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1 James Watt
James Watt (stotsk ingenjör, efter honom är den elektriska enheten watt uppkallad) -
2 James Watt
James Watt (Schots ingenieur, capaciteit eenheid naar hem genoemd) -
3 James Watt
m.James Watt, Watt. -
4 James Watt
ג'יימס ואט (1736-1819), מהנדס וממציא סקוטי, על-שמו יחידת הספק* * *◙ קפסה תדיחי ומש-לע,יטוקס איצממו סדנהמ,(9181-6371) טאו סמיי'ג◄ -
5 James Watt
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6 Watt, James
SUBJECT AREA: Steam and internal combustion engines[br]b. 19 January 1735 Greenock, Renfrewshire, Scotlandd. 19 August 1819 Handsworth Heath, Birmingham, England[br]Scottish engineer and inventor of the separate condenser for the steam engine.[br]The sixth child of James Watt, merchant and general contractor, and Agnes Muirhead, Watt was a weak and sickly child; he was one of only two to survive childhood out of a total of eight, yet, like his father, he was to live to an age of over 80. He was educated at local schools, including Greenock Grammar School where he was an uninspired pupil. At the age of 17 he was sent to live with relatives in Glasgow and then in 1755 to London to become an apprentice to a mathematical instrument maker, John Morgan of Finch Lane, Cornhill. Less than a year later he returned to Greenock and then to Glasgow, where he was appointed mathematical instrument maker to the University and was permitted in 1757 to set up a workshop within the University grounds. In this position he came to know many of the University professors and staff, and it was thus that he became involved in work on the steam engine when in 1764 he was asked to put in working order a defective Newcomen engine model. It did not take Watt long to perceive that the great inefficiency of the Newcomen engine was due to the repeated heating and cooling of the cylinder. His idea was to drive the steam out of the cylinder and to condense it in a separate vessel. The story is told of Watt's flash of inspiration as he was walking across Glasgow Green one Sunday afternoon; the idea formed perfectly in his mind and he became anxious to get back to his workshop to construct the necessary apparatus, but this was the Sabbath and work had to wait until the morrow, so Watt forced himself to wait until the Monday morning.Watt designed a condensing engine and was lent money for its development by Joseph Black, the Glasgow University professor who had established the concept of latent heat. In 1768 Watt went into partnership with John Roebuck, who required the steam engine for the drainage of a coal-mine that he was opening up at Bo'ness, West Lothian. In 1769, Watt took out his patent for "A New Invented Method of Lessening the Consumption of Steam and Fuel in Fire Engines". When Roebuck went bankrupt in 1772, Matthew Boulton, proprietor of the Soho Engineering Works near Birmingham, bought Roebuck's share in Watt's patent. Watt had met Boulton four years earlier at the Soho works, where power was obtained at that time by means of a water-wheel and a steam engine to pump the water back up again above the wheel. Watt moved to Birmingham in 1774, and after the patent had been extended by Parliament in 1775 he and Boulton embarked on a highly profitable partnership. While Boulton endeavoured to keep the business supplied with capital, Watt continued to refine his engine, making several improvements over the years; he was also involved frequently in legal proceedings over infringements of his patent.In 1794 Watt and Boulton founded the new company of Boulton \& Watt, with a view to their retirement; Watt's son James and Boulton's son Matthew assumed management of the company. Watt retired in 1800, but continued to spend much of his time in the workshop he had set up in the garret of his Heathfield home; principal amongst his work after retirement was the invention of a pantograph sculpturing machine.James Watt was hard-working, ingenious and essentially practical, but it is doubtful that he would have succeeded as he did without the business sense of his partner, Matthew Boulton. Watt coined the term "horsepower" for quantifying the output of engines, and the SI unit of power, the watt, is named in his honour.[br]Principal Honours and DistinctionsFRS 1785. Honorary LLD, University of Glasgow 1806. Foreign Associate, Académie des Sciences, Paris 1814.Further ReadingH.W.Dickinson and R Jenkins, 1927, James Watt and the Steam Engine, Oxford: Clarendon Press.L.T.C.Rolt, 1962, James Watt, London: B.T. Batsford.R.Wailes, 1963, James Watt, Instrument Maker (The Great Masters: Engineering Heritage, Vol. 1), London: Institution of Mechanical Engineers.IMcN -
