Firearms – Muzzle loaders
Reexamination Certificate
2000-06-07
2002-05-14
Jordan, Charles T. (Department: 3641)
Firearms
Muzzle loaders
C102S444000
Reexamination Certificate
active
06385887
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
REFERENCE TO A “MICROFICHE APPENDIX”
Not Applicable
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates to a muzzle loading firearm and in particular, an adaptor for mounting in the barrel of a firearm for allowing a cartridge firing action to be used with a muzzle loading firearm. The adaptor has a nipple with a conical shaped end which extends into the flash hole of the ignition cartridge and forms a sealing connection between the center bore of the nipple and the flash hole of the ignition cartridge which prevent fire and residue from escaping the flash hole and center bore.
(2) Description of the Related Art
My U.S. Pat. No. 5,706,598 describes a muzzle loading firearm having an insert (breech plug) and adaptor for use with a cartridge casing having a primer. The insert is threadably mounted in the center bore of the barrel adjacent the receiver. The nipple is threadably mounted in the center bore of the insert. However in my previous invention, the end of the nipple over which the cartridge casing is mounted is flat. Thus, the end of the nipple does not extend into the flash hole in the cartridge casing. Further, the flash hole of the cartridge casing opposite the primer is not sized to accommodate the end of the nipple. Thus, with my previous invention, the cartridge casing is not held in sealing contact with the nipple when the firearm is fired.
Other related art has shown various different inserts, adaptors and convertors which are used to convert a cartridge firing firearm into a black powder muzzle loading firearm. Illustrative are U.S. Pat. No. 4,437,249 to Brown et al and U.S. Pat. No. 4,222,191 to Lee et al. In Brown et al, the primer is mounted in the rear portion of the convertor. In Lee et al the powder is ignited by means of a percussion cap located on a nipple. Also of interest is U.S. Pat. No. 3,780,464 to Anderson which shows a firing mechanism for percussion lock firearms which allows the use of metallic cartridge primers.
Further, U.S. Pat. No. 5,408,776 to Mahn et al describes an improved ignition means for a muzzle loading firearm. In this invention, the ignition means is adapted to use a standard shotgun shell primer as the ignition source. However, the primer is mounted in a primer receiving well at one (1) end of the breech plug.
In addition, U.S. Pat. No. 5,623,779 and U.S. Pat. No. 5,737,863 both to Rainey, III describe a muzzle loading firearm utilizing an ignition device carrier. The ignition device carrier has a cylindrical housing with a centrally located opening recess in its aft end to receive the percussion excited ignition device such as a primer or percussion cap. The ignition device carrier has a counter bore to allow the carrier to be mounted on the aft end of the breech plug. However, the end of the breech plug does not have a conical shape. In addition, the end of the breech plug does not extend into the flash hole of the ignition device carrier.
Also, of interest are U.S. Pat. No. 4,715,139 to Rodney, Jr.; U.S. Pat. No. 5,010,677 to Verney Carron and U.S. Pat. No. 5,467,551 to Kruse which show breech plug assemblies for muzzle loading firearms. Also, U.S. Pat. Nos. 4,700,499 and 5,133,143 both to Knight describe breech plugs for muzzle loading firearms. However, the nipples are adapted to receive a firing cap and percussion cap, respectively.
Only of minimal interest is Knight 1996 Catalog, page 11 showing the Posi-Fire Ignition System.
There remains the need for an adaptor which enables a cartridge firing action to be easily used for a muzzle loading firearm while providing sealed communication between the flash hole and the center bore of the nipple in the adaptor.
SUMMARY OF THE INVENTION
The present invention relates to an adaptor having a breech plug and a nipple which enables a cartridge firing action to be used in the muzzle loading firearm. The breech plug is mounted in the center bore of the barrel adjacent the breech end of the barrel. The nipple is mounted in the center bore of the breech plug. The breech end of the nipple has a conical shape. The ignition cartridge having the primer is mounted over the nipple. The ignition cartridge is preferably similar to a standard rifle ignition cartridge without the bullet or powder. The breech end of the nipple extends into the flash hole of the ignition cartridge adjacent the primer. When the bolt or other blocking mechanism is moved into firing position, the ignition cartridge is moved securely onto the nipple. In the instant the firearm is fired, contact of the firing pin with the primer moves the ignition cartridge into sealed contact with the nipple which prevents the ignition fire and ignition gases from escaping between the flash hole and the center bore of the nipple. In addition, since the center bore of the nipple is in sealed communication with the flash hole of the ignition cartridge, the ignition flash of the primer immediately travels through the center bore of the nipple and the center bore of the breech plug to the propellant pellets or black powder located in the center bore of the barrel.
Further, in accordance with the invention, the flash hole of the ignition cartridge opposite the primer can be chamfered by a chamfering tool such that the breech end of the nipple can extend into the flash hole to be located adjacent the primer.
The substance and advantages of the present invention will become increasingly apparent by reference to the following drawings and the description.
The present invention relates to an adaptor for use in a muzzle loading firearm, having a receiver mounting a barrel and a blocking means movably mounted on the receiver for supporting a head of a cartridge during firing of the firearm, the blocking means mounting a firing pin mechanism, the adaptor comprising: a plug having a first end and a second end with a sidewall extending therebetween and with a center bore extending therethrough along a longitudinal axis of the plug, the plug being configured to be inserted into the barrel in a sealed relationship to the barrel with the first end adjacent the blocking means; and a nipple mounted in the center bore of the plug and having a first end and a second end with a sidewall extending therebetween and with a center bore extending therethrough in communication with the center bore of the plug, the sidewall at the first end having an angled outer surface wherein the sidewall of the nipple is spaced apart from the sidewall of the plug such that a casing of the cartridge with a primer on a head of the casing can be mounted on the nipple, the head of the casing having an opening adjacent the primer on a side adjacent the nipple, wherein the casing extends into the center bore of the plug adjacent the sidewall of the plug such that the first end of the nipple extends into the opening of the casing adjacent the primer and such that when the blocking means engages the head of the casing of the cartridge with the firing pin mechanism adjacent the primer and moves the first end of the nipple into the opening of the casing such that the center bore of the nipple is in direct communication with the primer wherein during firing of the muzzle loading firearm, the firing pin mechanism engages the primer and produces ignition of propellant material in the barrel through the center bore of the plug and the center bore of the nipple.
Further, the present invention relates to an ignition system for use in a muzzle loading firearm having a receiver and a barrel with a blocking means slidably mounted on the receiver and mounting a firing pin mechanism, the ignition system comprising: a plug having a first end and a second end with a sidewall extending therebetween and with a center bore extending therethrough along a longitudinal axis of the plug, the plug being configured to be inserted into the barrel in a sealed relationship to the barrel with the first end adjacent the blocking means; a nipple mount
Jordan Charles T.
McLeod Ian C.
Moyne Mary M.
Thomson M.
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