Firearms – Revolvers
Patent
1979-10-22
1982-02-23
Jordan, Charles T.
Firearms
Revolvers
42 75B, 42 77, F41C 100
Patent
active
043163394
ABSTRACT:
A replaceable barrel which screws into a threaded aperture in the frame of a handgun in the form of a single action revolver is properly positioned with respect to the front sight thereon and rigidly secured to the frame by an arrangement which utilizes the base pin for the cylinder and which includes a lug formed on the outside of the barrel adjacent the frame. The cylinder base pin couples to the lug to provide the barrel with the proper angular position relative to the frame and to index the lug and included barrel relative to the frame to compensate for any play therebetween. In a first arrangement for securing the cylinder base pin to the lug a set screw having a threaded exterior is screwed into a threaded aperture in the lug so as to force a conical shaped end thereof within an aperture for the base pin in the frame while at the same time receiving a necked-down front end of the cylinder base pin within a hollow interior thereof. In a second embodiment, the cylinder base pin which is threaded at its outer end so as to screw into a threaded aperture for the pin in the frame terminates in a cylindrical element of larger diameter which seats against an annular flange within an aperture in the lug. The replaceable barrels which may be of different caliber extend into the cylinder window in the frame by varying distances which index with the varying caliber cylinders of different lengths to prevent use of a cylinder of given caliber with a replacement barrel of smaller caliber.
REFERENCES:
patent: 1227668 (1917-05-01), Reising
patent: 2329273 (1943-09-01), Kelly
patent: 2976638 (1961-03-01), Owens
patent: 3280495 (1966-10-01), Lewis
patent: 4109403 (1978-08-01), Badali
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