US 4,539,890 AGranted

Cartridge infeed apparatus for automatic firing weapons

AssigneeWerkzeugmaschinenfabrik Oerlikon-Buhrle AG

InventorWerner Bosshard

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Abstract

In an automatic firing weapon containing a forwardly and rearwardly travelling breechblock each cartridge is engaged by a breechblock edge of the forwardly travelling breechblock and pushed into the weapon or gun barrel. As soon as the breechblock is in its rearmost position a cartridge is moved through a cartridge feedway or infeed channel into a position from which the same can be pushed into the weapon barrel by means of the breechblock. Since the breechblock assumes its rearmost position only for a brief time period when the firing weapon has a high firing rate or cadence, large forces are required for accelerating the cartridge which is to be infed. Hence, the springs which have been heretofore used are replaced by an insertion lever and a back-up latch or pawl, the insertion or placement movement of the insertion lever being controlled by a control cam of the rearwardly travelling breechblock.

Claims5

Dependent claims

A cartridge infeed apparatus for an automatic firing weapon having a weapon barrel, comprising:

a breechblock displaceable between a rearmost position and a forwardmost position;
at least one cartridge infeed channel having a side wall;
said side wall possessing a slot which extends substantially parallel to a lengthwise axis of the firing weapon and into which slot there partially extends a cartridge located in said cartridge infeed channel;
cartridge infeed means for feeding a cartridge into said slot and holding the same therein so as to partially protrude into said slot when placed in a position for being pushed into said weapon barrel by means of said breechblock;
said cartridge infeed means comprising a two-armed insertion lever;
a control cam provided for said breechblock;
said cartridge being supported at one arm of said two-armed insertion lever and the other arm of said two-armed insertion lever being supported at said control cam;
means for pivotably mounting said two-armed insertion lever relative to said firing weapon;
and
said control cam being structured such that said two-armed insertion lever presses said cartridge into said slot with said one arm thereof when said breechblock is in said rearmost position.

7 more elements

Dependencies are inferred from the claim text.