Volley gun
Two notable artillery-sized volley guns were developed in the mid-19th century, although neither was particularly successful in practice. Developed in the 1860s and based on an 1850s design by a captain Fafschamps, the French mitrailleuse is an example of a multi-barreled volley gun that could fire all of its barrels simultaneously or sequentially over a short period of time. Also developed in the 1860s, General Origen Vandenburgh of the New York State Militia designed a weapon that had eighty five parallel .50 caliber rifle barrels. After failing to sell the weapon to the United Kingdom, he reportedly sold a small number to the Confederate States of America, although there is no record that they were actually used. One Vandenburgh gun was located at Fort Fisher, North Carolina, and another reportedly at Salisbury, NC.
Smith &amp; Wesson Model No. 2 Army
Horace Smith and Daniel B. Wesson founded the Smith & Wesson Company in Norwich, Connecticut, to develop Volcanic Firearms, in 1855 the Company was renamed Volcanic Repeating Arms and was sold to Oliver Winchester. As Samuel Colt's patent on the revolver was set to expire in 1856, Wesson began developing a prototype for a cartridge revolver with a "Bored-through" cylinder. A former employee of the Colt's Manufacturing Company named Rollin White, who held the patent for the "Bored-through" cylinder, was contacted, and Smith & Wesson proposed to pay him a royalty of $0.25 on every revolver that they made. The deal allowed Smith & Wesson to develop and produce the first cartridge revolver, the Smith & Wesson Model 1 in caliber .22 rimfire.