G - Physics – 03 – B
Patent
G - Physics
03
B
88/20, 242/30.4
G03B 21/54 (2006.01) G03B 21/32 (2006.01)
Patent
CA 1051701
ABSTRACT OF THE DISCLOSURE Film cartridge for use in viewing motion picture film having means forming a framework with an index plate with an aperture therein. A continuous length of film having perforations along one edge thereof is carried by the framework. Guide means is provided on the framework for guiding the film over the index plate and past the aperture. Means is provided for advancing the film frame by frame past the aperture. A s?ool is rotatably mounted on the framework. The spool has a central hub and a film supporting surface extending radially from the hub so that the hub extends away from the surface in a direction generally perpendicular to the surface. The spool has an annular rim spaced from the hub and extending away from the surface and in the same direction as the hub. A portion of the length of film is formed as a roll and is disposed in the spool with the hub in the center of the roll and with the rim on the outside of the roll so that the film can be payed out continuously either from the inside of the roll or the outside of the roll during movement past the aperture.
242260
Ciupke Werner W.
Runyan Steven R.
Sherlock Hugh P.
LandOfFree
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