Intermittent action camera

Claim 1

A FILM TRANSPORT MECHANISM FOR AN INTERMITTENT ACTION STRIP FILM CAMERA COMPRISING: A FLYWHEEL; MEANS FOR DRIVING SAID FLYWHEEL AT CONSTANT SPEED; A FRICTION CLUTCHING AND BRAKING DEVICE HAVING A DRIVING ELEMENT ATTACHED TO SAID FLYWHEEL, A FIXED BRAKING ELEMENT, AND A DRIVEN ELEMENT SITUATED BETWEEN SAID DRIVING AND BRAKING ELEMENTS; A FILM DRIVE ROLLER HAVING A SMOOTH SURFACE FOR FRICTIONAL ENGAGEMENT ACROSS THE ENTIRE WIDTH OF THE FILM; AN OUTPUT SHAFT HAVING ONE END ATTACHED TO SAID DRIVEN ELEMENT AND THE OTHER END IN ROTATABLY LOCKED BUT AXIALLY FREE ENGAGEMENT WITH SAID ROLLER; SAID FLYWHEEL, SAID DRIVING, BRAKING AND DRIVEN ELEMENTS, SAID SHAFT, AND SAID ROLLER BEING CENTERED ON A COMMON AXIS; SPRING MEANS ACTING ON SAID SHAFT FOR NORMALLY BIASING SAID DRIVEN ELEMENT OUT OF CONTACT WITH SAID DRIVING ELEMENT AND INTO CONTACT WITH SAID BRAKING ELEMENT; AND APPARATUS FOR MOMENTARILY FORCING SAID DRIVEN ELEMENT INTO CONTACT WITH SAID DRIVING ELEMENT AND OUT OF CONTACT WITH SAID BRAKING ELEMENT AGAINST THE ACTION OF SAID BIASING MEANS.