Accession Number : AD0163769

Title :   Cartridge Chamber Structure to Compensate for Variable Headspace.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Buchanan,James F. ; La Fever,Clifford E.

Report Date : 15 FEB 1972

Pagination or Media Count : 5

Abstract : The patent relates to an automatic gun wherein the headspace varies with the thermal elongation of the barrel during firing operation. The barrel chamber is provided with at least three control pins which are disposed parallel to the longitudinal axis of the chamber so as to act simultaneously upon the rim of the chambered cartridge to compensate by indentation of the rim for the variations in headspace and assure positive zero space between the cartridge and breechblock.

Descriptors :   (*BREECH MECHANISMS, *PATENTS), (*AUTOMATIC WEAPONS, *GUN BARRELS), INTERIOR BALLISTICS, MACHINING, CONFIGURATION, PINS

Subject Categories : Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE