Obturator ring for a cannon

Details Obturator ring for a cannon Obturator ring for a cannon

1985-01-30

1987-12-01

Schmidt, Frederick R.

Ordnance

Breech closures

Gas checks

277227, 277235R, F41F 1102

Patent

active

047096160

ABSTRACT:
An obturator ring for location between a sliding wedge-type breech block and a base ring in the barrel of a cannon to provide a seal and allow satisfactory closing movement of the obturator ring. The ring comprises an angle section with a radial flank having a disc lining on the external side facing the breech, the flank which is parallel to the axis of the bore of the barrel having on the external side a cylindrical lining. The linings are deformable, incompressible and capable of being forced over their widths against the base ring or the wedge insert by the flanks which deform under gas pressure. The linings are interconnected in the corner cross section of the obturator ring via a number of connecting rod-like members disposed in bores through the obturator ring; the flanks are joined through a rounded corner portion which allows flexure to effect through the tips of the flanks. The linings provide a large sealing surface of which the minimum width is greater than one-half of the length.

REFERENCES:
patent: 212197 (1879-02-01), Crispin
patent: 1460683 (1923-07-01), Schneider
patent: 2301097 (1942-11-01), Tweedale
patent: 3403596 (1968-10-01), Bartels
patent: 3567258 (1969-03-01), Scaramucci
patent: 3707900 (1973-01-01), Hornteck et al.
patent: 4566368 (1986-01-01), Bartolles

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