Drum magazine

Details Drum magazine Drum magazine

1985-07-24

1987-04-21

Bentley, Stephen C.

Ordnance

Cartridge feeding

Drum magazine

F41D 1026

Patent

active

046587004

ABSTRACT:
This invention relates to magazines for guns. The drum magazine of the present invention comprises one or two generally cylindrical drums with openings for the exit of cartridges from within the drum. A spring driven rotor within the drum carries two concentric rings of cartridges in a channel defined by the outer circumference of the rotor and the interior of the cylindrical drum wall. The rotor engages the inner concentric ring of cartridges and each cartridge in the outer ring of cartridges is forced to move by contact with a cartridge of the inner ring. During feeding, the cartridges are advanced as two rings until they meet the cam blade, which gradually forces the cartridges into a single column which moves approximately twice as fast as the velocity of the cartridges in the rotor. When the last cartridge leaves the rotor during feeding and enters the exit passage, a follower arm is provided to continue to push the last cartridge out of the magazine.

REFERENCES:
patent: 2131412 (1938-09-01), Ostman
patent: 4138923 (1979-02-01), Brosseau et al.
patent: 4384508 (1983-05-01), Sullivan et al.
patent: 4413546 (1983-11-01), Taylor, Jr.
patent: 4487103 (1984-12-01), Atchisson

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