7 watt
m.1 watt.2 Watt, James Watt.* * *(pl watts)* * *[bat, ɤwat]* * *[bat, ɤwat]* * */bat, ɣwat/watt -
8 watt
s.1 vatio (electricidad y electrónica)2 Watt, James Watt. -
9 watt
= Wватт, Втв международной системе СИ - единица измерения мощности: 1 ватт механической мощности соответствует работе в 1 джоуль (joule), совершаемой за 1 секунду; 1 ватт мощности теплового потока или потока звуковой энергии эквивалентен механической мощности в 1 ватт; 1 ватт активной электрической мощности также эквивалентен механической мощности в 1 ватт и определяется как энергия, выделяющаяся за 1 секунду при протекании тока, равного 1 A, между двумя точками проводника, между которыми приложена разность потенциалов 1 B. Названа в честь создателя паровой машины Джеймса Уатта (James Watt, 1736-1819 гг.)Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. > watt
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10 Watt'sches Parallelogramm
nparallel motion [James Watt] -
11 watt
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12 watt
n. Watt (James - skotsk ingenjör efter vilken enheten för strömstyrkan är uppkallad)* * *[wot]((abbreviated to W when written) a unit of power, especially of heat or light.) watt -
13 Pickard, James
SUBJECT AREA: Steam and internal combustion engines[br]fl. c. 1780 Birmingham, England[br]English patentee of the application of the crank to steam engines.[br]James Pickard, the Birmingham button maker, also owned a flour mill at Snow Hill, in 1780, where Matthew Wasborough installed one of his rotative engines with ratchet gear and a flywheel. In August 1780, Pickard obtained a patent (no. 1263) for an application to make a rotative engine with a crank as well as gearwheels, one of which was weighted to help return the piston in the atmospheric cylinder during the dead stroke and overcome the dead centres of the crank. Wasborough's flywheel made the counterweight unnecessary, and engines were built with this and Pickard's crank. Several Birmingham business people seem to have been involved in the patent, and William Chapman of Newcastle upon Tyne was assigned the sole rights of erecting engines on the Wasborough-Pickard system in the counties of Northumberland, Durham and York. Wasborough was building engines in the south until his death the following year. The patentees tried to bargain with Boulton \& Watt to exchange the use of the crank for that of the separate condenser, but Boulton \& Watt would not agree, probably because James Watt claimed that one of his workers had stolen the idea of the crank and divulged it to Pickard. To avoid infringing Pickard's patent, Watt patented his sun-and-planet motion for his rotative engines.[br]BibliographyAugust 1780, British patent no. 1,263 (rotative engine with crank and gearwheels).Further ReadingJ.Farey, 1827, A Treatise on the Steam Engine, Historical, Practical and Descriptive, reprinted 1971, Newton Abbot: David \& Charles (contains an account of Pickard's crank). R.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (provides an account of Pickard's crank).R.A.Buchanan, 1978–9, "Steam and the engineering community in the eighteenth century", Transactions of the Newcomen Society 50 ("Thomas Newcomen. A commemorative symposium") (provides details about the development of his engine).RLH -
14 Heriot-Watt University
[,herɪət'wɔt,juːnɪ,vəːsitɪ]университе́т Хе́риот-Уо́тта (в Эдинбурге. Основан в 1966; более 5 тыс. студентов)назван в честь известных шотландцев - ювелира Дж.Хериота [George Heriot, 1563-1624] и инженера и изобретателя Дж.Уотта [James Watt, 1736-1819]English-Russian Great Britain dictionary (Великобритания. Лингвострановедческий словарь) > Heriot-Watt University
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15 Jaime Watt
m.James Watt. -
16 Уатт, Джеймс
James Watt -
17 Уатт, Джеймс
James Watt -
18 ג'יימס ואט
James Watt (1736-1819), Scottish engineer and inventor of the steam engine after whom electrical wattage is named -
19 ג'יימס וט
James Watt (1736-1819), Scottish engineer and inventor of the steam engine after whom electrical wattage is named -
20 Murdock (Murdoch), William
