Primers, cap type

Article containing a primary explosive substance and not having two or more effective protective features. Some articles, such as detonators for blasting, detonator assembhes for blasting and primers, cap-type, are included, even... 

Primer, see Initiating Explosives, p.l 19 Primers, cap type, see Initiating Explosives, p.ll9... 

Primers, Cap Type Articles consisting of a metal or plastics cap containing a small amount of primary explosive mixture that is readily ignited by impact. They serve as igniting elements in small arms cartridges, and in percussion primers for propelling charges. UN App. B, ICAO A2, US 173.59, lATAApp. A... 

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... 

Detonators are used to detonate high explosives. Stab detonators are initiated by sharp firing pins and are used in explosive trains of different types of fuses. Flash detonators are initiated by flames produced by safety fuses, primers, or delay elements. A special type of flash detonator ignited by the flame of a safety fuse is called a blasting cap. Detonators are primarily composed of three types of explosives including sinoxid mixtures, lead azide-based mixtures, and mercury fulminate-based mixtures. 

A)BTidgeless. Type Electric Cap. It consisted of a cylindrical casing (Zin--plated steel)(See Fig E18), contg a primer mixture (presumably Pb dinitroresorcinate and Pb Azide), a pole piece, Insulating cap, Pb/Sn foil. washer(attachT ed by. shellac to an insulating material washer) and a contact ring. A current of 120 to 160 volts was required to fire the primer (Ref l,pp 75 77 and Ref 2,p Ger 138- L... 

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