Sealing system for a sliding wedge type breech block of a barrel

Details Sealing system for a sliding wedge type breech block of a barrel Sealing system for a sliding wedge type breech block of a barrel

1979-06-19

1981-04-28

Bentley, Stephen C.

Ordnance

Breech closures

Gas checks

89 27R, 89 28A, F41D 1116

Patent

active

042638364

ABSTRACT:
Sealing system for a sliding wedge type breech block of a barrel weapon, particularly one which employs cartridge free ammunition. An actuating member having a rear end adapted to be driven is disposed in the breech block, and an axially movable pressure bolt having an impacting surface is engaged and driven by the actuating member. A sealing means including a sealing member is provided between the actuating member and the breech block for separating the pressure bolt area from the actuating member. The sealing member is generally of disc shape, having a circular cylinder flange attached to its rim and a central support hub with an end surface functioning as a stop for the impacting surface of the pressure bolt. The circular cylindrical flange of the sealing member is disposed against the inside of a circular cylindrical recess in the forward end of the breech block, and the disc has an outer annular end surface for pressing against a transverse sealing surface at the rear end of the barrel. A mechanical guide means is provided between the actuating means and the pressure bolt, such guide means transforming rotary motion of the actuating means into an axial linear motion of the pressure bolt. An ignition or firing pin is attached to the forward end of the pressure bolt.

REFERENCES:
patent: 827725 (1906-08-01), Hammar
patent: 2117885 (1938-05-01), Hasek

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