Quick-assembly breech plug for muzzleloader firearms

Abstract

The invention relates to a quick-assembly breech plug for muzzleloader firearms, allowing a quick assembly and disassembly and being extremely practical, simple to manufacture and having a low cost, wherein said breech plug comprises a cylindrical body (1), configured to be internally coupled in a rear end (10′) of a barrel (10), and a head (6) configured to define a limit coupling position of the breech plug inside the barrel (10), wherein the cylindrical body (1) externally comprises a male thread (2) having at least two starts located close to a front end (3) of the breech plug, opposite the head (6), according to a plane perpendicular to an axis of revolution of the cylindrical body (1), said male thread (2) being configured to screw into a female thread (10″) located internally in the rear end (10′) of the barrel (10), preferably 4 screw ridges.

Description

OBJECT OF THE INVENTION[0001]The present invention relates to a quick-assembly breech plug for muzzleloader firearms, applicable in the arms industry, and more specifically in the field of firearms for use in sports, allowing a quick and effective assembly and disassembly of the breech plug in the rear end of the barrel, being an extremely practical breech plug which is simple to manufacture and has a low cost, which allows its coupling in the barrel from any angular position.BACKGROUND OF THE INVENTION[0002]Firearms which are loaded through the muzzle of the firearm, usually known as muzzleloader firearms, incorporate at the rear end of the barrel, opposite the muzzle, a part referred to as breech plug which can be disassembled from the barrel, having the functions of closing the rear end of the barrel during its use, while at the same time it allows the ignition of the charge, likewise allowing accessing the inside of the barrel when it is disassembled for the purpose of performin...

AI Technical Summary

Benefits of technology

[0001]The present invention relates to a quick-assembly breech plug for muzzleloader firearms, applicable in the arms industry, and more specifically in the field of firearms for use in sports, allowing a quick and effective assembly and disassembly of the breech plug in the rear end of the barrel, being an extremely practical breech plug which is simple to manufacture and has a low cost, which allows its coupling in the barrel from any angular position.

Problems solved by technology

The main drawback of these breech plugs is that their manufacture is complicated and expensive, since the machining of said recessed grooves and bevel edges in the previously threaded male body of the breech plug is required, in addition to having to precisely incorporate recesses and complementary toothing inside the barrel, requiring the breech plug to be in a certain angular position before introducing it in the barrel, which delays the operations for assembling it, which furthermore require the use of suitable tools for screwing and unscrewing the breech plug.

US-2006 / 0248771-A1 relates to a muzzleloader firearm comprise a breech plug for quickly assembling the breech plug in the barrel, being based on a bayonet-type system, which incorporates teeth and grooves both in the barrel and in the breech plug configured to allow a coupling and uncoupling by means of 90° rotations, having as a drawback, in addition to those indicated above, the fact that considering the described coupling means it is extremely difficult to prevent firing gases from escaping through said clearances.

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