-
61 Dunlop, John Boyd
SUBJECT AREA: Land transport[br]b. 5 February 1840 Dreghorn, Ayrshire, Scotlandd. 23 October 1921 Ballsbridge, Dublin, Ireland[br]Scottish inventor and pioneer of the pneumatic tyre.[br]Reared in an agricultural community, Dunlop became a qualified veterinary surgeon and practised successfully in Edinburgh and then in Belfast when he moved there in 1867. In October 1887, Dunlop's 9-year-old son complained of the rough ride he experienced with his tricycle over the cobbled streets of Belfast. Dunlop devised and fitted rubber air tubes, held on to a wooden ring by tacking a linen covering which he fixed around the wheels of the tricycle. A marked improvement in riding quality was noted. After further development, a new tricycle was ordered, with the new airtube wheels. This was so successful that Dunlop applied for a patent on 23 July 1889, granted on 7 December. With tyres made in Edinburgh to his specification, bicycles were manufactured by Edlin \& Co. of Belfast and put on sale complete with pneumatic tyres. The successful performance of a racing bicycle thus equipped inspired an unsuccessful competitor, William Harvey de Cros, who had used a solid-tyred machine, to take an interest in Dunlop's invention. With Dunlop, he refloated a company in Dublin, the Pneumatic Tyre \& Booth's Cycle Agency. Dunlop made over his patents, for the tyre, valves, rims and fixing methods, to Du Cros and took shares in the company. Although he was involved in it for many years, it was Du Cros who steered the company through several struggles to success.The pneumatic tyre revolutionized cycling and made possible the success of the motor vehicle, although Dunlop did not profit greatly from his invention. After the sale of the company in 1896, to E.T.Hooley for $3 million, he took no further part in the development of the pneumatic tyre. The company went on to become the great Dunlop Rubber Company.[br]Further ReadingJ.McClintock, 1923, History of the Pneumatic Tyre, Belfast (written by Dunlop's daughter, who based the book on her father's reminiscences).LRD -
62 Fox, Sir Charles
[br]b. 11 March 1810 Derby, Englandd. 14 June 1874 Blackheath, London, England[br]English railway engineer, builder of Crystal Palace, London.[br]Fox was a pupil of John Ericsson, helped to build the locomotive Novelty, and drove it at the Rainhill Trials in 1829. He became a driver on the Liverpool \& Manchester Railway and then a pupil of Robert Stephenson, who appointed him an assistant engineer for construction of the southern part of the London \& Birmingham Railway, opened in 1837. He was probably responsible for the design of the early bow-string girder bridge which carried the railway over the Regent's Canal. He also invented turnouts with switch blades, i.e. "points". With Robert Stephenson he designed the light iron train sheds at Euston Station, a type of roof that was subsequently much used elsewhere. He then became a partner in Fox, Henderson \& Co., railway contractors and manufacturers of railway equipment and bridges. The firm built the Crystal Palace in London for the Great Exhibition of 1851: Fox did much of the detail design work personally and was subsequently knighted. It also built many station roofs, including that at Paddington. From 1857 Fox was in practice in London as a consulting engineer in partnership with his sons, Charles Douglas Fox and Francis Fox. Sir Charles Fox became an advocate of light and narrow-gauge railways, although he was opposed to break-of-gauge unless it was unavoidable. He was joint Engineer for the Indian Tramway Company, building the first narrow-gauge (3 ft 6 in. or 107 cm) railway in India, opened in 1865, and his firm was Consulting Engineer for the first railways in Queensland, Australia, built to the same gauge at the same period on recommendation of Government Engineer A.C.Fitzgibbon.[br]Principal Honours and DistinctionsKnighted 1851.Further ReadingObituary, 1875, Minutes of Proceedings of the Institution of Civil Engineers 39:264.F.Fox, 1904, River, Road, and Rail, John Murray, Ch. 1 (personal reminiscences by his son).L.T.C.Rolt, 1970, Victorian Engineering, London: Allen Lane.PJGR -
63 Fox, Uffa
