Key actuated auxiliary door lock

Details Key actuated auxiliary door lock Key actuated auxiliary door lock

1975-10-16

1978-02-28

Moore, Richard E.

Closure fasteners

Extension link

E05C 1704

Patent

active

040762920

ABSTRACT:
A door lock for use with an auxiliary door holding mechanism that is in addition to the conventional door lock. An auxiliary door holding plate is adaptable to be locked and unlocked from outside the door by means of a conventional key-actuated driver bar. The door holding plate may also be locked from inside the door. The door holding plate also permits the door to be held against further opening from a partially open position. In one of the embodiments of the invention a device is employed for swinging the auxiliary locking plate from an unlocked position to a locked position by the closing movement of the door. By another embodiment of the invention the auxiliary locking plate is moved from unlocked position to locked position from outside the door after the latter has been closed.

REFERENCES:
patent: 534716 (1895-02-01), Hillgendorf
patent: 1497500 (1924-06-01), Gorovitz
patent: 1546182 (1925-07-01), Pohlig
patent: 3432198 (1969-03-01), Connor
patent: 3433518 (1969-03-01), Foltz
patent: 3924885 (1975-12-01), Markovitch

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