US Government As Represented by the Secretary of the Army

Leslie C Blahut

Edward William Holmes

Wayland P Barber

Paul J Koelbel

A breech assembly for a weapon may include a breech ring and a carrier fixed to a shaft. The shaft may be rotatably mounted to the breech ring. A breech block may be fixed to the carrier and insertable into and out of an opening in the breech ring by rotating the shaft. A notch may be formed in an end of the shaft. A lock may be translatably disposed in the breech ring and translatable into and out of the notch in the end of the shaft. Translation of the lock into the notch may rotatably lock the shaft with respect to the breech ring.

Positional lock for carrier assembly of breech-loaded weapon

A breech-loaded weapon may include a carrier at its breech end. The carrier may include a breech block support. A screw block may be rotatable on the breech block support of the carrier. The carrier may include a supporting protuberance and the screw block may include a supporting projection having an undercut portion. A spring-loaded plunger may be disposed on the carrier and a plunger recess may be defined in the screw block. In a retained position of the screw block, the undercut portion of the supporting projection may engage the supporting protuberance of the carrier and the spring-loaded plunger may engage the plunger recess.

Apparatus and method for retaining screw breech block

The breech end of a gun may include a quick-release spindle assembly. A carrier may have a locking collar rotatably disposed therein. The locking collar may have a through-bore and one or more projections extending into the through-bore. The locking collar may be rotatable between spindle lock and spindle release positions. A spindle may be translatably disposed in the through-bore of the locking collar. The spindle may include one or more projections extending radially outward from a rear outer surface of the spindle. In the spindle lock position of the locking collar, the projections of the spindle may be aligned with the projections of the locking collar to thereby prevent translation of the spindle in a forward direction. In the spindle release position of the locking collar, the projections of the spindle may not be aligned with the projections of the locking collar to thereby allow translation of the spindle in a forward direction.

Growing community of inventors

Westfield, MA, United States of America

Leslie C Blahut