SUBJECT AREA: Ports and shipping[br]b. 15 January 1898 Cowes, Isle of Wight, Englandd. 27 October 1972 Isle of Wight (?), England[br]English yacht designer.[br]Coming from a family that had originated in East Anglia, his first name was that of an early British king and was to typify his unusual and refreshing zest for life. Fox commenced his professional career as an apprentice with the flying boat and high-speed craft builders Messrs S.E.Saunders, and shortly after the outbreak of the First World War he was conscripted into the Royal Naval Air Service. In 1920 he made his first transatlantic crossing under sail, a much greater adventure then than now, and returned to the United Kingdom as deck-hand on a ship bound for Liverpool. He was to make the crossing under sail twice more. Shortly after his marriage in 1925, he purchased the old Floating Bridge at Cowes and converted it to living accommodation, workshops and drawing offices. By the 1930s his life's work was in full swing, with designs coming off his drawing board for some of the most outstanding mass-produced craft ever built, as well as for some remarkable one-off yachts. His experimentation with every kind of sailing craft, and even with the Eskimo kayak, gave him the knowledge and experience that made his name known worldwide. During the Second World War he designed and produced the world's first airborne parachuted lifeboat. Despite what could be described as a robust lifestyle, coupled with interests in music, art and horseriding, Fox continued to produce great designs and in the late 1940s he introduced the Firefly, followed by the beautiful Flying Fifteen class of racing keel boats. One of his most unusual vessels was Britannia, the 24 ft (7.3 m) waterline craft that John Fairfax was to row across the Atlantic. Later came Britannia II, which Fairfax took across the Pacific![br]Principal Honours and DistinctionsCBE 1959. Royal Designer to Industry (RDI).BibliographyFox produced a series of yachting books, most first published in the late 1930s, and some more lighthearted volumes of reminiscences in the 1960s. Some of the best-known titles are: Sail and Power, Racing and Cruising Design, Uffa Fox's Second Book and The Crest of the Wave.Further ReadingJ.Dixon, 1978, Uffa Fox. A Personal Biography, Brighton: Angus \& Robertson.FMW -
64 Parkhurst, Edward G.
[br]b. 29 August 1830 Thompson, Connecticut, USAd. 31 July 1901 Hartford, Connecticut, USA[br]American mechanical engineer and inventor.[br]Little is known of the early training of Edward G. Parkhurst, but at the time of Civil War (1861–5) he was employed by the Savage Arms Company of Middletown, Connecticut. In 1869 he joined the Pratt \& Whitney Company of Hartford, Connecticut, as Assistant Superintendent and later took charge of their gun department. He was the inventor of many improvements in machine tools and armaments. Among these was an automatic rod feeder for turret lathes, in which movement of a single lever enabled bar stock to be fed through the lathe spindle and gripped by a collet chuck while the machine was in motion. This was patented in August 1871 and was followed by other patents, particularly for improvements in machine guns and their accessories. Parkhurst retired from Pratt \& Whitney c. 1895 but was afterwards associated with the American Ordnance Company and the Bethlehem Steel Company. He was a founder member of the American Society of Mechanical Engineers in 1880 and served his home city of Hartford as Councillor and Alderman. In 1900 he contributed to the journal American Machinist some articles of reminiscences dealing with the early history of the American machine-tool industry and, in particular, the earliest milling machines and the origin of the turret lathe.RTS -
65 Porter, Charles Talbot
SUBJECT AREA: Steam and internal combustion engines[br]b. 18 January 1826 Auburn, New York, USAd. 1910 USA[br]American inventor of a stone dressing machine, an improved centrifugal governor and a high-speed steam engine.