Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1976-12-27
1979-01-09
Lanham, C.W.
Metal working
Method of mechanical manufacture
Assembling or joining
29445, 70366, B23P 1300, B23P 1500
Patent
active
041330935
ABSTRACT:
A method for the production of a cylinder lock with a fixed cylinder housing, a turnable cylinder therein and a number of locking discs turnable by the key of the lock; a locking bar operable in the radial direction by the locking discs locks the cylinder to the cylinder housing. The method provides the lock cylinder with locking discs without peripheral recesses allowing the opening of the lock; the locking discs are turned with a key member into an opening position defined by the key member; and a joint groove corresponding to the form of the locking bar is machined into the set of locking discs at the position of the locking bar. Each of the locking discs is provided at the right position with a peripheral recess allowing the opening of the lock. The operation can be repeated with other key members for providing the lock mechanism with a desired number of opening combinations usuable in mastered locking systems.
REFERENCES:
patent: 914700 (1909-03-01), Christensen
patent: 1677432 (1928-07-01), Croning
patent: 1953535 (1934-04-01), Hurd
patent: 1979939 (1934-11-01), Jacobi
patent: 2570765 (1951-10-01), Cerf, Jr.
patent: 3002268 (1961-10-01), Spain
patent: 3695073 (1972-10-01), Prescott
patent: 3972210 (1975-09-01), Toivonen et al.
Hurskainen Oiva
Pusa Ilkka
Crane Daniel C.
Lanham C.W.
Oy Wartsila Ab
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