Abstract: A plastics cartridge has a cartridge body provided with a flange which has a plastic casing body, open on one side, is for accommodating a propellent charge and an ignition charge for igniting the propellant charge and has a plastics cover for closing the open end of the casing body. A flange is located on the end of the casing body on the cover side. if the cartridge body is inserted into the firing device, the flange extends into a space which passes out of a receiving chamber of a cartridge recess and is formed by cartridge recess and bottom of the breech of the firing device. In the section in which it extends in the propagation direction of the pressure wave arising on ignition of the propellent charge, the flange of the cartridge body is tapered--in the propagation direction--at least over a part of said section. The flange therefore forms a wedge which is inserted into the wedge-shaped space between the cartridge recess and bottom of the breech.

Abstract: A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommodating the propellant charge. A bottom wall of the case member is equipped with a bore aligned with the bore acting as a nozzle. A primer wafer is disposed on the inner surface of the bottom wall, this wafer being thinner in its central zone than in its marginal zone. The central zone of the primer wafer is a region under mechanical thermal stress during compression, the ignition energy being introduced to the primer wafer via this region in the form of hot compressed air from the compression chamber.

Abstract: An electrical ignition device (1) has a metal container (2) for a firing resistor or bridge, a first (3) and a second (4) terminal pin and at least one ignition charge (5, 6).So that firing of the ignition charge does not occur in the event of electrical discharges between terminal pins and a housing, it is proposed that the container (2) be capable of being embedded in a plastic material by injection moulding and inserted in the housing, that a first outward extension (8) be provided on the container (2) which is electrically conductively connected to the first terminal pin (3), and that a second outward extension (9) be provided on the container (2) which can be formed so as to extend to the housing leaving a small clearance and of which an outer end is not embedded in the plastic material.

Abstract: A magazine for cartridges ignitable by adiabatic compression is especially useful for stud driving or setting tools. The magazine has a plurality of cartridges made of synthetic resin and a magazine belt made of synthetic resin for connecting the plurality of cartridges together. The magazine belt forms bottom walls of the cartridges and in the region of each of the bottom walls is provided with an intentional separation zone. A primer wafer is provided on the magazine belt in the region of the bottom wall near the intentional separation zone. Each primer wafer in an area near the intentional separation zone is thinner than in the remaining zone surrounding the area.

Abstract: A cartridge is made up of a synthetic resin case member and a synthetic resin lid. The case member contains a first receiving chamber for receiving an igniter charge and a second receiving chamber for the accommodation of a propellant charge. A synthetic resin ignition pin flexibly connected to the lid extends into the first receiving chamber. Upon the exertion of pressure by a striker on the rear end of the ignition pin, the pin is advanced further into the first receiving chamber, a pointed forward percussion end of this ignition pin acting on the igniter charge to ignite the charge. The igniter charge is accommodated in funnel shape in a conical depression of the first receiving chamber. The percussion end of the ignition pin, extending into the igniter charge, upon displacement, causes friction in the igniter charge material and thus generates frictional heat therein.

Abstract: A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommodating the propellant charge. A bottom wall of the case member is equipped with a bore aligned with the bore acting as a nozzle. A primer wafer is disposed on the inner surface of the bottom wall, this wafer being thinner in its central zone than in its marginal zone. The central zone of the primer wafer is a region under mechanical thermal stress during compression, the ignition energy being introduced to the primer wafer via this region in the form of hot compressed air from the compression chamber.