Breech-loading to muzzle-loading firearm converting device
OwnerPaul D. Chapininventor
Life of this patent
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Abstract
A conversion plug that is configured to be removably inserted into the breech of a breech-loading firearm, converting the firearm to one of a muzzle-loading type. The plug is provided with a primer-receiving chamber at one end and a series of passages that communicate the chamber to a region proximate the other end. The primer-receiving chamber is adapted to receive a percussion-type primer, detonation of which generates ignition products which are communicated via the series of passages to a main powder charge situated at the interior end of the plug to cause combustion of said charge and propel a projectile from the firearm.
Claims13
A device for installation in the breech of a breech-loading firearm to convert said firearm to one of a muzzle-loading variety, comprising:
- an elongate body member having an outer surface that is conformably shaped for mating engagement with the interior of the breech of the firearm and having a pair of opposed ends, the body member being formed with a primer-receiving chamber at one end and means for establishing communication between the primer-receiving chamber and the opposite end, the communicating means including a passageway to the primer-receiving chamber, at least a pair of generally parallel, non-axial passages to the opposing end, and an intermediate passage establishing communication between each one of the pair of non-axial passages and the axial passage.
A conversion plug for insertion into a breech of a breech-loading firearm to allow the firearm to be loaded from the muzzle of the firearm, the plug comprising:
- an elongate body member having an outer surface that is conformably shaped for mating engagement with the interior of the breech of the firearm and having opposed ends, the body member being formed with a primer-receiving chamber at one end and means for communicating the primer-receiving chamber to the interior of the breech of the firearm, the communicating means including a first passage to the primer-receiving chamber and at least a second passage communicating the first passage to the interior of the breech of the firearm, the second passage having at least a generally non-parallel component relative to the first passage.
In a firearm having a barrel that is adapted to be loaded from a breech end of the barrel, a conversion plug adapted to be removably inserted into the breech end of the barrel to convert the firearm to one of a muzzle-loading variety, the conversion plug comprising:
- a plug body having a pair of opposed ends, and an axial throughbore extending between the opposed ends, the plug body being conformably shaped for mating engagement with the interior of the breech of the firearm;
- an adjustment element fitted in the throughbore and rotatably engageable therewith for allowing axial translation of the adjustment element relative to the plug body, the adjustment element having a pair of opposed ends and at least one passage to communicate the one end of the adjustment element to the opposing end thereof, the adjustment element being relatively positioned in the plug body to locate the one end of the adjustment element interior of said throughbore and forming a primer-receiving chamber, the primer-receiving chamber having an axial dimension that is varied with axial translation of the adjustment element;
- and
- restriction means coupled to the adjustment element for communicating detonation products of a detonated primer that is inserted in the primer-receiving chamber from the primer-receiving chamber and through the adjustment element and for preventing gases caused by combustion of a powder charge to be passed through the adjustment element to the primer-receiving chamber.
Dependencies are inferred from the claim text.