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.
Medusa Model 47 (multi caliber revolver)
The company that created the Medusa M47 is Phillips & Rodgers Inc., designed principally by Jonathan W. Philips Jr and Roger A. Hunziker, who produced a relatively small numbers of the hand gun in the late 1990s. Jonathan W. Phillips was a gunsmith and he also worked as a computer scientist for NASA. He was mainly responsible for the designing of the cylinder, extractor and ejector mechanism as well as the system that is used for positioning the cartridges. He applied for two patents on February 3, 1993 for the “Ejector and cartridge positioner for revolvers” and the "Ejector and cartridge positioner". He later filed for a patent that was called "Bore for weapons" on February 27, 1996 that online the rifling that the Medusa was going to use. Roger A. Hunziker designed the firing pin mechanism for the Medusa. He filed for a patent on August 1, 1995 for the "Firing pin mechanism". Phillips & Rodgers Inc. not only produced the Medusa M47 revolver but they also made several conversion cylinders for revolvers made by Smith and Wesson, Colt, and Ruger. Very few of the these revolvers were actually produced.