Safety lock for window sashes and the like

Details Safety lock for window sashes and the like Safety lock for window sashes and the like

1979-09-28

1981-10-06

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292DIG47, 292152, E05C 104

Patent

active

042931541

ABSTRACT:
A safety lock for window sashes and the like is provided which comprises a bolt and a locking and mounting sleeve adapted to be inserted in a drilled hole in the sash or other member to be interlocked, the sleeve and bolt being provided with detent means for releasably retaining the bolt in fully inserted locked position, a partially inserted locked position and in retracted unlocked position. The bolt has an enlarged head of substantially the same diameter as the sleeve and the sleeve is recessed in the drilled hole so that the head of the bolt lies flush with the outer surface of the sash or other member where it is inconspicuous and cannot be grasped for withdrawal, withdrawal from fully locked to partially inserted locked position requiring the use of a magnet. A modification of the end of the sleeve may be utilized for attaching the sleeve to the outer wall of a sash or other unit having a hollow interior.

REFERENCES:
patent: 1191502 (1916-07-01), Emme
patent: 1236618 (1917-08-01), Stagman
patent: 2497697 (1950-02-01), Smith
patent: 2546149 (1951-03-01), Bowzer
patent: 3078704 (1963-02-01), Rifkin
patent: 3475720 (1969-10-01), Culver
patent: 3642315 (1972-02-01), Alpern

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