[br]Porter graduated from Hamilton College, New York, in 1845, read law in his father's office, and in the autumn of 1847 was admitted to the Bar. He practised for six or seven years in Rochester, New York, and then in New York City. He was drawn into engineering when aged about 30, first through a client who claimed to have invented a revolutionary type of engine and offered Porter the rights to it as payment of a debt. Having lent more money, Porter saw neither the man nor the engine again. Porter followed this with a similar experience over a patent for a stone dressing machine, except this time the machine was built. It proved to be a failure, but Porter set about redesigning it and found that it was vastly improved when it ran faster. His improved machine went into production. It was while trying to get the steam engine that drove the stone dressing machine to run more smoothly that he made a discovery that formed the basis for his subsequent work.Porter took the ordinary Watt centrifugal governor and increased the speed by a factor of about ten; although he had to reduce the size of the weights, he gained a motion that was powerful. To make the device sufficiently responsive at the right speed, he balanced the centrifugal forces by a counterweight. This prevented the weights flying outwards until the optimum speed was reached, so that the steam valves remained fully open until that point and then the weights reacted more quickly to variations in speed. He took out a patent in 1858, and its importance was quickly recognized. At first he manufactured and sold the governors himself in a specially equipped factory, because this was the only way he felt he could get sufficient accuracy to ensure a perfect action. For marine use, the counterweight was replaced by a spring.Higher speed had brought the advantage of smoother running and so he thought that the same principles could be applied to the steam engine itself, but it was to take extensive design modifications over several years before his vision was realized. In the winter of 1860–1, J.F. Allen met Porter and sketched out his idea of a new type of steam inlet valve. Porter saw the potential of this for his high-speed engine and Allen took out patents for it in 1862. The valves were driven by a new valve gear designed by Pius Fink. Porter decided to display his engine at the International Exhibition in London in 1862, but it had to be assembled on site because the parts were finished in America only just in time to be shipped to meet the deadline. Running at 150 rpm, the engine caused a sensation, but as it was non-condensing there were few orders. Porter added condensing apparatus and, after the failure of Ormerod Grierson \& Co., entered into an agreement with Joseph Whitworth to build the engines. Four were exhibited at the 1867 Paris Exposition Universelle, but Whitworth and Porter fell out and in 1868 Porter returned to America.Porter established another factory to build his engine in America, but he ran into all sorts of difficulties, both mechanical and financial. Some engines were built, and serious production was started c. 1874, but again there were further problems and Porter had to leave his firm. High-speed engines based on his designs continued to be made until after 1907 by the Southwark Foundry and Machine Company, Philadelphia, so Porter's ideas were proved viable and led to many other high-speed designs.[br]Bibliography1908, Engineering Reminiscences, New York: J. Wiley \& Sons; reprinted 1985, Bradley, Ill.: Lindsay (autobiography; the main source of information about his life).Further ReadingR.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (examines his governor and steam engine).O.Mayr, 1974, "Yankee practice and engineering theory; Charles T.Porter and the dynamics of the high-speed engine", Technology and Culture 16 (4) (examines his governor and steam engine).RLH -
66 Sickels, Frederick Ellsworth
[br]b. 20 September 1819 Gloucester County, New Jersey, USAd. 8 March 1895 Kansas City, Missouri, USA[br]American inventor of a steam-inlet cut-off valve mechanism for engines and steam steering apparatus for ships.[br]Sickels was educated in New York City, where his father was a practising physician. As he showed mechanical aptitude, at the age of 16 he joined the Harlem Railroad as a rod man, and a year later became a machinist in the Allaire Works in New York, studying physics and mechanics in his spare time. He perfected his cut-off mechanism for drop valves in 1841 and patented it the following year. The liberating mechanism allowed the valve to fall quickly onto its seat and so eliminated "wire-drawing" of the steam, and Sickels arranged a dashpot to prevent the valve hitting the seat violently. Through further improvements patented in 1843 and 1845, he gained a considerable fortune, but he subsequently lost it through fighting patent infringements because his valve gear was