[br]b. 21 August 1754 Cumnock, Ayrshire, Scotlandd. 15 November 1839 Handsworth, Birmingham, England[br]Scottish engineer and inventor, pioneer in coal-gas production.[br]He was the third child and the eldest of three boys born to John Murdoch and Anna Bruce. His father, a millwright and joiner, spelled his name Murdock on moving to England. He was educated for some years at Old Cumnock Parish School and in 1777, with his father, he built a "wooden horse", supposed to have been a form of cycle. In 1777 he set out for the Soho manufactory of Boulton \& Watt, where he quickly found employment, Boulton supposedly being impressed by the lad's hat. This was oval and made of wood, and young William had turned it himself on a lathe of his own manufacture. Murdock quickly became Boulton \& Watt's representative in Cornwall, where there was a flourishing demand for steam-engines. He lived at Redruth during this period.It is said that a number of the inventions generally ascribed to James Watt are in fact as much due to Murdock as to Watt. Examples are the piston and slide valve and the sun-and-planet gearing. A number of other inventions are attributed to Murdock alone: typical of these is the oscillating cylinder engine which obviated the need for an overhead beam.In about 1784 he planned a steam-driven road carriage of which he made a working model. He also planned a high-pressure non-condensing engine. The model carriage was demonstrated before Murdock's friends and travelled at a speed of 6–8 mph (10–13 km/h). Boulton and Watt were both antagonistic to their employees' developing independent inventions, and when in 1786 Murdock set out with his model for the Patent Office, having received no reply to a letter he had sent to Watt, Boulton intercepted him on the open road near Exeter and dissuaded him from going any further.In 1785 he married Mary Painter, daughter of a mine captain. She bore him four children, two of whom died in infancy, those surviving eventually joining their father at the Soho Works. Murdock was a great believer in pneumatic power: he had a pneumatic bell-push at Sycamore House, his home near Soho. The pattern-makers lathe at the Soho Works worked for thirty-five years from an air motor. He also conceived the idea of a vacuum piston engine to exhaust a pipe, later developed by the London Pneumatic Despatch Company's railway and the forerunner of the atmospheric railway.Another field in which Murdock was a pioneer was the gas industry. In 1791, in Redruth, he was experimenting with different feedstocks in his home-cum-office in Cross Street: of wood, peat and coal, he preferred the last. He designed and built in the backyard of his house a prototype generator, washer, storage and distribution plant, and publicized the efficiency of coal gas as an illuminant by using it to light his own home. In 1794 or 1795 he informed Boulton and Watt of his experimental work and of its success, suggesting that a patent should be applied for. James Watt Junior was now in the firm and was against patenting the idea since they had had so much trouble with previous patents and had been involved in so much litigation. He refused Murdock's request and for a short time Murdock left the firm to go home to his father's mill. Boulton \& Watt soon recognized the loss of a valuable servant and, in a short time, he was again employed at Soho, now as Engineer and Superintendent at the increased salary of £300 per year plus a 1 per cent commission. From this income, he left £14,000 when he died in 1839.In 1798 the workshops of Boulton and Watt were permanently lit by gas, starting with the foundry building. The 180 ft (55 m) façade of the Soho works was illuminated by gas for the Peace of Paris in June 1814. By 1804, Murdock had brought his apparatus to a point where Boulton \& Watt were able to canvas for orders. Murdock continued with the company after the death of James Watt in 1819, but retired in 1830 and continued to live at Sycamore House, Handsworth, near Birmingham.[br]Principal Honours and DistinctionsRoyal Society Rumford Gold Medal 1808.Further ReadingS.Smiles, 1861, Lives of the Engineers, Vol. IV: Boulton and Watt, London: John Murray.H.W.Dickinson and R.Jenkins, 1927, James Watt and the Steam Engine, Oxford: Clarendon Press.J.A.McCash, 1966, "William Murdoch. Faithful servant" in E.G.Semler (ed.), The Great Masters. Engineering Heritage, Vol. II, London: Institution of Mechanical Engineers/Heinemann.IMcNBiographical history of technology > Murdock (Murdoch), William
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