Artillery Propellant Primers or Primer-Igniter

To the definition given under item (a), may be added that propellant igniters consist of a charge of quick-burning BkPdr (See BLACK POWDER in Ref 44, p B171), which can be either in the form of a compressed disc attached to a simple primer or in the form of small grains contained in a perforated tube. In a 3rd method, loose BkPdr is contained in a Small cloth bag which is placed, during 

More detailed description and cutaway views of artillery primer-igniters will be given after a brief description of ammunition in which such initiating devices are used. Cutaway views of typical fixed, semifixed and separated rounds of ammunition are in- 

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