Abstract: The invention is a mechanism for mounting a film shutter and assembly to a conveyor in a motion film projector, the film shutter assembly including a shutter secured to a mounting bracket, which houses a pair of trucks. Preferably, the mounting bracket securely houses a first truck and slidably houses a second truck to accommodate for the trucks passing over straight and curved portions of the truck, or shutter path. The trucks are rigidly clamped to the conveyor. This configuration permits the shutter to be stably coupled to the conveyor while permitting the shutter assembly to travel along both straight and curved paths. The trucks are generally configured to ride in a raceway, which supports the trucks and maintains the trucks on a predetermined truck path. In one embodiment, the trucks include rollers, which roll along an elongated channel formed in the raceway. According to another embodiment, the trucks include air bearings for carrying the truck along a pressurized raceway.

Abstract: A system and method are disclosed for transporting film in a motion film projector. The system includes a set of film carriages and a set of secondary shutters mounted on a conveyor, which continually advances the film carriages and the secondary shutters along a linear path oriented orthogonally with respect to an optical axis of a aperture block, through which images on the film are projected. Each film carriage receives a loop of film and then rolls the loop of film in the direction of the aperture block. A deceleration mechanism periodically engages and decelerates the film. Once the film has been decelerated, a section of the film is temporarily secured in alignment with the aperture block and an image disposed on the film is projected. The conveyor then moves a secondary shutter into alignment with the aperture block to shutter the aperture block.