Tumbler wheel, changeable combination key lock construction

Details Tumbler wheel, changeable combination key lock construction Tumbler wheel, changeable combination key lock construction

1976-01-30

1976-11-16

Frazier, Roy D.

Locks

Operating mechanism

Combination

70322, 70355, E05B 3708

Patent

active

039915964

ABSTRACT:
A tumbler wheel type lock mechanism for use in key locks, dial operated combination locks and the like, including plural tumbler wheels in a lock casing having gated rim portions encircling hub portions which may be adjusted to different angular positions relative to their associated rim portions. A pivoted fence lever is normally releasably latched in a raised inactive position, and a releasing spring is activated by a control cam to impact against a shoulder formation on the fence lever for releasing the latter from such latched condition and impelling it to coupled relation with the control cam when the tumbler wheels occupy a predetermined alignment whereby the lock cam can be unlocked by operation of the control cam.

REFERENCES:
patent: 1484692 (1924-02-01), Weber
patent: 1956304 (1934-04-01), Abbott et al.
patent: 2494575 (1950-01-01), O'Brien
patent: 3045466 (1962-07-01), Herlong
patent: 3373583 (1968-03-01), Parrack
patent: 3514982 (1970-06-01), Bergendahl
patent: 3906761 (1974-08-01), Swaim
patent: 3968667 (1976-07-01), Gartner et al.

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