Reversible film cartridge and camera
First Claim
1. A film cartridge comprising:
- first and second light tight film casings;
a film supply spool within said first casing;
a film take up spool within said second casing,said take up and supply spools and casings being symmetrical and interchangeable, each said casing having opposite sides with central openings in each said side, each said spool having a hollow cylindrical shaft with annular extensions on each end extending through and out of each said casing opening;
support means extending between and around said annular extensions for holding said casings in a spaced relationship for insertion into a camera, said support means extending along open areas in upper and lower regions between said casings, said upper open area being adapted to receive the pressure plate of a camera cover, and said lower open area being adapted to fit over the camera film aperture guide;
a film roll extending between said casings and being connected at opposite ends to each spool; and
driving means extending within said ends of each spool.
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Accused Products
Abstract
A film cartridge includes two like film spools in a pair of symmetrical casings held in a spaced relationship by support means such as a side support bar or a hinged reusable cartridge case. An opening in the back of the cartridge between the two casings permits the pressure plate inside the back cover of the camera to hold the film tightly against the film aperture guide. The ends of the film are attached to both spools and the cartridge is reversible to permit exposures along two separate rows across the width of the film. Cooperating aperture and viewing masks limit the exposures to each row in succession as the film is advanced and then reversed. Larger rectangular or square frames across the width of the film may also be used without reversal of the film. The side openings in the cartridge case and extensions on both ends of the spools are symmetrical so that either side can engage the film driving mechanism. The usual sprocket gear, built in spool, and need for rewinding of a standard 35mm camera are eliminated, as well as the film sprocket holes, to permit utilization of larger areas of the film and simplification of the camera construction.
41 Citations
9 Claims
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1. A film cartridge comprising:
- first and second light tight film casings;
a film supply spool within said first casing; a film take up spool within said second casing, said take up and supply spools and casings being symmetrical and interchangeable, each said casing having opposite sides with central openings in each said side, each said spool having a hollow cylindrical shaft with annular extensions on each end extending through and out of each said casing opening; support means extending between and around said annular extensions for holding said casings in a spaced relationship for insertion into a camera, said support means extending along open areas in upper and lower regions between said casings, said upper open area being adapted to receive the pressure plate of a camera cover, and said lower open area being adapted to fit over the camera film aperture guide; a film roll extending between said casings and being connected at opposite ends to each spool; and
driving means extending within said ends of each spool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- first and second light tight film casings;
Specification