Firearms – Implements – For barrel cleaning
Patent
1997-02-28
1999-09-07
Jordan, Charles T.
Firearms
Implements
For barrel cleaning
F41A 2900
Patent
active
059468432
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method for cleaning the barrel of a firearm.
The barrel of a firearm has to be cleaned at regular intervals to remove the remnants of bullets and combustion residue such as soot, powder and bunt grease, accumulated in the barrel. In this context, bullet remnants means the metal residue left in the barrel from bullets, such as, in the case of commonly used bullets containing copper, residue of copper, possible copper compounds and other alloyed metals, e.g. copper and zinc residue and, in the case of lead bullets, lead residue.
Various methods and cleaning agents for the cleaning of a so barrel are known. However, current cleaning methods often involve mechanical cleaning by scrubbing the barrel with a hard brush, such as a bronze brush. For example, in a commonly used cleaning method the cleaning agent contains aluminium particles which scrub off impurities from the barrel surface during mechanical cleaning.
Mechanical scrubbing is a laborious and time-consuming operation. Naturally it also causes wear of the barrel surface, thus shortening the service life of the firearm.
To remove the copper residue left in the barrel from copper bullets, cleaning agents acting chemically on copper have also been tried. This type of cleaning agents usually contain ammonia, and the problem has been that ammonia is very volatile, i.e. the cleaning agent quickly becomes ineffective as the active component evaporates. Furthermore, when such cleaning agents are used, the barrel must nevertheless be cleaned mechanically as well, so they do not eliminate the drawbacks associated with mechanical cleaning. Moreover, the evaporating game are detrimental and undesirable. EP specification 75 113 presents a composition of substances that contains ammonia or amine compounds mixed in a gel to prevent evaporation.
In addition, the commonest cleaning agents currently used are relatively expensive,
The object of the present invention is to eliminate the drawbacks referred to above.
A special object of the invention is to produce an effective cleaning method of a new type that reduces the need for mechanical cleaning and thus significantly extends the service life of the barrel.
A further object of the invention is to produce a new type of cleaning method that is faster and more user- friendly than earlier methods.
As for the features characteristic of the invention, reference is made to the claims.
The invention is based on the unexpected observation made during investigations that bullet residue can be removed by using a foam that, in the case of bullets containing copper, contains an alkaloamine and, in the case of bullets containing lead, a nitrate salt. Thanks to the invention, a method has now been discovered that makes it possible to effectively and quickly remove the metal residue left by bullets in a barrel, without damaging the steel of the barrel.
In the method of the invention, ammonia can also be used for the cleaning of a barrel because the foam prevents evaporation of ammonia, so the cleaning agent does not lose any of its effectiveness.
For the first time, the present invention produces a firearm cleaning method that uses a foam containing substances that remove bullet residue. The foam to be used can be produced by using a tenside. The tenside may be any commonly used, foam-producing surface-active substance, such as coconut diethanolamide.
Further, nitrate salt has now been used for the first time as a material that chemically removes bullet residue. It was observed during investigations carried out that lead residue in a barrel reacts due to nitrate salt in a way that allows the lead to be removed from the barrel surface without mechanical scrubbing. The nitric salt used is preferably an inorganic nitrate, such as alkaline nitrate, alkaline earth nitrate or ammonium nitrate, especially sodium nitrate. In the method of the invention, the cleaning can be performed by using any substance that forms a foam, preferably a consistent foam, that contains e.g. exclusively nitrate salt, in which
REFERENCES:
patent: 1484690 (1924-02-01), Walker
patent: 3037887 (1962-06-01), Brenner et al.
patent: 3740883 (1973-06-01), Kyle
patent: 3814525 (1974-06-01), Spencer
patent: 4482469 (1984-11-01), Plotze
patent: 4497082 (1985-02-01), Kogasaka
patent: 4873778 (1989-10-01), Stipp
Chelliah Meena
Jordan Charles T.
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