| 摘要 |
FILM ADVANCE DEVICE FOR SURVEILLANCE CAMERAS A sequence camera for recording a series of images on a strip of photographic film employing a rotating shutter and an intermittent film advance mechanism. A motor drives the shutter and the film advance mechanism. The film advance mechanism utilizes a beater wheel with two protruding pins spaced unequally about the circumference and a spoke wheel with a plurality of spokes. As the motor drives the beater wheel, the pins intermittently engage the spokes of the spoke wheel, which, in turn, intermittently advances the film. The film is exposed by the shutter during the stationary period between advancements. |
