Safety lock for security window gratings

Details Safety lock for security window gratings Safety lock for security window gratings

1985-09-09

1987-01-27

Dorner, Kenneth J.

Movable or removable closures

With protective grille or safety guard

Moves relative to primary closure

49141, 49402, 292267, E06B 368

Patent

active

046385967

ABSTRACT:
In a hinged security window grating that cannot be opened from the outside but which is readily releasably from within by the lowering of a vertical locking bar that engages the closed grating. The release mechanism includes a tubular member attached to the building wall for slideably engaging the lower end of the locking bar. The tubular member and corresponding point on the locking bar have slots which are engaged by one end of a pivoted lever, the opposite end of which has a pedal which, when depressed, pivots the lever so that it withdraws from the slots to permit the locking bar to vertically drop to release its lock on the grating.

REFERENCES:
patent: 911175 (1909-02-01), Stevenson et al.
patent: 1773751 (1930-08-01), Reidhaar
patent: 2345720 (1944-04-01), Winge
patent: 2409007 (1946-10-01), Young
patent: 4249345 (1981-02-01), Littleton

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