Safety lock

Details Safety lock Safety lock

1976-06-18

1978-01-10

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, E05B 1514

Patent

active

040672140

ABSTRACT:
A safety lock of cylinder type to be operated with a key provided with a groove, the lock comprising a drum, a ,906,437 09001975lock lever and a plurality of tumbler discs. Upon inserting the key, peripheral recesses in the tumbler discs become aligned to receive the lock bar thereby enabling the drum to be rotated. The tumbler discs rest against each other or against intermediate discs possibly arranged between the tumbler discs only within a small area near the center of the discs.

REFERENCES:
patent: 179887 (1876-07-01), Arnold
patent: 1589256 (1926-06-01), Spruth
patent: 2524339 (1950-10-01), Young
patent: 3548620 (1970-12-01), Genakis
patent: 3681956 (1972-08-01), Niilola
patent: 3972210 (1976-08-01), Toivonen

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