Explosive and thermic compositions or charges – Containing inorganic metal azide
Patent
1995-10-06
1997-03-11
Jordan, Charles T.
Explosive and thermic compositions or charges
Containing inorganic metal azide
149 96, C06B 3500
Patent
active
056103670
ABSTRACT:
A lead-free rim-fire primer mix which utilizes cupric azide, a highly sensitive chemical, as the primary explosive in lieu of lead styphnate. The cupric azide is mixed with carefully selected proportions of nitrocellulose, tetracene, fine particles of ground glass and a binder, typically gum tragacanth. When mixed in the proper proportions, this mix has the required sensitivity, stability, and non-hygroscopicity for regular commercial rim-fire ammunition. The tetracene is not required as a sensitizer, but is used as an ignition aid. The preferred range of percentages are 10-36% by weight of cupric azide, 5-10% by weight of tetracene, 15-30% by weight of nitrocellulose, 20-50% by weight of glass, and 1-2% by weight of a suitable gum.
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Erickson Jack A.
Hallis John M.
Kramer Robert L.
Melberg John M.
Federal-Hoffman Inc.
Hardee John R.
Jordan Charles T.
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