Abstract A film magazine for still cameras of the type comprising a film feed-out chamber, a film take-up chamber and an intermediate portion extending between the two chambers and having a rectangular exposure aperture is provided at the opposite sides of the aperture thereof with guide grooves for allowing the film in the magazine to be pulled out therethrough. The guide grooves are slanted in such a direction as to facilitate the pull-out of the film. In a preferred embodiment of the invention, the slanted guide groove is provided with an engaging projection to be engaged with a perforation of the film so that the perforation of the film may fall into engagement therewith when the trailing end of the film comes to the guide groove.
Inventors
👤 Chiseki Ishii
👤 Fumio Kobayashi
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-09 19:16
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
In a film magazine for still cameras comprising a film feed-out chamber, a film take-up chamber and an intermediate portion extending between said chambers and having a rectangular exposure aperture, said intermediate portion forming therein a film passage extending between said chambers and communicated with said chambers, the improvement comprising a pair of slanted guide grooves formed one on each side of said aperture, the inner part of said guide grooves being nearer to the film take-up chamber than the outer part thereof, the width of said exposure aperture being large enough to allow the film in said film passage to be pulled out from the passage through said guide grooves.
Claim 2
Dependent Claim
111 words
In a film magazine for still cameras comprising a film feed-out chamber, a film take-up chamber and an intermediate portion extending between said chambers and having a rectangular exposure aperture, said intermediate portion forming therein a film passage extending between said chambers and communicated with said chambers, the improvement comprising a pair of slanted guide grooves formed one on each side of said aperture, the inner part of said guide grooves being nearer to the film take-up chamber than the outer part thereof, the width of said exposure aperture being large enough to allow the film in said film passage to be pulled out from the passage through said guide grooves.
Claim 3
Dependent Claim
49 words
A film magazine for still cameras as defined in claim 1 wherein at least one of said guide grooves is provided on one face thereof on the film take-up chamber side with an engaging projection to be engaged with a perforation of the trailing end portion of the film.
Claim 4
Dependent Claim
48 words
A film magazine for still cameras as defined in claim 2 wherein said exposure aperture is enlarged in its width between the guide grooves and the film take-up chamber side end thereof, the enlarged width being larger than the width of the film loaded in the film magazine.