page_title: Colt's Manufacturing Company
section_title: 1865–1880s: Post–Civil War
hierarchical_section_title: Colt's Manufacturing Company / History / 19th century / 1865–1880s: Post–Civil War
caption_attribution_description: English: Second generation Colt Single Action Army
context_page_description: Colt's Manufacturing Company, LLC is an American firearms manufacturer, founded in 1855 by Samuel Colt. It is the successor corporation to Colt's earlier firearms-making efforts, which started in 1836. Colt is known for the engineering, production, and marketing of firearms, most especially between the 1850s and World War I, when it was a dominating force in its industry and a seminal influence on manufacturing technology. Colt's earliest designs played a major role in the popularization of the revolver and the shift away from earlier single-shot pistols. Although Samuel Colt did not invent the revolver concept, his designs resulted in the first very successful ones.
  The most famous Colt products include the Colt Walker, made in 1847 in the facilities of Eli Whitney Jr., the Colt Single Action Army or Peacemaker, the Colt Python, and the Colt M1911 pistol, which is currently the longest-standing military and law enforcement service handgun in the world and is still used today. Though they did not develop it, for a long time Colt was also primarily responsible for all AR-15 and M16 rifle production, as well as many derivatives of those firearms.
context_section_description: Colt's first effort toward a metallic cartridge revolver was by conversion of existing percussion revolvers. The first of these conversions was patented on September 15, 1868 by Colt engineer, F. Alexander Thuer as patent number 82258. The Thuer conversion was made by milling off the rear of the receiver and replacing it with a breechplate containing six internal firing pins. The cartridges were loaded through the mouths of the chambers. Colt made 5000 of these but they were not well accepted. Colt found the mechanism so complex it included a spare percussion cylinder with each revolver.
  Colt tasked its superintendent of engineering, Charles Richards, to come up with a solution. The Richards conversion was performed on the Colt 1860 Army revolver. The caliber was .44 Colt and the loading lever was replaced by an ejector rod. This conversion added a breechplate with a firing pin and a rear sight mounted on the breechplate. Cartridges were loaded into the cylinder one at a time via a loading gate. Colt manufactured 9000 of these revolvers between 1873 and 1878. In 1873, Colt performed the same conversion on the M1851 and M1861 revolvers for the US Navy in .38 rimfire.  Another of Colt's engineers, William Mason, improved this conversion by placing the rear sight on the hammer and, along with Richards, he was granted patents in 1871 to convert percussion revolvers into rear-loading metallic-cartridge revolvers. Those converted revolvers are identified as the "Richards-Mason conversion". There were approximately 2100 Richards-Mason M1860 Army conversions made from 1877 to 1878 in a serial-number range 5800 to 7900.
  In November 1865, Franklin had attempted to purchase a license to the Rollin White patent from competitor Smith & Wesson. White and Smith & Wesson would take no less than $1.1 million, but Franklin and Colt's directors decided it was too large an investment on a patent that would expire in 1868. In the meantime, Colt turned its attention to manufacturing goods other than firearms, such as watches, sewing machines, typewriters and bicycles. In 1868 Rollin White requested an extension to his patent, but the request was rejected. He then turned to the Congress, but the request was again rejected, this time by the Senate and on the initiative of President Ulysses Grant, in January 1870. This led the patent to expire, allowing competitors to develop their own breech-loading guns and metallic cartridges. Following this, on that same year of 1870, Colt's bought the National Arms Company, a Brooklyn, New York company known for manufacturing derringers and for circumventing the Rollin White patent by utilizing a unique cartridge. Colt continued to produce the .41 Short derringer after the acquisition, as an effort to help break into the metallic-cartridge gun market, but also introduced its own three Colt Derringer Models, all of them also chambered in a .41 rimfire unique cartridge. The last model to be in production, the third Colt Derringer, was not dropped until 1912. The first metallic cartridge breech-loading weapons sold by Colt's were those Derringers, in 1870, that were formerly conceived by the National Arms Company, but Colt's also started developing its own rear-loading guns and cartridges.
  In 1871, Colt's introduced its first revolver models using rear-loaded metallic cartridges: the .41 caliber Colt House Revolver (also known as the Cloverleaf for its four-round cylinder configuration) and the .22 cal Colt Open Top Pocket Model Revolver. However, Colt's wanted a more powerful practical handgun loaded with metallic cartridges so the company put forward William Mason, who in 1871 began work on Colt's first .44 caliber metallic-cartridge revolver: the Colt Model 1871-72 Open Top. The company registered two patents for the Open Top, one in 1871, the other in 1872, the same patents mentioned in the markings of Colt Single Action Army revolvers, a nowadays legendary and long produced model, improved and based on the Open Top. Production of the Open Top started in 1872 and stopped in 1873 when the Single Action Army
caption: 2nd Generation Colt Single Action Army
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