Abstract: A method for the transport of a movie film along a film transport path, having a friction-locking connection of at least one section of the movie film to a film transport means, which is moved continuously or intermittently over a part of the film transport path, and having a pressing device which presses the movie film against the film transport means, between which and the film transport means the movie film is routed, is provided. The movie film is transported by means of feed and take-up devices, which each contain a film transport means and a pressing device and are arranged on both sides of a picture window.

Abstract: Clamping of different format sizes of film is achieved by aperatured inserts of the required size being insertable in a base member and a platen. The base member is provided with a relatively flat surface and an aperature therein over which a film strip is positioned. The platen is provided with an aperture therethrough and a gripping strips positioned around the periphery of the aperature with the gripping strips being angled away from the aperture. A clamping of the platen to the base member, with said apertures in alignment, provides a tension in the film along all sides of the aperture as the gripping strips are urged outward from the aperture. A two degree of freedom gimbal is formed in the platen to insures that the gripping strips clamp parallel to the aperture plate. Also the design will apply an equal and even clamping force and tension around the film because the two degrees of fredom of rotations are about the center of the clamping plate inserts.

Abstract: The disclosed invention provides a means for controlling film flatness at r interfaces in the aperture where the film is used as an imaging medium between film holder plates, such as aperture plates. The film is held flat by lateral tension applied outward in all directions from the center portion of the area of the film being viewed by rubberized type O-rings in grooves on each of the aperture plates being clamped against the film by various clamping direct transverse pressure means. The lateral tension is caused by the stretch of the O-ring outward from the center of the aperture by the shape of grooves in the plates constraining any inward movement but providing bias movement of the O-rings outward.

Abstract: Photographic film handling equipment is disclosed, wherein photographic film is positioned relative to a photographic lens system. The film is advanced in a first direction by a film transport mounted on a carriage which is restricted by bars to movement in opposed parallel second and third directions. The carriage is driven via an endless timing belt disposed in a loop having a straight portion extending parallel to the latter second and third directions. Motive power is transmitted from the timing belt to the carriage by a bracket connected to the straight loop portion of the timing belt. A motor drives the timing belt in opposite senses.