US 4,468,875 AGranted

Cartridge magazine for direct ejection of a cartridge into the firing chamber of a firearm

AssigneeCreative Metal Forming, Inc.

InventorsEdwin L. Harrison, Ronald D. Retzlaff

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Abstract

A removable cartridge magazine for firearms adapted to engage the firing chamber of a firearm comprising an elongated housing, a first gear rotatably mounted in one end of the housing adjacent the portion of the housing that engages the firing chamber of the firearm, a second gear mounted at the other end of the housing, an endless belt encircling the gears and engagable therewith whereby rotation of said gears rotates said belt, the belt being spaced inwardly from the inner wall of the housing, a plurality of spaced shell receiving compartments mounted along the outer periphery of said belt adjacent the inner wall of the housing, each compartment being an elongated groove extending longitudinally across the outer surface of the belt adjacent the inner wall of the housing in a direction traverse to the direction of movement of the belt. Each compartment is adapted to receive a cartridge shell therein which is retained in position on the belt between the inner wall of the housing and the compartment and each compartment is selectively presented into position for direct ejection into the firing chamber when the belt is rotated. The gears are motor driven and various components of the magazine may be of molded plastic with a transparent cover so that the capacity of the magazine is clearly visible.

In a magazine for firearms having a clip portion adapted to snap-fit into the receiver portion of a firearm and adjacent the breach of the firing chamber thereof and to selectively present cartridges carried thereby into position for direct ejection therefrom into such firing chamber, the improvement comprising:

said magazine including an elongated housing extending from said clip portion having an outer peripheral wall, a rear wall closing off the back of said housing and a front wall closing off the front of said housing thereby providing an enclosed chamber extending from said clip portion to said housing portion;
a first drum rotatably mounted internally of said chamber within the clip portion to be disposed at the breach end of said chamber;
a second drum rotatably mounted internally of said chamber at the other end of said housing opposite said first drum;
each of said drums having a plurality of spaced gear teeth about the outer peripheries thereof, one of said drums being an idler drum, the other of said drums being a drive drum;
and
an endless belt encircling said drums and having spaced gear teeth on the interior thereof directly engaging and meshing with the gear teeth on said drums whereby rotation of said drums rotates said belt;
said belt being spaced from the inner walls of said outer peripheral wall and having one end thereof entering said clip portion wrapping around said first drum past said chamber and having a plurality of spaced cartridge receiving chambers extending along the outer periphery of said belt, each of said cartridge receiving chambers being generally concave in cross-section and extending across the outer peripheral face of said belt in an axial direction generally normal to the direction of rotation of said belt when said belt is rotated by said drums;
and
motive means engaging said drive drum for rotating said drive drum thereby rotating said belt to present selective ones of said cartridge receiving chambers on said belt into the interior of said clip portion for direct ejection of a cartridge therein directly into the firing chamber.

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Abstract

Claims10