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21 MacGregor, Robert
SUBJECT AREA: Ports and shipping[br]b. 1873 Hebburn-on-Tyne, Englandd. 4 October 1956 Whitley Bay, England[br]English naval architect who, working with others, significantly improved the safety of life at sea.[br]On leaving school in 1894, MacGregor was apprenticed to a famous local shipyard, the Palmers Shipbuilding and Iron Company of Jarrow-on-Tyne. After four years he was entered for the annual examination of the Worshipful Company of Shipwrights, coming out top and being nominated Queen's Prizeman. Shortly thereafter he moved around shipyards to gain experience, working in Glasgow, Hull, Newcastle and then Dunkirk. His mastery of French enabled him to obtain in 1906 the senior position of Chief Draughtsman at an Antwerp shipyard, where he remained until 1914. On his return to Britain, he took charge of the small yard of Dibbles in Southampton and commenced a period of great personal development and productivity. His fertile mind enabled him to register no fewer than ten patents in the years 1919 to 1923.In 1924 he started out on his own as a naval architect, specializing in the coal trade of the North Sea. At that time, colliers had wooden hatch covers, which despite every caution could be smashed by heavy seas, and which in time of war added little to hull integrity after a torpedo strike. The International Loadline Committee of 1932 noted that 13 per cent of ship losses were through hatch failures. In 1927, designs for selftrimming colliers were developed, as well as designs for steel hatch covers. In 1928 the first patents were under way and the business was known for some years as MacGregor and King. During this period, steel hatch covers were fitted to 105 ships.In 1937 MacGregor invited his brother Joseph (c. 1883–1967) to join him. Joseph had wide experience in ship repairs and had worked for many years as General Manager of the Prince of Wales Dry Docks in Swansea, a port noted for its coal exports. By 1939 they were operating from Whitley Bay with the name that was to become world famous: MacGregor and Company (Naval Architects) Ltd. The new company worked in association with the shipyards of Austin's of Sunderland and Burntisland of Fife, which were then developing the "flatiron" colliers for the up-river London coal trade. The MacGregor business gained a great boost when the massive coastal fleet of William Cory \& Son was fitted with steel hatches.In 1945 the brothers appointed Henri Kummerman (b. 1908, Vienna; d. 1984, Geneva) as their sales agent in Europe. Over the years, Kummerman effected greater control on the MacGregor business and, through his astute business dealings and his well-organized sales drives worldwide, welded together an international company in hatch covers, cargo handling and associated work. Before his death, Robert MacGregor was to see mastery of the design of single-pull steel hatch covers and to witness the acceptance of MacGregor hatch covers worldwide. Most important of all, he had contributed to great increases in the safety and the quality of life at sea.[br]Further ReadingL.C.Burrill, 1931, "Seaworthiness of collier types", Transactions of the Institution of Naval Architechts.S.Sivewright, 1989, One Man's Mission-20,000 Ships, London: Lloyd's of London Press.See also: Ayre, Sir Amos LowreyFMW -
22 Norton, Charles Hotchkiss
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 23 November 1851 Plainville, Connecticut, USAd. 27 October 1942 Plainville, Connecticut, USA[br]American mechanical engineer and machine-tool designer.[br]After an elementary education at the public schools of Plainville and Thomaston, Connecticut, Charles H.Norton started work in 1866 at the Seth Thomas Clock Company in Thomaston. He was soon promoted to machinist, and further progress led to his successive appointments as Foreman, Superintendent of Machinery and Manager of the department making tower clocks. He designed many public clocks.In 1886 he obtained a position as Assistant Engineer with the Brown \& Sharpe Manufacturing Company at Providence, Rhode Island, and was engaged in redesigning their universal grinding machine to give it more rigidity and make it more suitable for use as a production machine. In 1890 he left to become a partner in a newly established firm, Leland, Faulconer \& Norton Company at Detroit, Michigan, designing and building machine tools. He withdrew from this firm in 1895 and practised as a consulting mechanical engineer for a short time before returning to Brown \& Sharpe in 1896. There he designed a grinding machine incorporating larger and wider grinding wheels so that heavier cuts could be made to meet the needs of the mass-production industries, especially the automobile industry. This required a heavier and more rigid machine and greater power, but these ideas were not welcomed at Brown \& Sharpe and in 1900 Norton left to found the Norton Grinding Company in Worcester, Massachusetts. Here he was able to develop heavy-production grinding machines, including special machines for grinding crank-shafts and camshafts for the automobile industry.In setting up the Norton Grinding Company, Charles H.Norton received financial support from members of the Norton Emery Wheel Company (also of Worcester and known after 1906 as the Norton Company), but he was not related to the founder of that company. The two firms were completely independent until 1919 when they were merged. From that time Charles H.Norton served as Chief Engineer of the machinery division of the Norton Company, until 1934 when he became their Consulting Engineer.[br]Principal Honours and DistinctionsCity of Philadelphia, John Scott Medal 1925.BibliographyNorton was granted more than one hundred patents and was author of Principles of Cylindrical Grinding, 1917, 1921, Worcester, Mass.Further ReadingRobert S.Woodbury, 1959, History of the Grinding Machine, Cambridge, Mass, (contains biographical information and details of the machines designed by Norton).RTSBiographical history of technology > Norton, Charles Hotchkiss
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23 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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