Gas operated automatic weapon

Details Gas operated automatic weapon Gas operated automatic weapon

1979-03-15

1981-06-02

Bentley, Stephen C.

Ordnance

Automatic

Gas piston type

89 33C, F41D 504

Patent

active

042704375

ABSTRACT:
A belt-fed, gas operated automatic weapon of a type in which the gas pressure developed in the bore is ported just forward of the chamber and utilized to compress a system of opposing spring sets which in turn operate the various mechanisms involved in the automatic or semi-automatic functioning of the weapon. Symmetrically arranged dual power cylinders operated by the gas pressure compress all of the springs in the opposing spring sets by engagement with a sliding carriage. Bolt locking is carried out by a separate oscillating cam-operated bolt latch element cooperating with a shoulder recess formed in the periphery of the bolt, with an arrangement for reducing the bolt locking mechanism forces during the unlocking interval. Manual actuation is enabled by movement of a slider. The bolt is automatically latched open in some modes of operation. A particular interlinked ammunition belt construction is disclosed to separate each link from the belt after passing beyond the bolt.

REFERENCES:
patent: 3853035 (1974-12-01), Donovan

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