Method of forming lead styphnate ammunition priming mixture

Details Method of forming lead styphnate ammunition priming mixture Method of forming lead styphnate ammunition priming mixture

1976-02-12

1977-06-14

Miller, Edward A.

Explosive and thermic compositions or charges

Containing nitrated metallo-organic compound

Nitrated organic compound of lead

149 27, 149 24, C06B 4106

Patent

active

040295303

ABSTRACT:
Ammunition rim fire priming mixtures are commonly prepared by mixing normal lead styphnate, a sensitizer, such as tetracene, an oxygen donor such as lead nitrate, and a frictionator such as ground glass. This invention relates to such a mixture and to center fire priming mixtures which consist of lead styphnate, tetracene, inorganic fuels and barium nitrate and to a method of forming them and is characterized by the use of lead styphnate which is formed in situ by the reaction of a water wet mixture of styphnic acid and a lead compound such as lead oxide (litharge), lead hydroxide, basic lead carbonate, or lead carbonate. Important advantages of this invention are reduced cost, improved safety since it is unnecessary to prepare, precipitate, or separately handle pure or relatively pure lead styphnate and improved percussion sensitivity of the resulting mixtures.

REFERENCES:
patent: 1443328 (1923-01-01), Herz
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patent: 2295104 (1942-09-01), Garfield
patent: 2589703 (1952-03-01), Kenney
patent: 2702745 (1955-02-01), Kenney
patent: 3002012 (1961-09-01), Backensto
patent: 3301882 (1967-01-01), Taylor
patent: 3320104 (1967-05-01), Stadler

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