Industriewerke Karlsruhe-Augsburg Aktiengesellschaft

Helmut Mader

Gerhard Hupp

A firearm comprises a stock having a barrel mounted thereon for the magazine chamber associated with the stock which has a passage for the cartridges extending between an interior chamber of the magazine and the cartridge chamber associated with the barrel. The magazine is constructed to contain a plurality of cartridges therein for example in an annular arrangement around a rotatable cartridge transport star. The cartridges are arranged in parallel relationship to the magazine chamber and they are moved by the transport mechanism during the firing operation successively into association with the cartridge chamber of the barrel. The magazine is also provided with an opening which provides means for mounting a cartridge clip or carrier so that cartridges may be loaded into the magazine through the opening which is communicable with the chamber in the magazine for the cartridges. In one embodiment, the communication is established by rotating an interior holder arranged within the magazine so as to shift a tangentially extending passage portion which extends from the cartridge chamber in the magazine to the cartridge chamber associated with the barrel into a position in which the passage is aligned with the loading opening rather than with the cartridge chamber of the barrel. In another embodiment, the loading opening communicates upon insertion of the clip directly with an annular cartridge space in the magazine on one side thereof after a cover closing the opening is positioned in a location to block the further upfeed of the cartridges into alignment with the barrel cartridge chamber.

Firearm and magazine construction

A firearm, comprises a gun housing having a side opening and a gun barrel supported in the housing with a projectile bore which is alignable with a cartridge chamber of a cartridge holder. The cartridge holder is mounted on a bearing member which is journaled in the housing at a position overlying the barrel. A charge handle projects out of the housing and it is guided on the bearing member and is movable relative to the bearing member to cause rotation of the bearing member with the cartridge holder in order to project the cartridge chamber out of the side opening of the housing to a cartridge ejection and loading position. In the cartridge ejection and loading position, an injector pin, which is under the force of a compression spring, is actuated to drive an ejector pin through the chamber and eject any cartridge which may still remain in the chamber as a result of a misfire. The return movement of the charge handle under an action of a compression spring causes return of the cartridge holder, with a new cartridge positioned in the chamber, and it also effects the loading of the ejector pin for the next operation.

Firearm construction having mechanical means for the ejection of

A firearm, particularly a short firearm for firing caseless ammunition, comprises a housing having a sleeve fixed therein with first and second spring members which are biased against a projection on the gun barrel in order to hold it against axial displacement in each direction. The barrel includes a breech portion with a magazine chamber, and cartridges are moved out of the magazine chamber into a cartridge chamber by a gas piston which is displaceable in a lock member which, together with the gas piston, seals the space in the cartridge chamber behind the cartridge during firing. The lock member includes projections which are engaged behind recesses of the rear breech portion of the barrel. The firing pin gas piston is moved rearwardly during firing, and it has a pin connection to a lock slider so that it and the lock member are rotated to move the projection on the lock member out of alignment with the projections of the breech portion of the barrel so that the lock member and the firing pin may be tracked against the force of a return spring. In a subsequent forward movement of the firing pin and the lock member, the next cartridge in the magazine is positioned in the cartridge chamber with the projectile portion located in the barrel for firing.

Firearm construction

A firearm, particularly a compact weapon for firing caseless ammunition, comprises a support having a handle and a firing trigger adjacent the handle connected to a firing mechanism in the butt preferably for firing caseless ammunition. A plurality of barrels are arranged in parallel relationship on the support and a magazine is rotatably mounted on the support between the support and the butt which is pivoted at the end of the support. The magazine includes a plurality of radially spaced circumferentially extending rows of cartridge receiving bores which are aligned with the respective barrels and adapted to be indexed into association with each barrel. The magazine includes means for sealing the bores during the firing of the cartridge and for permitting the passage of the pressure gases to a control bore having a control piston therein which is movable by the combustion gases to index the magazine during each firing.

Growing community of inventors

Schramberg, Germany

Helmut Mader