Rotary file locking mechanism

Details Rotary file locking mechanism Rotary file locking mechanism

1985-10-02

1986-09-09

Lyddane, William E.

Supports: cabinet structure

With movable components

Continuously housed

312202, 312252, 312286, 248418, A47B 4900

Patent

active

046104925

ABSTRACT:
A rotary file having an outer fixed cabinet and an inner cabinet rotatable on a vertical axis includes a locking mechanism comprised of a pair of simultaneously movable stops that can interfere with rotation of the inner cabinet in either direction. The stops are spaced from each other and are hinge-mounted to a fixed base of the outer cabinet so that they can be raised up to an interfering position with any one of the four sides of a square base member of the inner rotatable cabinet. One stop precludes rotation of the inner cabinet in a clockwise direction, while the other stop precludes rotation of the inner cabinet in a counterclockwise direction. An elongated bell crank member, rotatable on a horizontal axis by means of a user-activated locking handle, is connected to the hinge-mounted stops by a pair of vertically extending parallel links, movement of the bell crank member causing concurrent movement of the stops between their interfering and non-interfering positions.

REFERENCES:
patent: 2510924 (1950-06-01), Bruen
patent: 3834660 (1974-09-01), Leffler
patent: 3868157 (1975-02-01), Robinson
patent: 4229060 (1980-10-01), Brownlee et al.
patent: 4392628 (1983-07-01), Hadfield et al.

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