Ordnance – Cartridge feeding – Belts
Patent
1979-06-11
1980-09-23
Bentley, Stephen C.
Ordnance
Cartridge feeding
Belts
F42B 3908
Patent
active
042235901
ABSTRACT:
A belt-fed, gas-operated automatic weapon of a type in which the gas pressure developed in the barrel bore during firing is ported just forward of the barrel chamber to be 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, including ammunication feeding and ejection, bolt locking and unlocking, and reciprocation. Dual power cylinders with symmetrically arranged pistons operated by the gas pressure compress all of the springs in the opposing spring sets by engagement with a sliding carriage. The forces exerted on the bolt locking mechanism by the spring sets are greatly reduced during the interval in which the locking mechanism is operated to reduce wear on the mating surfaces and to properly sequence the unlocking after discharging a round. Manual actuation of the weapon is also enabled with an automatic latching of the bolt in the retracted position upon manual actuation and also upon full depression of a selector lever and release of the trigger during automatic fire such that the bolt remains in the retracted position upon cessation of fire to allow cooling of the breech and/or feeding of a fresh ammunition belt. A particular interlinked ammunition belt is disclosed to advance rounds carried by the belt through the weapon as well as an arrangement for separating each link from the belt after passing through the weapon.
REFERENCES:
patent: 3650176 (1972-03-01), Linder
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