Firearms – Barrels – Rifling or lining
Patent
1996-09-30
1998-06-16
Jordan, Charles T.
Firearms
Barrels
Rifling or lining
F41A 2100
Patent
active
057653038
ABSTRACT:
Rifling for the barrel of a firearm includes a first gain twist region for increasing the rotational velocity of a bullet as it travels from the breech towards the muzzle end of the barrel, and a second region in which the rifling is of a constant twist so that the bullet exits the muzzle end of the barrel at a constant rotational velocity. The bore defined in the barrel is tapered in a direction from the breech end to the muzzle end so that the diameter of the muzzle opening of the barrel is less than the diameter of the breech opening. The angle of the rifling is variable with the rate of the gain twist of the rifling. The gain twist of the rifling in the barrel is formed by a button, preferably having a sinusoidal shaped periphery, which is pulled through the barrel during the manufacturing process. The smooth periphery of the button prevents shredding of the barrel when the button is twisted at different speeds to provide the variable gain twist of the rifling in different sections of the barrel. In a further aspect of the invention, an apparatus is provided for selectively varying the rotational speed of the button to form the desired gain twist of the rifling during manufacture of the barrel.
REFERENCES:
patent: 73447 (1868-01-01), Hotchkiss
patent: 128446 (1872-06-01), Winchester
patent: 300515 (1884-06-01), Schneider
patent: 460102 (1891-09-01), Carver
patent: 592437 (1897-10-01), Oberhammer
patent: 1355422 (1920-10-01), Pedersen
patent: 3525172 (1970-08-01), Marshall et al.
patent: 3562945 (1971-02-01), Mikola
patent: 4308681 (1982-01-01), Gorman
patent: 4924614 (1990-05-01), Hoffmann et al.
patent: 5077926 (1992-01-01), Krumm
Barker Donald
Rudkin, Jr. Henry A.
Jordan Charles T.
Stone Mark P.
Wesson Theresa M.
LandOfFree
Barrels for firearms and methods for manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Barrels for firearms and methods for manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Barrels for firearms and methods for manufacturing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1713778