Firearms – Revolvers
Reexamination Certificate
2001-03-23
2003-10-21
Eldred, J. Woodrow (Department: 3644)
Firearms
Revolvers
C042S065000, C042S077000, C089S029000, C089S027140
Reexamination Certificate
active
06634128
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a 0.22 caliber long rifle removable conversion system kit for black powder, ball and cap reproduction and replica revolver—recreation and gallery shooting and more particularly pertains to a system for safely and conveniently converting a black powder pistol to fire modern smaller caliber cartridges and back again.
2. Description of the Prior Art
The use of known methods and apparatuses for converting black powder pistols to fire modern ammunition of a smaller caliber is known in the prior art. More specifically, known methods and apparatuses for converting black powder pistols to fire modern ammunition of a smaller caliber previously devised and utilized for the purpose of allowing different ammunition to be used in ancient weapons are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 4,437,249 to Brown et al., Issued on Mar. 20, 1984 discloses a steel plug to convert a modern shotguns to function as a muzzle loading weapon. U.S. Pat. No. 4,882,997 to Baxter et al., Issued Nov. 28, 1989 discloses a projectile to be used in firearms training. Lastly, U.S. Pat. No. 5,755,053 to Oakley, Issued May 26, 1998 discloses a plug to be used to convert a modern shotgun to fire as a muzzle loading weapon.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe conversion system for converting a black powder, ball and cap pistol having a barrel and frame that allows for safely and conveniently allows the pistol to fire modern cartridges.
In this respect, the conversion system for converting a black powder, ball and cap pistol having a barrel and frame, to fire a modern cartridge of a smaller caliber according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of for safely and conveniently converting a black powder pistol to fire modern cartridges. If desired by the shooter, the gun to be converted quickly and easily to it's original black powder state to fire ball and black powder.
Therefore, it can be appreciated that there exists a continuing need for a new and improved conversion system for converting a black powder, ball and cap pistol having a barrel and frame, to fire a modern cartridge of a smaller caliber which can be used for safely and conveniently firing modern cartridges in a weapon of this type. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of known methods and apparatuses for converting black powder pistols to fire modern ammunition of a smaller caliber now present in the prior art, the present invention provides an improved conversion system for converting a black powder, ball and cap pistol having a barrel and frame, to fire modern ammunition of a smaller caliber. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved conversion system for converting a black powder, ball and cap pistol having a barrel and frame, to fire a modern cartridge of a smaller caliber and a method which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises a conversion system for converting a black powder, ball and cap pistol having a barrel and frame, to fire a modern cartridge of a smaller caliber. This system comprises a barrel sleeve and two barrel tubular sleeves, known as barrel sleeves, one being shorter and one being longer. The shorter barrel sleeve is between about 6 and 8 inches long and the longer barrel sleeve is between about 14 and 18 inches long. Each comprised of a hard material, such as metal and the short barrel sleeve has an inlet, an outlet, a connecting barrel, an inside diameter, an outside diameter and a central aperture which is continuous throughout the barrel sleeves between the ends. The outside diameter of the shorter barrel sleeve has a threaded outlet and connecting barrel sized to fit loosely within the barrel of a black powder pistol. The outside diameter is between about 0.36 and 0.46 of an inch. The inlet is configured in a flange-like shape. The flange has a smaller and larger component. The smaller component has a cylinder-like shape which is sized to fit snugly into the inside diameter of the inlet of the pistol barrel and has a plurality of raised dimples which are sized to fit tightly into the inlet of the barrel rifling of the pistol. The large portion of the inlet is disc shaped with the disc being perpendicular to the smaller component of the inlet and it forms a flange lip having a central aperture with an inside diameter of between about 0.17 and 0.25 of an inch consistent with the barrel inside diameter. The longer barrel sleeve is configured as the shorter barrel sleeve and is longer. The outlet of the long barrel nut is further configured with a tapered outlet end, with the outside thread being made to accommodate a ⅜-18 pipe tapered nut. There are four letting slits between about 0.50 and 1.0 inch in length from the outlet end, inward, and four letting apertures having a diameter of between about 0.10 and 0.20 of an inch which are drilled at 90 degree angles to each other about a circumferential line at the location of the inboard extreme of the letting slits. These apertures are approximately 1.0 inch from the outlet of the barrel extension. The short barrel sleeve is secured with a barrel sleeve nut which comprises an inlet, an outlet and a portion therein between. It is preferably made of hard metal, and has a uniform central aperture. One configuration of the nut can have a stepped cylindrical configuration. The inlet is round and the outside diameter is sized to fit within the inside diameter of a pistol barrel. It has a length of between about 0.5 and 1.0 inch. The inlet is female threaded on the inside diameter of its aperture and threaded to mate with the male threaded portion of the threaded outside diameter of the barrel sleeve. The outside diameter of the inlet is sized to fit snugly into the inside diameter of the outlet of the pistol barrel. The outlet portion of the barrel nut is larger, approximating the outside diameter of the pistol barrel which is between about 0.5 and 1.0 inch in diameter. The barrel nut has a knurled surface for positive grip of the larger outlet portion. The long barrel sleeve nut is locked with a locking nut is one in which the nut has a tapered internal thread in the inlet so as to allow slight compression of the barrel extension outlet by the nut as it is tightened. The nut has a round cylindrical configuration with the interior diameter of the inlet being round and tapered inwardly. The nut has a length of between about 0.5 and 1.0 inch with the inlet being female threaded and tapered on the inside diameter of the aperture to mate with the tapered threaded portion of the threaded outside diameter of the barrel sleeve. The outside diameter of the nut is larger than the outside diameter of the existing pistol barrel and has a length of between about 0.5 and 1.0 inch. There is a firing pin ring assembly, having a doughnut-like shape, comprised of a loading gate subassembly, a firing pin subassembly and a firing pin ring. The firing pin subassembly has an inboard and outboard component. The inboard component comprises a solid cylinder having an inboard and outboard portion. The inboard portion is cylindrically round with a flat striking end and the outboard portion is threaded. The overall diameter of the inboard component is between about 0.01 to 0.15 of an inch, preferably {fraction (3/32 )} of an inch a
Dutkiewicz Edward P.
Eldred J. Woodrow
LandOfFree
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