william kelly patented a method to mass-produce steel in america.
william kelly patented a method to mass-produce steel in america.
who patented a method to mass-produce steel in america?
william kelly
sir henry bessemer described the origin of his invention in his autobiography written in 1890. during the outbreak of the crimean war, many english industrialists and inventors became interested in military technology. according to bessemer, his invention was inspired by a conversation with napoleon iii in 1854 pertaining to the steel required for better artillery. bessemer claimed that it "was the spark which kindled one of the greatest revolutions that the present century had to record, for during my solitary ride in a cab that night from vincennes to paris, i made up my mind to try what i could to improve the quality of iron in the manufacture of guns." at the time steel was used to make only small items like cutlery and tools, but was too expensive for cannons. starting in january 1855 he began working on a way to produce steel in the massive quantities required for artillery and by october he filed his first patent related to the bessemer process. he patented the method a year later in 1856.
bessemer process
shōwa steel produced pig iron and steel, and the steel mill was soon surrounded by a large industrial complex of other factories to produce a variety of metal products. sumitomo steel pipe established a plant to produce steel pipes, and manchurian roll manufacturing company to produce steel mill rolls. to feed the furnaces, coal mines were established at fushun, 35 kilometers to the east, which also led to electric power plants, coal liquefaction plants, cement works, brick kilns. by the end of the 1930s, there were over 780 japanese industrial plants in fengtian province.
showa steel works