| 摘要 |
An improved transport system for a motion picture projector which permits either intermittent or continuous drive of a film advancement sprocket. The transport is capable of use selectively with film having, for example, either two or four perforations per picture frame. During normal operation of the projector, the sprocket is intermittently driven to advance the film through a gate while a shutter interrupts the projection light. For automated film rewind through the projector, the sprocket is driven at a continuous speed which is preferably higher than the average speed in which the film is intermittently advanced through the projector.
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