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These were followed by multiple-blade cartridges and disposable razors. For each type of replaceable blade, there is generally a disposable razor. In the 1930s, electric razors became available. These can rival the cost of a good straight razor, although the whole straight-razor shaving kit can exceed the cost of even an expensive electric razor.
Only certain sites on the blade acted as diodes, so the soldier moved the pencil lead around on the surface until the radio station was heard in the earphones. Another detector design was a battery carbon resting across the edges of two vertical razor blades, based on the 1879 "microphone" detector of David Edward Hughes. [2] [7]
Patent drawing of the razor. King Camp Gillette (January 5, 1855 – July 9, 1932) was an American businessman who invented a bestselling safety razor. [1] Gillette's innovation was the thin, inexpensive, disposable blade of stamped steel. [2]
A straight razor is a razor with a blade that can fold into its handle. [1] [2] They are also called open razors and cut-throat razors. [3] [4] [5] The predecessors of the modern straight razors include bronze razors, with cutting edges and fixed handles, produced by craftsmen from Ancient Egypt during the New Kingdom (1569 — 1081 BC). Solid ...
A macuahuitl ([maːˈkʷawit͡ɬ]) is a weapon, a wooden sword with several embedded obsidian blades. The name is derived from the Nahuatl language and means "hand-wood". [2] Its sides are embedded with prismatic blades traditionally made from obsidian, which is capable of producing an edge sharper than high quality steel razor blades. The ...
A Gem Micromatic single-edge razor and a packet of blades. The first safety razors used a single-edge blade that was essentially a 4 cm (1.6 in) long segment of a straight razor. A flat blade that could be used alternately with this "wedge" was first illustrated in a patent issued in 1878, serving as a close prototype for the single-edge blade ...
Wilkinson Sword Hydro 5: A 5-blade razor system with "skin guards advanced hydrating gel and a flip trimmer". Wilkinson Sword Hydro 3: A 3-blade razor system similar to the 5-blade system but all for a flip trimmer. Wilkinson Sword Hydro Silk: A 5-blade women's razor system. Introduced in mid-2012 as a Schick model; added to the Wilkinson Sword ...
Gillette's original razor patent was due to expire in November 1921 and to stay ahead of an upcoming competition, the company introduced the New Improved Gillette Safety Razor in spring 1921 and switched to the razor and blades pricing structure the company is known for today. While the New Improved razor was sold for $5 (equivalent to $88 in ...
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