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The Dardick tround, or simply tround (triangular round), is a unique firearms cartridge developed by inventor David Dardick for use in his open-chamber firearms. Named for its convex triangular shape, the tround allowed the firearm's chamber to be open on one side, removing the requirement for reciprocating motion when … 더 보기
Dardick (an associate of Melvin M. Johnson) began development of his open-chamber gun in the late 1940s. Dardick's patent 2,847,784, issued … 더 보기
Dardick's patent 2,865,126, issued in late 1958, is for a new and improved cartridge for the open-chamber gun. Unlike the previous open-chamber … 더 보기
• "Dardick Model 1500". Security Arms.
• Williams, Anthony G. (November 8, 2005). "Split Breech Guns: The Nutcracker And The 40mm Mk 18". nildram.co.uk. Archived from the original on June 14, 2007. 더 보기
During the 1950s U.S. military experiments with feeding devices for machine guns found that triangular cartridge cases would stack into 50 … 더 보기