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101 Messerschmitt, Willi E.
SUBJECT AREA: Aerospace[br]b. 26 June 1898 Frankfurt-am-Main, Germanyd. 17 September 1978 Munich, Germany[br]German aircraft designer noted for successful fighters such as the Bf 109, one of the world's most widely produced aircraft.[br]Messerschmitt studied engineering at the Munich Institute of Tchnology and obtained his degree in 1923. By 1926 he was Chief Designer at the Bayerische Flugzeugwerke in Augsburg. Due to the ban on military aircraft in Germany following the First World War, his early designs included gliders, light aircraft, and a series of high-wing airliners. He began to make a major impact on German aircraft design once Hitler came to power and threw off the shackles of the Treaty of Versailles, which so restricted Germany's armed forces. In 1932 he bought out the now-bankrupt Bayerische Flugzeugwerke, but initially, because of enmity between himself and the German aviation minister, was not invited to compete for an air force contract for a single-engined fighter. However, in 1934 Messerschmitt designed the Bf 108 Taifun, a small civil aircraft with a fighter-like appearance. This displayed the quality of his design and the German air ministry was forced to recognize him. As a result, he unveiled the famous Bf 109 fighter which first flew in August 1935; it was used during the Spanish Civil War in 1936–9, and was to become one of the foremost combat aircraft of the Second World War. In 1938, after several name changes, the company became Messerschmitt Aktien-Gesellschaft (and hence a change of prefix from Bf to Me). During April 1939 a Messerschmitt aircraft broke the world air-speed record at 755.14 km/h (469.32 mph): it was entered in the FAI records as a Bf 109R, but was more accurately a new design designated Me 209V-1.During the Second World War, the 5/70P was progressively improved, and eventually almost 35,000 were built. Other successful fighters followed, such as the twin-engined Me 110 which also served as a bomber and night fighter. The Messerschmitt Me 262 twin-engined jet fighter, the first jet aircraft in the world to enter service, flew during the early years of the war, but it was never given a high priority by the High Command and only a small number were in service when the war ended. Another revolutionary Messerschmitt AG design was the Me 163 Komet, the concept of Professor Alexander Lippisch who had joined Messerschmitt's company in 1939; this was the first rocket-propelled fighter to enter service. It was a small tailless design capable of 880 km/hr (550 mph), but its duration under power was only about 10 minutes and it was very dangerous to fly. From late 1944 onwards it was used to intercept the United States Air Force bombers during their daylight raids. At the other end of the scale, Messerschmitt produced the Me 321 Gigant, a huge transport glider which was towed behind a flight of three Me 110s. Later it was equipped with six engines, but it was an easy target for allied fighters. This was a costly white elephant, as was his high-speed twin-engined Me 210 fighter-bomber project which nearly made his company bankrupt. Nevertheless, he was certainly an innovator and was much admired by Hitler, who declared that he had "the skull of a genius", because of the Me 163 Komet rocket-powered fighter and the Me 262.At the end of the war Messerschmitt was detained by the Americans for two years. In 1952 Messerschmitt became an aviation adviser to the Spanish government, and his Bf109 was produced in Spain as the Hispano Buchon for a number of years and was powered by Rolls-Royce Merlin engines. A factory was also constructed in Egypt to produce aircraft to Messerschmitt's designs. His German company, banned from building aircraft, produced prefabricated houses, sewing machines and, from 1953 to 1962, a series of bubble-cars: the KR 175 (1953–55) and the KR 200 (1955–62) were single-cylinder three-wheeled bubble-cars, and the Tiger (1958–62) was a twin-cylinder, 500cc four-wheeler. In 1958 Messerschmitt resumed aircraft construction in Germany and later became the Honorary Chairman of the merged Messerschmitt-Bölkow-Blohm company (now part of the Franco-German Eurocopter company).[br]Further Readingvan Ishoven, 1975, Messerschmitt. Aircraft Designer, London. J.Richard Smith, 1971, Messerschmitt. An Air-craft Album, London.Anthony Pritchard, 1975, Messerschmitt, London (describes Messerschmitt aircraft).JDS / CMBiographical history of technology > Messerschmitt, Willi E.
