Shaving razor was essentially a small piece of a straight razor attached to a handle using a clamp mechanism. Before each shave the blade had to be attached to a special holder, stropped with a leather belt, and placed back into the razor. After a time, the blade needed to be honed by a cutler. In 1895, King Camp Gillette invented the double-edged safety razor, which utilised inexpensive, disposable blades sharpened from two sides. It took him until 1901 to build a working, patentable model, and commercial production began in 1903. The razor gained popularity during World War I when the
William Samuel Henson which is at right angles with the handle, and resembles somewhat the form of a common hoe." While a major improvement on the previous form of safety razor, an additional improvement was needed to make safety razors common. In 1901, Gillette combined Henson's T-shaped safety razor with disposable blades, and produced the modern razor. Henson published a pamphlet on astronomy in 1871 suggesting that the solar system formed from cold dust and gas, and discussed how it could condense into meteors and comets, and further condense into planets, moons and the sun, in the process heating up. He also discusses