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 powder. In 1884 the company became the exclusive supplier of gunpowder for shotgun shells manufactured by Chamberlain Cartridge Company. Austin Powder Company built the company town of Glenwillow, Ohio in 1892, and established the Austin Cartridge Company there in 1895 manufacturing "Crack Shot", "Club Sporting", and "Champion Ducking" shotgun shells. The Union Cap and Chemical Company was formed in 1900 as a joint venture of Austin Cartridge Company and Western Cartridge Company to manufacture blasting caps, primers, and .22 and .32 caliber rimfire cartridges. The Union Cap and Chemical Company trademark was a Maltese cross and a UCC headstamp appeared