Cassette for an endless type cinefilm

A cassette for an endless type film comprising:

• a rectangular casing for housing therein said film coiled to form windings, said casing comprising a bottom wall, four side walls connected to the bottom wall, and a top wall, said top and bottom walls being separated by a distance substantially equal to the sum of the width of the film plus the thickness of the film, the casing further comprising
• a film gate formed in a side wall of said casing oriented for the projection or the exposure of the portion of said film fed out of said windings and guided to pass across said film gate,
• an annular inner guide ring secured to said casing for positioning and guiding the innermost winding of said film located around said inner guide ring, the inner guide ring having an outlet cut-out portion for feeding therethrough the terminal portion of the innermost winding of said film inwardly of said inner guide ring,
• an annular outer guide ring secured to said casing and arranged around said inner guide ring substantially concentrically therewith and spaced a distance therefrom so that the windings of said film located around said inner guide ring are held within said outer guide ring, said outer guide ring having an inlet cut-out portion for receiving therethrough the foremost portion of said film which has been fed across said film gate into the interior of said outer guide ring to merge into the outermost winding of said film, said inner guide ring and said outer guide ring each having a shallow depression remote from said outlet cut-out portion of said inner guide ring for twisting that portion of the film fed out of said outlet cut-out portion by 90.degree. as the film is advanced across said inner and outer guide rings,
• a guide means for guiding said film fed out of said outlet cut-out portion of said inner guide ring across said inner and outer guide rings, said guide means being supported at a portion of said casing exteriorly of said outer guide ring adjacent to the position at which said portion of said film fed out of said inner guide ring moves across said inner and outer guide rings, the outer surface of said guide means being oriented obliquely with respect to the direction of movement of said film moving across said inner and outer guide rings, for twisting the portion of said film guided over said outer surface of said guide means by 180.degree. in the same direction as the said twisting of 90.degree., the direction of movement of said portion of said film guided over said outer surface of said guide means being turned substantially at right angles, and
• a further guide member for guiding said film from said guide means to said film gate and twisting said film by 90.degree. in the same direction as the twisting of 180.degree. effected by said guide means thereby causing said film to execute a 360.degree. twist between being fed out of said inner guide ring and being moved across said film gate, then to be advanced to said inlet cut-out portion of said outer guide ring so as to merge into the outermost winding of said film.