Cartridge case ejectors in automatic guns

Details Cartridge case ejectors in automatic guns Cartridge case ejectors in automatic guns

1987-06-30

1988-10-18

Bentley, Stephen C.

Ordnance

Breech closures

Transverse

42 25, F41F 1102

Patent

active

047778628

ABSTRACT:
The disclosure relates to an automatic gun which employs case ejectors (1, 1') for realizing extraction and ejection of the cartridge case from a spent round. The case ejector is also utilized for arresting the breech block during the recoil of the weapon and holding the breech block in an open position so that ramming home of a new round (3') may be executed. The ejector is exposed to the round in process of being rammed home, which round, during its thrust towards the homed position in the barrel, entrains the ejector so that the breech block (2) is released and may execute its closing movement int. al. with the assistance of spring means placed under tension during the opening movement of the breech block. The ejector and the breech block are designed with cooperating arrest and abutment surfaces which take up portions of the kinetic energy of the round which is in the process of being rammed. A separate buffer device (5) is also connected to the ejector, by means of which device the above-mentioned retardation/cushioning may be amplified. By such an arrangement, the feeding and ramming speed of the gun may be increased without the risk that each respective round jolt against the rear face of the barrel and derange the breech block in its closing cycle. Such a derangement would occasion cease-fire.

REFERENCES:
patent: 633949 (1899-09-01), Bleha
patent: 1310879 (1919-07-01), Schneider
patent: 2366840 (1945-01-01), Dobremysl
patent: 2410116 (1946-10-01), Vickers
patent: 2779242 (1957-01-01), Willhauck
patent: 3120071 (1964-02-01), Pernini
patent: 3733729 (1973-05-01), Baker
patent: 4040196 (1977-08-01), Smith et al.

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