Ordnance – Automatic – Breech block lock
Patent
1996-10-30
1999-05-04
Johnson, Stephen M.
Ordnance
Automatic
Breech block lock
8918702, F41A 346
Patent
active
059005769
ABSTRACT:
A semi-rigid locking system for a firearm is described. The locking mechanism has a breech block which is locked with the stock and which can be released by a spring-biased control member. The breech block has at least one bore which receives a locking element supported for radial movement in the bore. When the breech block is in the locked position, the locking element is supported by the control member and engages the stationary locking surface. When the breech block is in the release position, the locking element is released by the control member which moves in the breech block parallel to the breech block. The locking element does then also no longer engage the locking surface and can move freely. The control member has control surfaces which are inclined at different angles with respect to its axis, while the locking element has control surfaces which are complementary to the control surfaces of the control member. When the breech block is in the locked position, a clearance is provided between the locking surface and the locking element on the side facing away from the barrel.
REFERENCES:
patent: 2089671 (1937-08-01), Stecke
patent: 2626474 (1953-01-01), Lochhead
patent: 2890626 (1959-06-01), Amsler
patent: 2900877 (1959-08-01), McClenahan
patent: 2921502 (1960-01-01), Amsler
patent: 3199407 (1965-08-01), Henisa
Feiereisen Henry M.
Johnson Stephen M.
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