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.
Rolls Razor by Quistclose Investments This was a landmark case which created the concept known as a Quistclose trust. Manufacture continued with machines built by the engineering company Tallent (who built the company's dishwashers), who re-branded them as such briefly, but by 1965 the machines were marketed as Colstons before the appliance division of Tallent was taken over by the Italian firm Ariston in 1979. Rolls Razor Rolls Razor Limited was a British company known first for its manufacture of a sophisticated safety-razor and later, under new ownership, an "affordable" twin-tub washing machine. The eponymous product was a sophisticated safety-razor which promoted