Abstract:
An elastic retention ring for the combustible casing of a piece of ammunition with respect to a base, the ring including two concentric substantially ring-shaped portions, one internal the other one external. The portions are linked by radial arms, and are continuous or not and have different diameters. The external portion incorporates at least one plane part and the radial arms form an angle with respect to the plane of plane part.
Abstract:
A performance enhanced ammunition unit composed of a front ammunition component (1) and a rear ammunition component (2) which each include a combustible propelling charge casing (7, 12), with the rear ammunition component being filled with propelling charge powder that has been compressed into a compressed member (15). The rear ammunition component (2) has a casing bottom (13) which accommodates a bottom igniter (14) and the compressed member (15) accommodates a combustible ignition tube (16) for the propelling charge igniter (16, 17), with the combustible tube 16 being in operative engagement with the bottom igniter (14) and extending along substantially the entire axis of the bottom component. Both ammunition components (1, 2) are separated by a combustible disk (18), the front ammunition member (1) is filled in its cylindrical section (8) filled with powder rods (10) and in its section (a) ahead of the powder rods with bulk propelling charge powder (11).
Abstract:
A cartridge assembly is provided, in one embodiment, comprising a combustible casing with an open forward end and an open breach end, enclosed at the breech end by a thin metal stub casing, a projectile assembly mounted in the forward end, an igniter assembly, a resilient obturator pop riveted to the casing, and annular sabot, and a plurality of flexible combustible priming tubes immersed in a propellant charge and extending the length of the casing. In another embodiment, the combustible casing comprises two separate casings joined together with fasteners, each casing having a set of flexible combustible priming tubes, an interface portion defined between the two where respective ends of combustible priming tubes abut. In both embodiments, the priming tubes combust rapidly producing complete ignition of the propellant charge and resultant stable projectile flight.
Abstract:
An ammunition cartridge is disclosed comprising a projectile threadably attached to a combustible case body via a threaded combustible case adapter. At least one of the adapter end have an uniform density of polyurethane resin to provide strength and sufficient support for the threads. The combustible case body may also have an uniform resin density to support threads corresponding to those on the rear end of the adapter. The preferable uniform polyurethane density is about 0.75 grams per cubic centimeter.
Abstract:
The invention relates to the field of combustible ammunition and relates chiefly to the manufacture of bottoms or covers for combustible cases.According to the invention, a combustible article is manufactured by pressing in a die 10 at least one sheet 21 of combustible paper containing nitrocellulose and having the shape of a disc, by virtue of a rigid movable punch 20 exerting a compressive force on a deformable flexible punch 22 arranged inside the said die 10 between the sheets 21 and the said movable punch 20. The flexible punch 22 is in the shape of a substantially cylindrical thick disc, consists of neoprene or a silicone resin and has a hardness of between 55 and 65 Shore at 20.degree. C. The pressing operation is accompanied by a thermoforming operation carried out at approximately 115.degree. C.The process is particularly suitable for the production of bottoms of combustible cases bearing studs or grooves on their side faces.
Abstract:
Process for the manufacture of combustible articles by embossing combustible paper and combustible articles thus produced.The invention relates to a process for the manufacture of combustible dish-shaped articles of revolution with circular external outlines from combustible paper containing nitrocellulose by embossing at least one combustible paper disc 11 comprising a central part 12 and a peripheral part consisting of a plurality of portions 13 separated from each other by radial slits 14 the length "L" of which is smaller than the radius "R" of the said disc 11 and the width "e" in which is at least equal to the minimum width required to prevent the overlapping of the said portions 13 when the disc 11 is deformed by embossing.The invention also relates to combustible dish-shaped articles of revolution with circular external out-lines, consisting of at least one sheet of combustible paper containing nitrocellulose and in particular those produced by the process according to the invention.These articles have their essential application as components for combustible cases and especially as combustible bottoms or as combustible lids.
Abstract:
A gunpowder substitute which is capable of also being molded into a consumable cartridge or cartridge case comprising between 50% to 75% by weight of an inorganic nitrate and between 25% to 50% by weight of an organic acid including ascorbic acid, erythorbic acid and mixtures thereof.
Abstract:
A self-propelling projectile comprising a projectile body at the normally forward end of said projectile, a propellent charge at the normally rearward end of said projectile, and a primer element located between the ends of said projectile for ignition by side firing or percussion; there being means for maintaining said components in integrated relationship and with communication between said primer elements and said propellent charge whereby upon explosion of said propellent charge the force of the latter will be directed against the base of the projectile body.
Abstract:
A unitary combustible or explosive munitions container of uniform cross-section but of non-uniform linear composition is provided by depositing under suction two different fluid aqueous suspensions of fibrous propellant material and cellulose papermaking fibers on different touching zones of a hollow foraminous shape having an interior under vacuum, thereby forming a water-laid web on said shape, hot pressing the web to desired shape, and trimming the product to size. The process is suitable for the manufacture of cartridge cases and other ammunition containers.
Abstract:
Electroless metal coatings of increased adhesion are obtained on nitrocelose base explosive films, grains, etc., by incorporating ammonium perchlorate in the nitrocellulose explosive substrate to be electrolessly coated with the metal.