HAMILTON PARTS-- Parts for the Model 27, 50, 51 and others. In 1882, Clarence Hamilton partnered with a friend to create an all-metal air rifle under the company called Plymouth Air Rifle. Clarence later sold his part of the company to start his own company called Hamilton Rifle Company. When Clarence passed away, his son Coello took over the business. The most well known Hamilton rifle was the “Model 27,” which was made from 1907-1930.
he Model 27 was introduced in 1907 and production ceased in 1930. It combined major innovations for which the Hamilton Company held patents. The first was the method of making the barrel: by pressure-forming a sheet of metal into a short, thick tube, and then rolling it around a mandrel engraved with a reverse pattern of the rifling. This process was covered under Patent Number 660,725 of October 30, 1900. The Hamilton method was fast and well suited to mass production: more importantly, it was far less expensive than the conventional methods of “quality” gunmakers. Despite its speed and low cost, it was perfectly acceptable for low-powered .22 rimfire ammunition.
