DE1016162B - Blank cartridge - Google Patents

Description

GERMAN

In the German patent specification 950 716 a blank is described, the sleeve of which is made of thermoplastic Plastic made in one piece and closed at the front. As thermoplastics are called polyethylene and polyvinyl chloride. The plastic parton case must have a have such stability that they ensure safe functioning in automatic fire weapons. Included Continuous fire in machine guns means high mechanical stress and an increase in temperature occur in the feeder and in the cargo hold, throwing and even tearing of the Sleeves enter, also due to the unequal heat conduction of the metallic bottom piece and the Plastic sleeve sleeve tears can occur.

To solve these difficulties, you can strengthen the sleeve wall on the one hand, what a Caused more effort in plastic and labor, on the other hand you can reduce the load in such a way that that tearing cannot occur. This decrease in charge lowers the gas pressure, which is necessary for the return of automatic weapons, so that recoil amplifiers are attached have to. Furthermore, this results in a reduction or attenuation of the muzzle bang, so that the ammunition is not useful for practice purposes.

It has now been found that a thermoplastic material for the production of blank cartridge cases high molecular weight polyolefins with molecular weights of 50,000 and higher and polyamides excellent with low water absorption. These plastics have in addition to the high mechanical Strengths high thermal strengths that are relevant to the use of these plastics for Blank cartridge cases play a major role. The high molecular weight polyolefins are low-pressure polyethylene and called high molecular weight polypropylene.

These plastics are completely free of plasticizers, so that plasticizers cannot diffuse from the plastic sleeve into the powder charge. Since these plastics have very high strengths and the mechanical stresses in machine weapons, such as. B. gripping and feeding stand, the bottom portion can also be made with its tubular extension made of plastic, namely preferential example by injection molding. The sleeve can be pushed onto this base piece in a known manner, with an absolutely gas blank cartridge due to the additional measure of gluing or welding

Applicant:

Dynamit-Actien-Gesellschaft

formerly Alfred Nobel & Co.,

Troisdorf (district of Cologne)

Dr. Ludwig Reuschenbach, Cologne-Buchheim,
Dr. Heinz Ratz, Troisdorf (Cologne district),

Dr. Heinz Gawlick, Pürth (Bay,),

and Dr. Horst Eisner, Troisdorf (Cologne district),

have been named as inventors

a tight fit is achieved. The welding can, for. B. be made in the form that the Plastic sleeve and the tubular extension of the base piece incorporated a resistance wire is, with the electrical welding no great heat is transferred to the outside. from Another great advantage is that the use of these plastics makes the entire blank cartridge out one piece can be produced by injection molding, after filling the cartridge this at the front end is welded shut.

The inventive design of the cartridge results in a plastic cartridge that is particularly good in automatic firearms is usable.

Claims (3)

Patent claim 1. Blank cartridge with plastic sleeve and base piece with tubular extension, thereby characterized in that both parts are made of high molecular weight polyolefins or polyamides with low Consist of water absorption. 2. Cartridge according to claim 1, characterized in that the sleeve with the injection molding process manufactured bottom piece is glued or welded. 3. Cartridge according to claim 1, characterized in that the sleeve and base piece as one piece are manufactured by injection molding, the sleeve being welded shut at the front end after the cartridge has been filled is.