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development; manufactureАвиация и космонавтика. Русско-английский словарь > выработка
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development; manufactureБизнес, юриспруденция. Русско-английский словарь > выработка
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Makarov: powder blast developmentУниверсальный русско-английский словарь > проходка минных выработок
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6 Bickford, William
SUBJECT AREA: Mining and extraction technology[br]b. 1774 Devonshire, Englandd. 1834 Tuckingmill, Cornwall, England[br]English leather merchant, inventor of the safety fuse.[br]Having tried in vain to make his living as a currier in Truro, Cornwall, he set up as a leather merchant in Tuckingmill and became aware of the high casualty rates suffered by local tin-miners in shot-firing accidents. He therefore started attempts to discover a safe means of igniting charges, and came up with a form of safety fuse that made the operation of blasting much less hazardous. It was patented in 1831 and consisted of a cable of jute and string containing a thin core of powder; it provided a dependable means for conveying the flame to the charge so that the danger of hang fires was almost eliminated. Its accurate and consistent timing allowed the firing of several holes at a time without the fusing of the last being destroyed by the blast from the first. By 1840, a gutta-percha fuse had been developed which could be used in wet conditions and was an improvement until the use of dynamite for shot-firing.Accounts of the invention, after it had been described in the Report from the Select Committee on Accidents in Mines (1835, London) were widespread in various foreign mining journals, and in the 1840s factories were set up in different mining areas on the European continent, in America and in Australia. Bickford himself founded a firm at Tuckingmill in the year that he came up with his invention which was later controlled by his descendants until it finally merged with Imperial Chemical Industries (ICI) after the First World War.[br]Further ReadingF.Heise, 1904, Sprengstoffe und Zündung der Sprengschüsse, Berlin (provides a detailed description of the development).W.J.Reader, 1970, Imperial Chemical Industries. A History, Vol. I, London: Oxford University Press (throws light on the tight international connections of Bickford's firm with Nobel industries).WK -
7 Ransome, Frederick
[br]b. 18 June 1818 Rushmere, Suffolk, Englandd. 19 April 1893 London, England[br]English engineer and inventor of a type of artificial stone.[br]Frederick Ransome was the son of James Ransome (1782–1849) and grandson of Robert Ransome, founder of the well-known Ipswich firm of engineers. He did not become a partner in the family firm, but devoted his life to experiments to develop an artificial stone. These experiments were recorded in a paper which he presented to the Institution of Civil Engineers in 1848 and in a long series of over thirty patents dating from 1844. The material so formed was a sandstone, the particles of which were bonded together by a silicate of lime. It could be moulded into any required form while in its initial soft state, and when hard was suitable for surface-dressing or carving. It was used for many public buildings, but time proved it unsuitable for outside work. Ransome also used his artificial stone to make grinding wheels by incorporating emery powder in the mixture. These were found to be much superior to those made of natural stone. Another use of the artificial stone was in a porous form which could be used as a filter. In later years Ransome turned his attention to the manufacture of Portland cement and of a cheaper substitute incorporating blast-furnace slag. He also invented a rotary kiln for burning the cement, the first of these being built in 1887. It was 26 ft (7.9 m) long and 5 ft (1.5 m) in diameter; although reasonably successful, the development of such kilns of much greater length was carried out in America rather than England. Ransome was elected an Associate of the Institution of Civil Engineers in 1848 and served as an Associate of[br]Bibliography1848, "On the manufacture of artificial stone with a silica base", Minutes of the Proceedings of the Institution of Civil Engineers 7:57.RTS
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