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1 Hodgkinson, Eaton
[br]b. 26 February 1789 Anderton, Cheshire, Englandd. 18 June 1861 near Manchester, England[br]English engineer who devised d new form of cast-iron girder.[br]Eaton Hodgkinson's father, a farmer, died when he was 6 years old, but his mother was a resourceful woman who set up a business in Salford and ensured that her son received a sound schooling. Most important for his education, however, was his friendship with the Manchester scientific luminary Dr. Dalton, who instructed him in practical mathematics. These studies led Hodgkinson to devise a new form of cast-iron girder, carefully tested by experiments and which was widely adopted for fire-proof structures in the nineteenth century. Following Dalton, Hodgkinson became an active member of the Manchester Philosophical Society, of which he was elected President in 1848. He also became an active member of the British Association for the Advancement of Science. Hodgkinson's work on cast-iron girders secured him a Fellowship of the Royal Society, and the Royal Medal of the Society, in 1841. It was Hodgkinson also who verified the mathematical value of the pioneering experiments carried out by William Fairbairn for Robert Stephenson's proposed wrought-iron tube structure which, in 1849, became the Britannia Bridge over the Menai Straits. He received a Silver Medal for this work at the Paris Exhibition of 1858. Hodgkinson served as a member of the Royal Commission appointed to enquire into the application of iron to railway structures. In 1847 he was appointed Professor of the Mechanical Principles of Engineering at University College, London, but his health began to fail shortly after. He was elected an Honorary Member of the Institution of Civil Engineers in 1851. Described as "singularly simple and guileless", he was widely admired and respected.[br]Principal Honours and DistinctionsPresident, Manchester Philosophical Society 1848. FRS 1841. Royal Society Medal 1841.Further ReadingDictionary of National Biography, London.Proceedings of the Institution of Civil Engineers 21:542–5.AB -
2 Architecture and building
Biographical history of technology > Architecture and building
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3 Civil engineering
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4 Ewart, Peter
SUBJECT AREA: Textiles[br]b. 14 May 1767 Traquair, near Peebles, Scotlandd. September 1842 London, England[br]Scottish pioneer in the mechanization of the textile industry.[br]Peter Ewart, the youngest of six sons, was born at Traquair manse, where his father was a clergyman in the Church of Scotland. He was educated at the Free School, Dumfries, and in 1782 spent a year at Edinburgh University. He followed this with an apprenticeship under John Rennie at Musselburgh before moving south in 1785 to help Rennie erect the Albion corn mill in London. This brought him into contact with Boulton \& Watt, and in 1788 he went to Birmingham to erect a waterwheel and other machinery in the Soho Manufactory. In 1789 he was sent to Manchester to install a steam engine for Peter Drinkwater and thus his long connection with the city began. In 1790 Ewart took up residence in Manchester as Boulton \& Watt's representative. Amongst other engines, he installed one for Samuel Oldknow at Stockport. In 1792 he became a partner with Oldknow in his cotton-spinning business, but because of financial difficulties he moved back to Birmingham in 1795 to help erect the machines in the new Soho Foundry. He was soon back in Manchester in partnership with Samuel Greg at Quarry Bank Mill, Styal, where he was responsible for developing the water power, installing a steam engine, and being concerned with the spinning machinery and, later, gas lighting at Greg's other mills.In 1798, Ewart devised an automatic expansion-gear for steam engines, but steam pressures at the time were too low for such a device to be effective. His grasp of the theory of steam power is shown by his paper to the Manchester Literary and Philosophical Society in 1808, On the Measure of Moving Force. In 1813 he patented a power loom to be worked by the pressure of steam or compressed air. In 1824 Charles Babbage consulted him about automatic looms. His interest in textiles continued until at least 1833, when he obtained a patent for a self-acting spinning mule, which was, however, outclassed by the more successful one invented by Richard Roberts. Ewart gave much help and advice to others. The development of the machine tools at Boulton \& Watt's Soho Foundry has been mentioned already. He also helped James Watt with his machine for copying sculptures. While he continued to