High-speed intermittent feed camera

Claim 1

IN A CAMERA, THE COMBINATION COMPRISING MEANS DEFINING AN EXPOSURE AREA ACROSS WHICH FILM IS MOVED FOR SUCCESSIVE EXPOSURE, MEANS FOR PROJECTING AN IMAGE ONTO SAID EXPOSURE AREA, A SHUTTER MOUNTED TO EXPOSE SUCCESSIVE PORTIONS OF SAID FILM, MEANS FOR POSITIVELY ENGAGING A STRIP OF FILM AT LONGITUDINALLY SPACED POINTS AND CONTINUOUSLY MOVING SAID FILM TO DEFINE A LOOP BETWEEN SAID POINTS EXTENDING ACROSS SAID EXPOSURE AREA, A SPROCKET DRIVEN CONTINUOUSLY IN SYNCHRONISM WITH SAID LAST-MENTIONED MEANS ROTATABLY MOUNTED ECCENTRICALLY IN ADVANCE OF SAID EXPOSURE AREA AND HAVING TEETH THEREON ENGAGING THE PERFORATIONS IN SAID STRIP OF FILM, MEANS POSITIONED BETWEEN SAID SPROCKET AND SAID ENGAGING MEANS FOR MAINTAINING THE FILM TAUT THEREBETWEEN, A NON-CIRCULAR FILM FEED CAM ROTATABLY MOUNTED BEYOND SAID EXPOSURE AREA DRIVEN CONTINUOUSLY IN SYNCHRONISM WITH SAID SPROCKET AND HAVING A HIGH PORTION WHICH MOVES TOWARD AND AWAY FROM THE EXPOSURE AREA, SAID SPROCKET AND FEED CAM BEING DRIVEN IN SYNCHRONISM SUCH THAT DURING EXPOSURE OF THE FILM AT THE EXPOSURE AREA THE SPROCKET REVOLVES AWAY FROM THE APERTURE ABOUT ITS CENTER SUCH THAT THE FILM REMAINS STATIONARY AT THE EXPOSURE AREA AND A SLACK LENGTH IS DEFINED BETWEEN THE EXPOSURE AREA AND THE SPROCKET AND DURING MOVEMENT OF THE FILM ACROSS THE EXPOSURE AREA THE SPROCKET REVOLVES TOWARD THE EXPOSURE AREA, WHILE DURING EXPOSURE THE HIGH PORTION OF SAID FEED CAM ROTATES TOWARD THE EXPOSURE AREA PERMITTING TAKE UP OF THE FILM BY THE FILM MOVING MEANS AND THEREAFTER THE HIGH PORTION OF THE FEED CAM MOVES AWAY FROM THE EXPOSURE AREA TO PULL THE FILM ACROSS THE EXPOSURE AREA AT A CONTROLLED RATE AND TAKE UP THE SLACK LENGTH CREATED BY MOVEMENT OF THE SPROCKET AWAY FROM THE EXPOSURE AREA DURING SAID EXPOSURE.