Selector interlock for microfiche cartridge

Details Selector interlock for microfiche cartridge Selector interlock for microfiche cartridge

1975-10-02

1977-10-18

Stephan, Steven L.

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

G03B 2308

Patent

active

040543781

ABSTRACT:
A library file of microfiche film comprises a plurality of spaced parallel film stored inside a cartridge. In a microfiche reader, a reciprocally moving extractor moves into and out of the cartridge to extract and return microfiche. An elevator control means selectively raises or lowers the cartridge relatively to the extractor, thereby selecting a particular microfiche. An interlock mechanism actuated by the extractor and selectively connected to the elevator control means prevents the elevator from moving after a microfiche is extracted and before it is returned to the cartridge.

REFERENCES:
patent: 3528735 (1970-09-01), Bluitt et al.
patent: 3720464 (1973-03-01), Ditsheid
patent: 3743400 (1973-07-01), Haning et al.
patent: 3797925 (1974-03-01), Smitzer

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