Automatic weapon firing mechanism
AssigneeThe United States of America as represented by the Secretary of the Army
InventorDoyle L. White
Life of this patent
Estimating the term…
Abstract
An automatic weapon firing mechanism consisting of a slideably movable bolt arrier with cam slots cooperating with pins on the bolt and firing pin for rotating the bolt to lock it in battery position for firing and to cock the firing pin during recoil. Continued forward movement of the carrier after the bolt is locked causes the firing pin to sear off and strike the chambered cartridge. The firing pin has its own firing spring so that a constant reliable striking force is applied to the cartridge. Gas from the spent cartridge recoils the bolt carrier, unlocking the bolt and cocking the firing pin during recoil.
Claims8
An automatic weapon firing mechanism comprising:
- a bolt carrier slideably movable between recoil and battery positions, said carrier being spring driven to battery position and returnable to recoil position by gases from a previously fired cartridge,
- a bolt movable rotatably and longitudinally on said carrier,
- said bolt having a cam pin,
- said carrier having a cam slot receiving said pin whereby relative longitudinal movement between said bolt and carrier causes rotational movement of said bolt,
- a firing pin mounted for longitudinal movement on said bolt,
- spring means urging said firing pin forwardly on said bolt,
- a firing pin sear mounted on said bolt and adapted to releasably retain said firing pin in a cocked position in opposition to said spring means,
- a firing pin cocking pin on said firing pin,
- said carrier having cam slots receiving said cocking pin whereby rearward movement of said carrier returns said firing pin to cocked position.
Dependencies are inferred from the claim text.