Cartridge Primer

Fig 64 for 4.2-inch Mortar Projectile, M329). This action expands the rotating disk, engaging it in the rifling of the mortar tube, and imparts spin to the proj as it leaves the muzzle in order to achieve stabilization in flight (Refs 17, 41 52) 

Initiating components used in fuzes of artillery projectiles are described in Sections 4 5, while those used for bombs are described in Section 6 

A detonator, in general, can be defined as a device intended to initiate by means of a detonating wave a high-explosive, such as used in military demolition devices or in land mines. Such devices when used for commercial explosives are known in US as Blasting Caps [See p B185 in Vol 2 of Encycl (Ref 44)1 but in GtBritain they are called Detonators. The term detonator is often 

The term detonator has also been referred occasionally to devices used to destroy some ordnance items, but the term Destructor, Explosive is preferred [See Vol 3 of Encycl, p D92-R (Ref 48)] 

The following firing devices used for initiation- of land mines and demolition explosives are also known as detonators (Ref 30a, pp 50-4 Ref 32b, pp 121-27 and Ref 53, pp 34-9) 

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Section 200 (Methods 201 to 212). Specification of Multiple Component Primer Compositions Fuze Powder Primer Mix, (JS Standard Primer Mix, New No 4 Primer Mix, MK V Primer Mix, No 70 Primer Mix, PA100 Primer Mix, NOL No 130 Primer Mix, M3 Ignition Cartridge Primer Mix, M29 Percussion Primer Priming Composition, Lead Starter Type RDX Booster Pellets and Tetryl Booster Pellets... 

Seal any spaces between the mine cover and tube with an aerosol sealant to keep moisture out. Do the same to all corners and cracks. lOl To arm Che mine, carefully slide the plunger Into Che tube so that the nail Is about 1/8" from the cartridge primer. 

Sometimes the lever spring will not remain in place, but will slip out. To remedy the evil, take a common Berdan cartridge primer, or any other kind will do. only take one that has been used or has had the priming removed, put inside it a drop of solder, ing acid and a bit of solder, enough to fill it when melted. Hold it over the lamp until the wider fuses. When it has coded, wet the charger with a touch of the add just where the bend of the spring comes, and there place the primer with the solder next the wet place. Hold it in position with a bent piece of wire or a strip of steel bent like a loop. Hold over the lamp, with the primer downward, until the solder is melted. Replace the spring, axKl it will be found that it will remain firmly in its place. 

A cartridge primer is a small copper or brass cup containing a precise amount of stable but shock-sensitive explosive mixture, with ingredients such as ... 

Fig 4 is a sketch showing the components of typical primer caps for small arms cartridges,... 

Rare earth elements, with relatively high thermal neutron activation cross-sections, have been tested or considered as tagging species for this purpose. At GA (Ref 8), preliminary expts were conducted with 0.38 cal ammo using dysprosium (Dy) and europium (Eu) deposited on the wall of the cartridge case and in the gunpowder, and Dy, hoKnium (Ho) and indium (In) in the primer. 

Pin-Fire Cartridge System. A cartridge ignition system invented in 1836 by LeFaucheux of Paris. It was the first practical cartridge system which contained in one unit the cartridge case, the propint, the bullet and the primer cap. A version of this invention is still used today in blank pistols designed in Europe. The cap was... 

Popping" A term used to designate the heat treatment of empty or Fired small arms ammo cartridge cases prior to shipping them as scrap. This treatment is necessary to insure that no unfired primers remain among the cartridges... 

The Bloehm primer is a slight variation of the Berdan type. The anvil is not an integral part of the cartridge case, but takes the form of a spade which is inserted into the centrally located primer vent in the cartridge case, after which the charged cup is inserted... 

The choice of an available primer for a cartridge is dependent on the energy available in... 

Sensitivity testing of primers (Refs 3 IS) is conducted with the primers inserted into the specified cartridge case in which they are to be used. The primer is inserted into the primer pocket of the cartridge case so that.the surface of the primer cup, when measured from the center of the primer, is within the tolerance specified on the applicable cartridge drawing. The test is performed in accordance with the complete run-down method described in TECP 700-700, Volume III. AMCR 717-505, Volumes 3 and 5 or AMSMU-P-715-501 FA1, as applicable... 

The larger rifles such as the familiar military rifle use cartridges of the type shown in Fig. 19.3. The relatively heavy base contains centrally a pyrotechnic percussion igniter (cap) and also a rim on which the ejector mechanism operates. Bullets can be made of various materials, but the detailed construction depends on whether they are to be used for armour piercing, anti-personnel, incendiary or tracer purposes. In operation, the primer is fired by the striking pin of the rifle, the propellant ignites and the... 

Miller, J., APE 1011M6 Operational Shield Tests MK39 Primer In Empty 6 lnch/47 Cartridge Case (1340 Grains Black Powder), Ammunition Equipment Directorate, Tooele Army Depot, Tooele, Utah, D/AE Report 05-82, 22 February 1982. 

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