Lock

Details Lock Lock

1978-05-24

1980-03-04

Wolfe, Robert L.

Locks

Operating mechanism

Combination

70315, E05B 3716

Patent

active

041910354

ABSTRACT:
A combination lock, particularly a domestic door lock, comprises a rotatable and axially movable plunger, a plurality of axially displaceable pins disposed around the plunger, a rotary ward disc carried by the plunger and co-operating with slots in said pins to allow rotary movement of the plunger only when selected ones of the pins are axially displaced, relative to the remainder, to have slots therein aligned with the ward disc, and a member carried by the plunger and capable of moving the pins to an aligned position upon axial movement of the plunger. A user can move said selected ones to render the plunger turnable to open the door and then easily pull or push the plunger to cause said member to re-align the pins to prevent the selected pins remaining depressed and the "combination" visible.

REFERENCES:
patent: 1530861 (1925-03-01), Standen

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