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 element 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: The invention concerns a percussion primer for ammunition without case or ammunition with combustible case of the type comprising a sensitive composition 6 placed against an anvil 7.The anvil is developed in a combustible block 4 provided with a vent 5 arranged at a conical end of the combustible block 4 and coaxial with a firing pin 3 with flat end firmly connected with the weapon; the anvil is formed of the sharp edge of the conical end of the block defining the vent and fits the shape of the cross section of the firing pin, in order to permit the shearing of the sensitive composition.The primer in accordance with the invention is of great selectivity and is practically insensitive to accidental percussion.

Abstract: The technical area of the present invention relates to an anti-tank weapon comprising a finned projectile of the arrow type and a launching shoe.The projectile of the invention comprises a shoe 2 the rear portion of which has fins 10 provided with pins 11 which rest against the compression cone 7 of the tube of the weapon. These fins make it possible to obtain practically constant compressive pressure and assure a proper guidance of the projectile during the barrel phase.Application to the field of armaments.

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 protective surface coating for ammunition having no cartridge casing and ammunition having a combustible cartridge casing. A body of highly porous nitrocellulose is permeated from the outside with a polymer carried by a solvent to form a binder for the body. A layer of metal platelets containing airpockets is bound to the body with a binding polymer. The metal platelets are covered with an outer coating of a rapidly curing resin. The protective coating is used to prevent the penetration of moisture into the porous cartridge casing or into the powder mass itself and to provide improved stability to heat and flames.

Abstract: A cartridge-type munition comprising a casing and a projectile in which the casing at least in part is constituted of combustible and destructible material. According to the invention, a first connection between the projectile and the casing is formed by a neck engaging the periphery of the projectile which is also formed with a boss or projection at its rear end engaged by radial elements forming a second connection with the casing axially spaced from the first connection.

Abstract: The invention relates to the field of combustible objects used in weaponry and in particular to the field of combustible cartridge cases.The combustible objects according to the invention are covered with a thin layer of varnish, based on an organic binder, containing hollow microbeads, the said varnish being based on a binder chosen from the group comprising chlorinated rubbers, polyvinylidene chloride, cellulosic binders, glycero-phthalic binders, polyurethane resins and polyepoxy resins. The varnish contains between 5 and 20% by weight, preferably about 10%, of hollow microspheres, relative to the dissolved polymer, and optionally between 2 and 15% by weight of an energy-producing charge having a self-ignition point above 200.degree. C.The combustible objects according to the invention exhibit delayed self-ignition if they are placed in contact with a hot wall, without their thermodynamic properties being adversely affected.

Abstract: A protective surface coating for ammunition having no cartridge casing and ammunition having a combustible cartridge casing. A body of highly porous nitrocellulose is permeated from the outside with a polymer carried by a solvent to form a binder for the body. A layer of metal platelets containing air-pockets is bound to the body with a binding polymer. The metal platelets are covered with an outer coating of a rapidly curing resin. The protective coating is used to prevent the penetration of moisture into the porous cartridge casing or into the powder mass itself and to provide improved stability to heat and flames.

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 element 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: The projectile and propellant portions of two-piece cartridge are separately fed to a gun. In one embodiment, the gun is of the type having a cylinder defining a plurality of chambers and a single barrel. The cylinder rotates through a number of positions during each revolution during which the projectile and propellant portions of a cartridge are separately loaded into each chamber, the cartridge is fired and the chamber is cleared.

Abstract: Unit charge of propellant powder, which can be fragmented and has the ballistic properties of a granular charge. A charge of this type consists of 85 to 97% of grains of propellant powder containing nitrocellulose and 15 to 3% of a thermoplastic energy-producing binder which is in the form of small solid grains, under normal conditions, and has the following composition:(a) 30 to 60% of polyvinyl nitrate,(b) 70 to 40% of nitrocellulose having a low nitrogen content, or polyvinyl acetate or a mixture of the two, and(c) optionally, a stabilizer.The use of a solid binder makes it possible to mix the propellant powder with the said binder homogeneously and instantaneously, to introduce precise amounts of the mixture thus obtained into a mould and to simplify the moulding operations.