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 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 founded in 1833 by brothers Daniel, Alvin, Lorenzo, Henry, and Linus Austin of Wilmington, Vermont. After exploring the market for gunpowder on the western frontier, they built and operated a gunpowder mill at Old Forge on the Cuyahoga River near Akron, Ohio. Early production was largely used as blasting powder for coal mining but some was sold as sporting rifle