Gas-operated device for activating the reloading mechanism of a

Details Gas-operated device for activating the reloading mechanism of a Gas-operated device for activating the reloading mechanism of a

1976-08-18

1978-04-25

Bentley, Stephen C.

Ordnance

Automatic

Gas piston type

F41D 504

Patent

active

040856542

ABSTRACT:
A gas-operated device for activating the reloading mechanism of an automatic rifle comprising a cylinder housing and a movable piston, both mounted coaxially upon a cartridge store, the whole assembly being affixed below the rifle barrel. Gases from a cartridge exploded in the rifle breech are bled from the barrel through a duct into an annular chamber between the piston and a closed end of the cylinder to drive the piston and activate the reloading mechanism. Immediately prior to this bleeding, gases are bled through an additional duct into an interstice between the piston and the cylinder to act as a `gaseous diaphragm` preventing leakage of the driving gases from the annular chamber, except when the pressure of these driving gases is excessively high.

REFERENCES:
patent: 966995 (1910-08-01), Brown
patent: 2909101 (1959-10-01), Hillberg
patent: 3810412 (1974-05-01), Zamacola

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