Montigny mitrailleuse
The Montigny mitrailleuse was an early type of crank-operated machine-gun developed by the Belgian gun works of Joseph Montigny between 1859 and 1870. It was an improved version of the "Mitrailleuse", () invented by Belgian Captain Fafschamps in 1851 which was a fixed 50-barrelled volley gun.
John Pedersen (arms designer)
Many of Pedersen's U.S. military efforts were stymied by fate. Although the Navy recommended adoption of his .45 pistol design, the outbreak of World War I led to the design being shelved in favor of the M1911 pistol already in production for the Army. His most famous invention, the Pedersen Device, never had a chance to significantly affect the battles on the Western Front during World War I: the war ended before it could be manufactured in quantity and sent to France to equip the American Army (only 65,000 were produced out of planned production of 500,000). In the 1920s U.S. Army Ordnance selected his .276 Pedersen cartridge to replace the .30-06 in the infantry rifle and tested Pedersen's unique toggle-linked semi-automatic rifle in competitions at Aberdeen Proving Ground. The Pedersen rifle lost out to the rifle designed by John C. Garand. General MacArthur later vetoed the adoption of .276 Pedersen as the new infantry cartridge. General George S. Patton owned a Remington Model 51 and was thought to favor the weapon and is seen in many photos of the era wearing it as his personal sidearm. During World War II, John Pedersen's attempts through the Irwin-Pedersen Arms Company to mass-produce M1 Carbines for the U.S. military failed.