BETWEEN THE GATE AND THE SOUND-SCANNING DEVICE TO TAKE INTO ACCOUNT THE DIFFERENCE BETWEEN THE INSTANTANEOUS FILM VELOCITIES AT THE SOUND-SCANNING DEVICE AND AT THE FILM GATE; (F) AND A PATH FOR RETURNING THE FILM AFTER PASSING THE GATE DIRECTLY TO SAID TAKE-UP REEL; (G) THE ARRANGEMENT OF THE SOUND-SCANNING DEVICE, THE CONSTANT-SPEED DEVICE, AND THE FILM GATE BEING SUCH THAT THE FILM MOVES IN SUBSTANTIALLY A STRAIGHT LINE ACROSS THE APPARATUS EXCEPT FOR SAID LOOP.