Oerlikon Contraves Pyrotec Ag

Kurt Meng

Jakob Burri

Karlheinz Fehrenbach

A notching device for fastening a projectile to a cartridge case. The cartridge case may include a shell mouth and a longitudinal axis and the projectile may include an adapter base for insertion into the shell mouth. The adapter base may include at least one circumferential notch inserted into the shell mouth. The notching device may include an elastic ring for exerting a radial compression force on the shell mouth adjacent the at least one circumferential notch to press a portion of the shell mouth into the at least one circumferential notch, and a device for laterally compressing the elastic ring. The lateral compressing device actuating the elastic ring to exert the radial compression force on the shell mouth. The radial compression force may be substantially equal around a circumference of the cartridge case to provide a fluid tight seal. The notching device according to the present invention provides sealed connections between a cartridge case and a projectile and a longer service life than conventional machines of this type.

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Zurich, Switzerland

Kurt Meng