Firearms – Safety mechanism – Magazine operated
Patent
1993-11-12
1995-02-14
Brown, David
Firearms
Safety mechanism
Magazine operated
42 7004, F41A 1736
Patent
active
053883624
ABSTRACT:
An auxiliary safety device intended for use as a magazine safety with a semi-automatic pistol of the Makarov design, said pistol being a blowback-operated, magazine-fed that is operable in double-action or single-action modes. The pistol's factory-original parts include a sear that pivots with respect to the pistol's frame about an axis that is defined by a transverse support post. The pistol has a sear cam that operates on the hammer in double-action operation, and operates on the sear in single-action operation. The auxiliary safety device includes two parts, the first being a relatively thin structural plate having front and rear portions. A relatively large and generally circular opening is located about midway between the front and rear portions; the opening is large enough to fit around and rotate with respect to the transverse post. The second part is a torsion spring adapted to be mounted on the transverse post for always biasing the plate to a position where it encroaches slightly into the pistol's magazine well. When the magazine has been removed from the well, the structural plate rotates forward (by about 50.degree.); its rear portion then blocks normal movement of the sear cam, thereby precluding firing of the pistol. When a magazine is inserted into the well, the plate is rotated backwardly, and the pistol will operate normally. None of the original Makarov pistol parts require modification in order to accept the auxiliary magazine safety.
REFERENCES:
patent: 1024932 (1912-04-01), Vander Haegben
patent: 1719384 (1929-07-01), Tansley
patent: 3415000 (1968-12-01), Koucky et al.
patent: 3715826 (1973-02-01), Seifried
patent: 3857325 (1974-12-01), Thomas
patent: 4031648 (1977-06-01), Thomas
patent: 4428138 (1984-01-01), Seecamp
patent: 5225612 (1993-07-01), Bernkrant
Brown David
International Armament Corporation
McHugh Charles W.
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