Firearms – Breech loading – Sliding breechblock
Patent
1985-02-28
1987-03-31
Kyle, Deborah L.
Firearms
Breech loading
Sliding breechblock
42 25, F41C 1512, F41C 1102
Patent
active
046532102
ABSTRACT:
This invention relates to a firearm and more particularly to a firearm having a bolt action in which a bolt is arranged for axial and rotational movement in a receiver and an extractor system operable in combination with the movement of the bolt relative to the bolt receiver. The bolt includes lugs having a locking surface which engages a locking wall formed on a cooperating lug on the receiver when the bolt is in the firing position. Both the locking surface and locking wall are arranged at cooperating angles and are conically shaped so as to insure that the axis of the bolt and receiver will be concentric when the bolt is locked in the firing position. In the event of a cartridge rupture the angle of the locking wall causes some of the forces generated by the rupture to be diverted at an angle from the axis, thereby minimizing the shearing stresses on the receiver lugs. The extractor includes a portion arranged as part of the bolt locking surface so that the extractor is mechanically held relative to the bolt when the bolt is in the firing position.
REFERENCES:
patent: 557079 (1896-03-01), Mondragon
patent: 1124071 (1915-01-01), Stamm
patent: 1352412 (1920-10-01), Payne
patent: 2147185 (1939-02-01), Ahern
patent: 2409569 (1946-10-01), Johnson, Jr.
patent: 2717535 (1935-09-01), Taylor
patent: 2811902 (1957-11-01), Dixon
patent: 2941449 (1960-06-01), Reed
patent: 3027672 (1962-04-01), Sullivan
patent: 3253362 (1966-05-01), Gitchell
patent: 3848351 (1974-11-01), Clark
patent: 4272902 (1981-06-01), Waters
patent: 4555860 (1985-12-01), Zedrosser
Carone Michael J.
Kyle Deborah L.
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