Razor be used on both sides, with two open edges. The blade on the double-edged safety razor is slightly curved to allow for a smoother and cleaner shave. In 1901, the American inventor King Camp Gillette, with the assistance of William Nickerson, patented a new variation of safety razor with disposable blades. Gillette realized that a profit could be made by selling an inexpensive razor with disposable blades. This has been called the razor and blades business model, and has become a very common practice for a wide variety of products. Many other brands of safety razors have come and gone.
Austin Cartridge Company on the rimfire cartridges. These were the first .22 rimfire cartridges manufactured by Western Cartridge Company. Austin Cartridge Company was sold to Western Cartridge Company in 1907 as Austin Powder Company reorganized to focus on production of blasting explosives. Western Cartridge Company used the Maltese cross trade mark until replacing it with a diamond trade mark during World War I. Austin Cartridge Company Austin Cartridge Company was an Austin Powder Company subsidiary manufacturing cartridge ammunition for small arms. The company made shotgun shells and rimfire cartridges from 1895 until purchased by Western Cartridge Company in 1907. Austin Powder Company was