Firearms – Implements – For barrel cleaning
Patent
1996-01-03
1997-08-19
Carone, Michael J.
Firearms
Implements
For barrel cleaning
F41A 2902
Patent
active
056575700
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for the maintaining of inner surfaces of gun barrels.
The term guns is specifically understood to mean handguns and shoulder arms.
The term maintenance of the inner surface of a barrel is understood to indicate cleaning as well as lubrication of the inner surface for guiding projectiles fired by this barrel.
The invention also relates to a process for manufacturing the above-mentioned device.
In the field of firearms, it is customary, after using a gun, to remove the deposits of substances resulting from the sublimation of propulsive agents such as gunpowder which are deposited on the inner surface of the barrels during firing.
These deposits must be removed, since their accumulating and/or remaining in the barrel can impair the operation of the gun equipped with this barrel.
What is usually used to remove these deposits is a gun swab brush, that is, a device which essentially comprises, on the one hand, a movable member equipped with a handle and constituted by an elongated body which is longer than the barrel and can fit inside it, and on the other hand, a functional part such as a brush or a fiber swab attached to one of the ends of this body.
Generally, the elongated body consists of a rigid rod which is preferably constituted by an assembly of several sections so that it can be disassembled for storage in a small space.
Likewise, it is known that the elongated body is constituted by an assembly of elements articulated like chain links, each of the elements or links having a substantially cylindrical, rotating type of casing.
The brush used usually consists of a cylindrical brush with a diameter slightly larger than the internal diameter of the bore of the barrel which is attached, and specifically screwed, to the end of the movable member, with its longitudinal axis being substantially the same as that of the member.
As for the fiber swab, it is generally constituted by a fiber string held in place by a special piece attached, and specifically screwed, to the end of the movable member.
The term fiber string is understood to mean a scrap of fabric or a section of a cylindrical body constituted by bunch of fibers.
This special piece consists of a plate having a width slightly smaller than the internal diameter of the barrel and a minimal thickness which is limited in order to give it a certain mechanical strength, which plate includes an oblong slot through which the string is inserted before being folded so as to constitute the swab which must be inserted into the barrel.
This type of holding piece effectively ensures the intended operation, but the insertion of a fiber string into the oblong slot it contains requires a certain precision which cannot be obtained by an operator under certain conditions, particularly, for example, climatic conditions in which his fingers have been numbed by the cold.
Be that as it may, in order to clean the barrel, the passage of the functional part of the gun swab brush through the barrel is forced by action, and specifically by traction, on the body which carries it.
These known devices are particularly suitable for the maintenance of hunting guns with shotgun barrels, that is guns which are intended for firing lead shot and in which the internal diameter of the barrel approaches or even exceeds fifteen millimeters.
On the other hand, the maintenance of handguns, particularly those designed for firing ogival bullets, proves to be much more delicate, on the one hand by reason not only of the fact that the internal diameter of the barrel is smaller than that in guns of the above-mentioned type, but also the fact that the inner surface of the barrel has helicoidal grooves, and on the other hand because, for purposes of effectiveness, grooved barrels are preferably cleaned by means of a fiber string of the above-mentioned type.
The operator who cleans a low-caliber gun must therefore be especially careful not to jam the functional part of the gun swab brush inside the barrel.
This jamming phenomenon occurs particularly when the operator is
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Carone Michael J.
Feeney William L.
Lattig Matthew J.
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