Ammunition and explosive-charge making – Ammunition shell unloading
Patent
1996-05-13
1998-02-03
Tudor, Harold J.
Ammunition and explosive-charge making
Ammunition shell unloading
86 11, 86 50, F42B 3304, F42B 3306
Patent
active
057147078
ABSTRACT:
Small caliber primed cartridge cases are demilitarized by removing explosive primer mix from the cases. The cases are flushed with a chemical solution, preferably a sulfuric acid solution, to dissolve the binder material which holds the components of the explosive primer mix together. Upon dissolution of the binder material, e.g. gum arabic, the primer mix breaks apart into particles which flow forward through the flash hole(s) in the case and exit the open end of the case. The solution is agitated into a turbulent state so as to enter the open end of the hollow case and sufficiently contact the primer mix through the flash hole(s). The treated cases are chemically deprimed in that the explosive primer mix has been removed therefrom; additionally, any primer mix which might remain in the case is rendered inert by the acid solution. The deprimed cases may then be rinsed and dried and used for reloading applications or scrap recovery. The process is particularly suitable for demilitarizing brass cartridge cases as the sulfuric acid solution desensitizes and removes the primer mix without inducing stress corrosion cracking in the cases, which is a significant problem in prior art processes of chemically treating brass.
REFERENCES:
patent: 236611 (1881-01-01), Morris
patent: 1492922 (1924-05-01), Knight
patent: 1492924 (1924-05-01), Knight
patent: 1492925 (1924-05-01), Knight
patent: 1492956 (1924-05-01), Poots
patent: 1706938 (1929-03-01), Roberts
patent: 1958420 (1934-05-01), Deck et al.
patent: 2824482 (1958-02-01), North
Talon Manufacturing Company, Inc.
Tudor Harold J.
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