Cinematographic apparatus

Claim 1

IN A CINEMATOGRAPHIC APPARATUS, IN COMBINATION, FILM GUIDE MEANS FOR GUIDING FILM FOR MOVEMENT ALONG A PATH WHICH EXTENDS ACROSS THE OPTICAL AXIS OF THE APPARATUS, SAID GUIDE MEANS INCLUDING A ROTARY DISCHARGE SPROCKET LOCATED ALONG THE FILM PATH SUBSEQUENT TO THE OPTICAL AXIS FOR MOVING THE FILM AWAY FROM THE OPTICAL AXIS; A PAIR OF LOOP-FORMING MEANS LOCATED ALONG THE FILM PATH RESPECTIVELY BEFORE AND AFTER THE OPTICAL AXIS FOR FORMING LOOPS IN THE FILM BEFORE AND AFTER THE OPTICAL AXIS; ELECTRICAL MOVING MEANS OPERATIVELY CONNECTED TO SAID PAIR OF LOOP-FORMING MEANS FOR MOVING THE LATTER TO AND FROM A POSITION LOCATED IN THE PATH OF MOVEMENT OF THE FILM; AND SENSING MEANS LOCATED IN THE REGION OF SAID DISCHARGE SPROCKET FOR SENSING THE PRESENCE OF FILM AT SAID DISCHARGE SPROCKET, SAID SENSING MEANS COOPERATING OPERATIVELY WITH SAID MOVING MEANS FOR ACTUATING THE SAME TO CONTROL THE POSITION OF SAID PAIR OF LOOP-FORMING MEANS, SAID SENSING MEANS INCLUDING AN ELECTRICAL SWITCH AND A FEELER OPERATIVELY CONNECTED TO SAID SWITCH FOR ACTUATING THE SAME, SAID FEELER INCLUDING A ROLLER LOCATED IN THE PATH OF MOVEMENT OF AN EDGE OF THE FILM AT SAID DISCHARGE SPROCKET TO BE ENGAGED BY SAID EDGE OF THE FILM FOR MOVING SAID FEELER AND ACTUATING SAID SWITCH, SAID ROLLER BEING LOCATED BESIDE AN OUTER PERIPHERAL PORTION OF SAID DISCHARGE SPROCKET FOR ENGAGING A FILM EDGE OF A PORTION OF THE FILM WHICH IS CURVED ON THE DISCHARGE SPROCKET SO THAT THE EDGE PORTION OF THE FILM WHICH ENGAGES SAID ROLLER IS RELATIVELY STIFF.