run his own textile mill, Ewart was also in partnership with Charles Macintosh, the pioneer of rubber-coated cloth. He was involved with William Fairbairn concerning steam engines for the boats that Fairbairn was building in Manchester, and it was through Ewart that Eaton Hodgkinson was introduced to Fairbairn and so made the tests and calculations for the tubes for the Britannia Railway Bridge across the Menai Straits. Ewart was involved with the launching of the Liverpool \& Manchester Railway as he was a director of the Manchester Chamber of Commerce at the time.In 1835 he uprooted himself from Manchester and became the first Chief Engineer for the Royal Navy, assuming responsibility for the steamboats, which by 1837 numbered 227 in service. He set up repair facilities and planned workshops for overhauling engines at Woolwich Dockyard, the first establishment of its type. It was here that he was killed in an accident when a chain broke while he was supervising the lifting of a large boiler. Engineering was Ewart's life, and it is possible to give only a brief account of his varied interests and connections here.[br]Further ReadingObituary, 1843, "Institution of Civil Engineers", Annual General Meeting, January. Obituary, 1843, Manchester Literary and Philosophical Society Memoirs (NS) 7. R.L.Hills, 1987–8, "Peter Ewart, 1767–1843", Manchester Literary and PhilosophicalSociety Memoirs 127.M.B.Rose, 1986, The Gregs of Quarry Bank Mill The Rise and Decline of a Family Firm, 1750–1914, Cambridge (covers E wart's involvement with Samuel Greg).R.L.Hills, 1970, Power in the Industrial Revolution, Manchester; R.L.Hills, 1989, Powerfrom Steam, Cambridge (both look at Ewart's involvement with textiles and steam engines).RLH -
5 MacNeill, Sir John Benjamin
[br]b. 1793 (?) Mount Pleasant, near Dundalk, Louth, Irelandd. 2 March 1880[br]Irish railway engineer and educator.[br]Sir John MacNeill became a pupil of Thomas Telford and served under him as Superintendent of the Southern Division of the Holyhead Road from London to Shrewsbury. In this capacity he invented a "Road Indicator" or dynamometer. Like other Telford followers, he viewed the advent of railways with some antipathy, but after the death of Telford in 1834 he quickly became involved in railway construction and in 1837 he was retained by the Irish Railway Commissioners to build railways in the north of Ireland (Vignoles received the commission for the south). Much of his subsequent career was devoted to schemes for Irish railways, both those envisaged by the Commissioners and other private lines with more immediately commercial objectives. He was knighted in 1844 on the completion of the Dublin \& Drogheda Railway along the east coast of Ireland. In 1845 MacNeill lodged plans for over 800 miles (1,300 km) of Irish railways. Not all of these were built, many falling victim to Irish poverty in the years after the Famine, but he maintained a large staff and became financially embarrassed. His other schemes included the Grangemouth Docks in Scotland, the Liverpool \& Bury Railway, and the Belfast Waterworks, the latter completed in 1843 and subsequently extended by Bateman.MacNeill was an engineer of originality, being the person who introduced iron-lattice bridges into Britain, employing the theoretical and experimental work of Fairbairn and Eaton Hodgkinson (the Boyne Bridge at Drogheda had two such spans of 250ft (76m) each). He also devised the Irish railway gauge of 5 ft 2 in. (1.57 m). Consulted by the Board of Trinity College, Dublin, regarding a School of Engineering in 1842, he was made an Honorary LLD of the University and appointed the first Professor of Civil Engineering, but he relinquished the chair to his assistant, Samuel Downing, in 1846. MacNeill was a large and genial man, but not, we are told, "of methodical and business habit": he relied heavily on his subordinates. Blindness obliged him to retire from practice several years before his death. He was an early member of the Institution of Civil Engineers, joining in 1827, and was elected a Fellow of the Royal Society in 1838.[br]Principal Honours and DistinctionsFRS 1838.Further ReadingDictionary of National Biography. Proceedings of the Institution of Civil Engineers73:361–71.ABBiographical history of technology > MacNeill, Sir John Benjamin
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Eaton Hodgkinson — Eaton A. Hodgkinson (February 26, 1789 June 18, 1861) was an English engineer, a pioneer of the application of mathematics to problems of structural design.Early lifeHodgkinson was born in the village of Anderton, near Great Budworth, Cheshire to … Wikipedia
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