Firearms – Implements
Patent
1979-02-27
1980-12-02
Jordan, Charles T.
Firearms
Implements
F41C 2700
Patent
active
042363381
ABSTRACT:
Apparatus for adjusting the stress in cartridge magazine springs which are arranged for such adjustment. The magazines are stored with the springs in a non-stressed condition. When use of the magazine is imminent, the springs are adjusted to a stressed condition. Disclosed hereinafter is power-driven and hand-operated apparatus to accomplish the adjustment. The apparatus may be mounted on a firearm, a magazine carrying rack, a vehicle, a boat, an aircraft, or any other suitable base.
REFERENCES:
patent: 3087270 (1963-04-01), Stoner
patent: 3205604 (1965-09-01), Plumer
patent: 3443334 (1969-05-01), Ardolino
patent: 3964199 (1976-06-01), Musgrave
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