copied extensively.In 1846 he turned his attention to using a steam engine to assist the steering in ships. He filed a patent application in 1849 and completed a machine in 1854, but he could not find any ship owner willing to try it until 1858, when it was fitted to the August. A patent was granted in 1860, but as no American ship owners showed interest Sickels went to England, where he obtained three British patents; once again, however, he found no interest. He returned to the United States in 1867 and continued his fruitless efforts until he was financially ruined. He patented improved compound engines in 1875 and also contributed improvements in sinking pneumatic piles. He turned to civil engineering and engaged in railway and bridge construction in the west. In about 1890 he was made Consulting Engineer to the National Water Works Company of New York and in 1891 became Chief Engineer of its operations at Kansas City.[br]Further ReadingDictionary of American Biography, 1935, Vol. XVII, New York: C.Scribner's Sons. C.T.Porter, 1908, Engineering Reminiscences, reprinted 1985, Bradley, Ill.: Lindsay Publications (comments on his cut-off valve gear).H.G.Conway, 1955–6, "Some notes on the origins of mechanical servo systems", Transactions of the Newcomen Society 29 (comments on his steam steering apparatus).RLHBiographical history of technology > Sickels, Frederick Ellsworth
-
67 reminiscence
kb. kenang-kenangan. book of reminiscences buku kenang-kenangan. -
68 reminiscence
/,remi'nisns/ * danh từ - sự nhớ lại, sự hồi tưởng - nét phảng phất làm nhớ lại (cái gì đã mất) =there is a reminiscence of his father in the way he walks+ dáng đi của anh ta phảng phất đôi nét của cha anh ta - (số nhiều) kỷ niệm =the scene awakens reminiscences of my youth+ quang cảnh này làm tôi nhớ lại những kỷ niệm xưa - (số nhiều) tập ký sự, hồi ký - (âm nhạc) nét phảng phất -
69 reminiscence
[ˌremi΄nisns] n հիշողություն, հուշ, հիշատակ. reminiscences հուշեր
Страницы
См. также в других словарях:
Reminiscences — Réminiscences Cet article fait partie de la série Kenshin le vagabond Personnages Volumes 1 2 3 4 … Wikipédia en Français
Réminiscences — est le vingtième volume du manga Kenshin le vagabond. Sommaire 1 Résumé par chapitre 1.1 Chapitre des souvenirs : 4 Tomoe Yukishiro 1.2 Chapitre des souvenirs : 5 La folie … Wikipédia en Français
reminiscences — n. 1) personal reminiscences 2) reminiscences about * * * personal reminiscences reminiscences about … Combinatory dictionary
reminiscences — plural noun her reminiscences of a wartime childhood Syn: memories, recollections, reflections, remembrances … Thesaurus of popular words
Reminiscences of a Stock Operator — is a 1923 book written by Edwin Lefèvre which tells a fictionalized version of the early years of the life story of Jesse Livermore; the Wall Street Journal describes the book as a classic . A Classic Book on the Art of Speculation First… … Wikipedia
Réminiscences de Don Juan — (S. 418) is an opera fantasy for piano by Franz Liszt on themes from Mozart s Don Giovanni. It is extremely technically demanding. For this reason, and perhaps also because of its length and dramatic intensity, it does not appear in concert… … Wikipedia
Reminiscences 2012 — Réminiscences 2012 Cet article fait partie de la série Science fiction La SF à l’écran autre A B C … Wikipédia en Français
Réminiscences 2012 — est un recueil de nouvelles de science fiction de l écrivain français Laurent Kloetzer. Il a été publié en 2001 (Éditions Nestiveqnen). Aussi, les nouvelles qui forment un tout homogène puisqu elles partagent les mêmes univers et personnages… … Wikipédia en Français
Réminiscences de Boccanegra — Liste des transcriptions d opéras italiens par Franz Liszt L article liste des transcriptions d opéras italiens par Franz Liszt est une liste des transcriptions pour le piano qui ont été faites par Franz Liszt à partir d opéras italiens. Sommaire … Wikipédia en Français
Réminiscences de Boccanegra (Franz Liszt) — Liste des transcriptions d opéras italiens par Franz Liszt L article liste des transcriptions d opéras italiens par Franz Liszt est une liste des transcriptions pour le piano qui ont été faites par Franz Liszt à partir d opéras italiens. Sommaire … Wikipédia en Français
reminiscences — rem·i nis·cence || ‚remɪ nɪsns n. recollection of past events and experiences … English contemporary dictionary
