Firearms – Stock or barrel connectors – Hinged or pivoted barrel
Patent
1980-09-15
1982-10-19
Brown, David H.
Firearms
Stock or barrel connectors
Hinged or pivoted barrel
42 40, 411 24, 411 77, 411 61, F41C 2300, E16B 1306
Patent
active
043543227
ABSTRACT:
The frame of a hand pistol has in its forward end a pair of spaced furcations between which the lug on a removable gun barrel is pivotally mounted by means of an adjustable mounting pin, which permits the barrel to be pivoted between an open or loading position, and a closed or firing position. The adjustable pin comprises an Allen-head screw having a cylindrical head positioned snugly in a circular bore formed in one furcation, and a reduced-diameter, externally-threaded shank, which extends coaxially through a bore in the barrel lug, and which is threaded into an annular nut that is positioned snugly in a registering bore in the other furcation. One or more radially expansible sleeves surround the reduced-diameter shank of the screw of the bore of the barrel lug, and are designed so that when the nut is threaded toward the head of the screw, the sleeve or sleeves expand slightly radially, if necessary, to take up any undesirable slack which might otherwise exist as between the frame and the removable barrel, thus increasing the accuracy of the gun and minimizing its head spacing. Either a single sleeve having therein one or more longitudinally extending slots can be used; or a series of sleeves, the confronting ends of which have sliding engagement along a plane inclined to the axis of the screw, can be employed.
REFERENCES:
patent: 226893 (1880-04-01), Van Gieson
patent: 241466 (1881-05-01), Wilson
patent: 323022 (1885-07-01), Boone
patent: 822668 (1906-06-01), Jager
patent: 914103 (1909-03-01), Berry
patent: 945403 (1910-01-01), Mohun
patent: 2832167 (1958-04-01), Fox
patent: 2872227 (1959-02-01), Wachs
patent: 3009747 (1961-11-01), Pitzer
patent: 3432214 (1969-03-01), Cashman et al.
patent: 4078471 (1978-03-01), Archibald et al.
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