Movable or removable closures – With protective grille or safety guard – Moves relative to primary closure
Patent
1976-03-01
1977-04-26
Caun, Peter M.
Movable or removable closures
With protective grille or safety guard
Moves relative to primary closure
49 67, 49141, 292 42, 292162, F06B 368
Patent
active
040192814
ABSTRACT:
An external steel grating has seven vertical bars welded at their ends to upper and lower horizontal hollow cross bars, end portions of which cross bars are bent rearwardly and secured to a building so that the grating overlies a window opening and protects it against illegal entry.
One end of the grating has a loosely hinged connection with the building and the cross bars are jointed near the opposite end of the grating and locked in assembled relation by a hidden bolt in one of the cross bars. A cable from said bolt extends through the last mentioned cross bar to the interior of said building, which cable, when pulled, withdraws the bolt from its locking position and frees the joints for separation by gravity allowing the major hinged portion of the grating to swing freely outwardly and affording a ready escape from the building through said window.
REFERENCES:
patent: 786668 (1905-04-01), Nussbeck
patent: 810923 (1906-01-01), Dobelman
patent: 2389315 (1945-11-01), Kerr
patent: 2668729 (1954-02-01), Watters
patent: 2917770 (1959-12-01), Etnyre
patent: 3455313 (1969-07-01), King
patent: 3921334 (1975-11-01), Black, Sr.
Caun Peter M.
Keech Dana E.
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