Film cartridge and cartridge mounting insert for microfilm machines
OwnerDonald H. Klosterboerinventor
Life of this patent
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Abstract
The cartridge is a generally cylindrical enclosure with a light seal through which a film web is drawn. The cartridge is closed with two side plates, one of which is removable. A spindle is journaled in the side plate. Film wound on a core is mounted on the spindle. The assembly is placed in an adapter insert. The adapter incorporates a motion multiplication mechanism such as gearing to drive a detectable element to rotate multiple times for each rotation of the core. The detectable element is positioned opposite a magnetic/proximity detector or optical detector on the host machine.
Claims9
A film cartridge and a cartridge adapter insert for being received in the film nest of a microfilm machine, where the machine incorporates at least one detector, comprising:
- a cartridge adapter insert comprising a frame and at least one detectable element mounted on said frame for movement in and out of the effective sensing range of a detector;
- a film cartridge supported on said cartridge adapter insert and comprising a light-tight enclosure, a spindle extending through said enclosure, said spindle being rotatably mounted on said enclosure, said spindle being adapted to receive a film core within said enclosure;
- a drive disc mounted on said spindle external to said enclosure for rotation with said spindle;
- a motion multiplication mechanism engaging said drive disc and connected to said detectable element,
- said motion multiplication mechanism having means for moving said detectable element in and out of the effective sensing range of said detector an integral number of times, greater than one, for each rotation of said spindle.
Dependencies are inferred from the claim text.