Universal 35mm film cartridge for rewind and no-rewind operation

Winding – tensioning – or guiding – Coil holder or support – Spool or core

Patent

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Details

242 712, B65M 7528

Patent

active

041733150

ABSTRACT:
A 35mm film cartridge in which the link between the core of the cartridge and the film to be contained in the cartridge is an elongated trailer made of one-sided adhesive tape doubled up around the core of the cartridge and adhesive sides together, to the free ends of which trailer is attached between its adhesive sides the end of the film for a short length of approximately 15mm, and which trailer is cross-perforated to form a break-off tip containing the attached film, and which trailer further has its adhesive sides separated by backing or non-stick liner for another similar short length adjoining the cross-perforation. The width of the trailer is slightly less than the width of the film so as to cover the double perforation of the film, and the material of the trailer can be paper or another suitable material, and the trailer extends to a length of approximately 75mm when fully pulled out. Intended to eliminate the cumbersome rewind operation of present 35mm cameras, the cartridge will serve both functions of feeding and taking up successively in cameras designed for no-rewind operation utilizing two cartridges facing each other for identical but not the same film. The cartridge also can be used in existing cameras without alteration, and is therefore universally useable.

REFERENCES:
patent: 2900868 (1959-08-01), Gaffney
patent: 3756528 (1973-09-01), Ohmura

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