Double hook-bolt mortise lock

Details Double hook-bolt mortise lock Double hook-bolt mortise lock

1989-10-30

1990-09-25

Wolfe, Robert L.

Locks

Operating mechanism

Key

70355, 292 51, E05B 2502

Patent

active

049585088

ABSTRACT:
A double hook-bolt mortise lock includes a cam form tumbler plate assembly comprised of a plurality of cam form tumbler plates driven by the steps of a key to define a space passage for passing therethrough of the key into a brake notch to further drive the cross bar of a main brake frame to move from one stop hole to the other. During movement of the main brake frame, an auxiliary brake frame is carried by means of two idle gears to make a rectilinear motion toward or against the main brake frame so as to drive the gears of two hook bolts to rotate, by means of the rack portions of the main and auxiliary brake frame, to further let the two hook bolts lock up with or lock from a striking plate.

REFERENCES:
patent: 567290 (1896-09-01), Bruns
patent: 982863 (1911-01-01), Phillips
patent: 1386641 (1921-08-01), Marino
patent: 1829596 (1931-10-01), Lality
patent: 1829938 (1931-11-01), Kromer
patent: 4587815 (1986-05-01), Gil

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