Ordnance – Automatic – Movable barrel
Patent
1997-01-27
1998-09-15
Johnson, Stephen M.
Ordnance
Automatic
Movable barrel
89128, F41A 504
Patent
active
058082298
ABSTRACT:
An improved non-tilt barrel for converting a conventional semi-automatic weapon from having a pivoting linkage between the barrel and the receiver to a weapon having a cam in order to reduce the recoil of the weapon and to increase the accuracy of the weapon. Further, the non-tilt barrel is provided for increasing the distance of travel of the barrel during recoil to, in turn, increase the time of lockup between the barrel and the slide during the firing of a cartridge. As a result of the modifications resulting in the non-tilt barrel, internal pressures are reduced during the unlocking of the barrel and slide, thereby accomplishing a longer life for each component, and especially the recoil buffer pad. The position of the slide stop on a conventional firearm is moved slightly up and toward the rear of the gun. The length of the slide stop lever is varied accordingly such that engagement with the slide stop plunger is maintained in conventional fashion. The slide is also modified to define the breech at a more forward position. The barrel is modified by removing the barrel link mounting bracket, the barrel link, and the barrel link pin. The receiver is also shortened in similar fashion to accommodate the longer barrel travel. The feed ramp of the conventional firearm is removed, thereby defining a smooth barrel bed. An encircling cam is mounted in place of the barrel link assembly and defines a first leg having a length to allow the barrel to recoil as a bullet is fired, with the direction of recoil being substantially in the opposite direction of the travel of the bullet.
REFERENCES:
patent: 1355423 (1920-10-01), Pederson
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patent: 4127056 (1978-11-01), Kart
patent: 4176584 (1979-12-01), Thomas, Jr.
patent: 4201113 (1980-05-01), Seecamp
patent: 4358987 (1982-11-01), Wilhelm
patent: 4580484 (1986-04-01), Moore
patent: 4854217 (1989-08-01), Ransom
patent: 5325617 (1994-07-01), Vojta et al.
Asbury Edward
Bastian Englebert
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