Variable-visibility filing system

Details Variable-visibility filing system Variable-visibility filing system

1978-05-30

1980-11-04

Pitrelli, John F.

Card, picture, or sign exhibiting

Register, or file

Interchangeable file item

40404, 211 51, 211181, 220 225, 312187, G09F 1900

Patent

active

042311756

ABSTRACT:
Microfiche cards and the like are held in a file enclosure between file-segregator cards. The segregator cards are shaped to fit on and slide along longitudinal rails. To promote fanning of the segregator cards when they are compressed in a particular way, they have added thickness in a zone near their bottom edges. Two independently adjustable compressors are provided, one above and one below the added-thickness zone. By manipulation of the compressors a user can fan the file to a desired extent, controlling the fraction of the group of segregator cards which fans, and the angle between the adjacent fanned segregator cards, or can maintain the file tightly closed.

REFERENCES:
patent: 2198004 (1940-04-01), Elliott
patent: 2226519 (1940-12-01), Larsen
patent: 3114459 (1963-12-01), Kersting
patent: 3295697 (1967-01-01), Patterson
patent: 3301263 (1967-01-01), Spees
patent: 3347393 (1967-10-01), Frey
patent: 3739918 (1973-06-01), Kreitzburg
patent: 3848748 (1974-11-01), Ceccarelli
patent: 3913250 (1975-10-01), Spees
patent: 3929248 (1975-12-01), Morrison

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