Who developed stainless steel?
Stainless steel
Similar developments were taking place contemporaneously in the United States, where Christian Dantsizen and Frederick Becket were industrializing ferritic stainless steel. In 1912, Elwood Haynes applied for a US patent on a martensitic stainless steel alloy, which was not granted until 1919.
In 1912, Harry Brearley of the Brown-Firth research laboratory in Sheffield, England, while seeking a corrosion-resistant alloy for gun barrels, discovered and subsequently industrialized a martensitic stainless steel alloy. The discovery was announced two years later in a January 1915 newspaper article in "The New York Times". The metal was later marketed under the "Staybrite" brand by Firth Vickers in England and was used for the new entrance canopy for the Savoy Hotel in London in 1929. Brearley applied for a US patent during 1915 only to find that Haynes had already registered a patent. Brearley and Haynes pooled their funding and with a group of investors formed the American Stainless Steel Corporation, with headquarters in Pittsburgh, Pennsylvania.
Speed nut
The speed nut was invented in 1936 by Albert H. Tinnerman, son of George Tinnerman, who founded Tinnerman Steel Range Company. Tinnerman invented the nut to resolve issues with stove shipping. The invention was so successful it led the company away from building stoves to building fasteners.
Tinnerman Products evolved from the speed nut development with manufacturing plants in Cleveland, Ohio. A modern manufacturing plant was constructed on Brookpark Road in the mid-1950s. Tinnerman Products was later acquired by Eaton Yale & Towne (Eaton Corporation).