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102 Paul, Lewis
SUBJECT AREA: Textiles[br]d. April 1759 Brook Green, London, England[br]English inventor of hand carding machines and partner with Wyatt in early spinning machines.[br]Lewis Paul, apparently of French Huguenot extraction, was quite young when his father died. His father was Physician to Lord Shaftsbury, who acted as Lewis Paul's guardian. In 1728 Paul made a runaway match with a widow and apparently came into her property when she died a year later. He must have subsequently remarried. In 1732 he invented a pinking machine for making the edges of shrouds out of which he derived some profit.Why Paul went to Birmingham is unknown, but he helped finance some of Wyatt's earlier inventions. Judging by the later patents taken out by Paul, it is probable that he was the one interested in spinning, turning to Wyatt for help in the construction of his spinning machine because he had no mechanical skills. The two men may have been involved in this as early as 1733, although it is more likely that they began this work in 1735. Wyatt went to London to construct a model and in 1736 helped to apply for a patent, which was granted in 1738 in the name of Paul. The patent shows that Paul and Wyatt had a number of different ways of spinning in mind, but contains no drawings of the machines. In one part there is a description of sets of rollers to draw the cotton out more finely that could have been similar to those later used by Richard Arkwright. However, it would seem that Paul and Wyatt followed the other main method described, which might be called spindle drafting, where the fibres are drawn out between the nip of a pair of rollers and the tip of the spindle; this method is unsatisfactory for continuous spinning and results in an uneven yarn.The spinning venture was supported by Thomas Warren, a well-known Birmingham printer, Edward Cave of Gentleman's Magazine, Dr Robert James of fever-powder celebrity, Mrs Desmoulins, and others. Dr Samuel Johnson also took much interest. In 1741 a mill powered by two asses was equipped at the Upper Priory, Birmingham, with, machinery for spinning cotton being constructed by Wyatt. Licences for using the invention were sold to other people including Edward Cave, who established a mill at Northampton, so the enterprise seemed to have great promise. A spinning machine must be supplied with fibres suitably prepared, so carding machines had to be developed. Work was in hand on one in 1740 and in 1748 Paul took out another patent for two types of carding device, possibly prompted by the patent taken out by Daniel Bourn. Both of Paul's devices were worked by hand and the carded fibres were laid onto a strip of paper. The paper and fibres were then rolled up and placed in the spinning machine. In 1757 John Dyer wrote a poem entitled The Fleece, which describes a circular spinning machine of the type depicted in a patent taken out by Paul in 1758. Drawings in this patent show that this method of spinning was different from Arkwright's. Paul endeavoured to have the machine introduced into the Foundling Hospital, but his death in early 1759 stopped all further development. He was buried at Paddington on 30 April that year.[br]Bibliography1738, British patent no. 562 (spinning machine). 1748, British patent no. 636 (carding machine).1758, British patent no. 724 (circular spinning machine).Further ReadingG.J.French, 1859, The Life and Times of Samuel Crompton, London, App. This should be read in conjunction with R.L.Hills, 1970, Power in the Industrial Revolution, Manchester, which shows that the roller drafting system on Paul's later spinning machine worked on the wrong principles.A.P.Wadsworth and J.de L.Mann, 1931, The Cotton Trade and Industrial Lancashire, 1600–1780, Manchester (provides good coverage of the partnership of Paul and Wyatt and the early mills).E.Baines, 1835, History of the Cotton Manufacture in Great Britain, London (this publication must be mentioned, but is now out of date).A.Seymour-Jones, 1921, "The invention of roller drawing in cotton spinning", Transactions of the Newcomen Society 1 (a more modern account).RLH -
103 دعا (إلى)
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office. \ دَعَا إلى حَفْلَةٍ \ entertain: to receive (sb.) as a guest: We entertained some friends to dinner. We’re too busy to entertain very often. -
104 advocate
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office. -
105 ask
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office. -
106 call
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office. -
107 invite
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office. -
108 summon
دَعَا (إلى) \ advocate: to speak in support or favour of (an idea, a course of action, etc.): Most doctors advocate regular exercise as a way of keeping healthy. ask: to invite: We asked him to dinner. call: to name or describe: My son is called Richard. She called me a fool, ask sb. to come Call the doctor. invite: to ask sb. politely (to be a guest, to do a favour, etc.): We invited him to dinner. They invited him to perform the ceremony. summon: to call officially: The headmaster summoned me to his office.
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