Bessemer, Sir Henry

English inventor best known for revolutionizing steel manufacture

Price: $185.00

Description:
(1813-1898) English engineer and inventor, chiefly known for Bessemer process for manufacture of steel. Made first fortune with series of six steam-powered machines for making very fine brass powder used as a gold paint. The profits from sale of the paint allowed him to pursue his other inventions. Patented method for making continuous ribbon of plate glass in 1848, but it was not commercially successful. Bessemer worked on manufacturing cheap steel for ordinance production 1850-55 when he patented his method. The Bessemer process involved using oxygen in air blown through molten pig iron to burn off the impurities and thus create steel. Many industries were reliant on cast iron and wrought iron alone, such as bridges and tracks, where the treacherous nature of cast iron was keenly felt by engineers and designers. Though this process is no longer commercially used, at the time of its invention it was of enormous industrial importance because it lowered the cost of production, leading to steel being widely substituted for cast iron. Erected steelworks in Sheffield to manufacture steel. The initial output was insignificant, but gradually operations were enlarged until competition became effective, and traders noted that Henry Bessemer & Co. was underselling them to the extent of $20 a ton. License royalties for use of his process considerably exceeded £1M. Bessemer held at least 129 patents from 1838 to 1883, chiefly concerned with manufacturing in iron, steel, glass, sugar, and cannons or other ordnance. Obtained 1857 patent for casting of metal between contrarotating rollers, forerunner of today's continuous casting processes, and his original idea has been implemented in the direct continuous casting of steel strip. Knighted and made Fellow of the Royal Society 1879. City of Bessemer, Alabama, named for him. ALS on 7 x 4 Ĺ black-bordered (mourning) stationary to Mr. Ellisser, no place or date, sending thanks for his note of sympathy on Bessemerís bereavement.

Condition: Very good
Type:Letter






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