Combination lock

Details Combination lock Combination lock

1976-04-02

1977-09-20

Parsons, Jr., Marion

Locks

Operating mechanism

Combination

E05B 3702

Patent

active

040488233

ABSTRACT:
A combination lock includes a plurality of ratchet wheels which are moved to a lock-open position by the operation of a removeably mounted finger dial, which is similar to a telephone dial. Operation of the finger dial moves a pawl which travels in a row of circular tracks, each in alignment with a ratchet wheel, with the pawl moving in succession from track to track to rotate individual ratchet wheels as successive numbers are dialed.

REFERENCES:
patent: 922065 (1909-05-01), Townsend
patent: 1863396 (1932-06-01), Davis
patent: 2125607 (1938-08-01), Fuchs
patent: 2165674 (1939-07-01), Pelle
patent: 2247220 (1941-06-01), Conlon
patent: 2289234 (1942-07-01), Bergren
patent: 2964936 (1960-12-01), Christen
patent: 3169643 (1965-07-01), Moss
patent: 3745798 (1973-07-01), Pieddeloup

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