Accession Number : ADD007678
Title : Attachment of Rotating Band to Shell Casing by Brazing.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC
Personal Author(s) : Rizzitano,Fortunato J ; Hatch,William P ; Buffum,Donald C
Report Date : 01 Oct 1974
Pagination or Media Count : 4
Abstract : This invention relates to improved means of attaching rotating bands to artillery shells, and more particularly by brazing the band to the shell casing. A rotating band is a cylindrical ring of copper or gilding metal positioned around the exterior surface of a projectile. It affords a snug seat for the projectile in the forcing cone and centers the base in the bore. As the projectile moves forward, the soft rotating band is engraved by the bands of the bore. Because of the compression of the band, excess metal flows toward the rear. This flow of metal is taken by up cannelures, or grooves, cut in the rotating band. Since the riflings of the weapon has a helical twist, rotating is imparted to the moving projectile by the engraved rotating band. In addition, the rotating band prevents the escape of the propellant gases forward of the projectile by completely filling the grooves of the rifling.
Descriptors : *Patents, *Foreign, *Ammunition cases, *Brazing, *Rotating bands, Manufacturing, Artillery ammunition, Projectiles, Cartridge cases, Rings, Inventions, Metals, Copper alloys, Cylindrical bodies
Subject Categories : Couplers, Fasteners, and Joints
Ammunition and Explosives
Distribution Statement : APPROVED FOR PUBLIC RELEASE