Method and apparatus for production of cartridged propellant...

F - Mech Eng,Light,Heat,Weapons – 42 – B

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F42B 1/00 (2006.01) F42B 33/02 (2006.01)

Patent

CA 1235006

ABSTRACT The present invention relates to a method and an apparatus for production of cartridged propellant charges for barrel weapons with charge weights up to 1.4 kg/litre. According to the invention, more granular or particle-shaped propellant powder is driven down or compacted than can be housed in free-running condition within the same volume by means of a piston or plunger in a single stage into a case, the inside of which is coated with a friction-reducing compound. The piston or plunger can then be provided with an elastically deformable loading part of e.g. rubber, and/or with a conically tipped leading end. According to one variant of the invention, the powder is pressed down into a bag of combustible fibre material which has been inserted in advance down into the case coated internally with a friction-reducing com- pound or which has itself been impregnated with a friction-reducing compound. The invention also enables the powder to be compacted to advantage at a temperature that is higher than the room temperature.

474700

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