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21 entraîner
entraîner° [ɑ̃tʀene]➭ TABLE 11. transitive verbb. ( = causer) to bring about ; ( = impliquer) to entailc. ( = emmener) [+ personne] to taked. ( = influencer) to lead• se laisser entraîner par ses camarades to let o.s. be led by one's friendse. [rythme] to carry along ; [passion, enthousiasme] to carry awayf. ( = charrier) [+ objets arrachés] to carry along ; ( = mouvoir) [+ machine] to drive2. reflexive verb* * *ɑ̃tʀene
1.
1) ( provoquer) to lead to2) ( emporter) [courant, rivière] to carry [something/somebody] awayil a entraîné quelqu'un/quelque chose dans sa chute — lit, fig he dragged somebody/something down with him
3) ( conduire) to take [personne]entraîner quelqu'un à faire quelque chose — [personne] to make somebody do something; [circonstances] to lead somebody to do something
5) ( former) to train, to coach [sportif] (à for); to train [cheval, soldat] (à for)6) ( actionner) [moteur] to drive [machine]
2.
s'entraîner verbe pronominal1) ( se former) [sportif, soldats] to train (à for)s'entraîner au maniement des armes/au tir — to practise [BrE] handling weapons/shooting
2) ( s'exercer) to prepare oneself ( à quelque chose for something); to train oneself ( à faire to do)3) ( s'encourager) to encourage each other ( à faire to do)* * *ɑ̃tʀene vt1) (= tirer) [wagons] to pull2) (= charrier) [rivière, courant] to carry along, to pull along3) (= actionner) [mécanisme, engrenage] to drive4) (= emmener) [personne] to drag5) (= mener à l'assaut) to lead6) (= influencer) to leadIl se laisse facilement entraîner par les autres. — He's easily led.
entraîner qn à faire qch (= inciter) — to lead sb to do sth
7) SPORT, [footballeur, athlète] to trainIl entraîne l'équipe de France depuis cinq ans. — He's been training the French team for five years.
8) (= impliquer) to entail, to involveUn mariage entraîne beaucoup de dépenses. — A wedding entails a lot of expense., A wedding involves a lot of expense.
9) (= causer) to lead to, to bring aboutCela risque d'entraîner la chute du gouvernement. — It could lead to the fall of the government., It could bring about the fall of the government.
Cet incident a entraîné sa démission. — This incident led to his resignation.
* * *entraîner verb table: aimerA vtr1 ( provoquer) [cause, problème, erreur] to lead to [expansion, mécontentement, dépenses, perturbations]; la récession entraîne le chômage recession leads to unemployment; une panne a entraîné l'arrêt de la production a breakdown brought production to a standstill;2 ( emporter) [courant, rivière] to carry [sth] away [barque, épave, nageur]; l'avalanche a tout entraîné sur son passage the avalanche swept away everything in its path; il a entraîné qn/qch dans sa chute lit, fig he dragged sb/sth down with him;3 ( conduire) to take [personne]; entraîner qn sur la piste de danse to take sb onto the dance floor; entraîner Paul à l'écart pour lui parler to take Paul aside to speak to him; entraîner ses invités vers le buffet to usher one's guests to the buffet; il a entraîné son amie dans sa fugue he took his girlfriend with him when he ran away; entraîner qn à faire qch [personne] to make sb do sth; [circonstances] to lead sb to do sth; ce sont ses camarades qui l'ont entraîné his friends dragged him into it;4 fig ( stimuler) to carry [sb] away [personne, groupe]; ses idées novatrices ont entraîné les foules the masses were carried away by his innovative ideas;5 ( former) to train, to coach [athlète, équipe, sportif]; to train [cheval, soldat]; entraîner qn au combat/au saut en hauteur to train sb for combat/for the high jump; un cheval/joueur bien entraîné a well-trained horse/player;6 ( actionner) [mécanisme, moteur, piston] to drive [machine, roue, turbine].B s'entraîner vpr1 ( se former) [sportif, équipe, soldats] to train; il s'entraîne tous les jours à la piscine he trains every day at the swimming pool; s'entraîner au javelot/au saut en longueur to train for the javelin/the longjump; s'entraîner au maniement des armes/tir to practiseGB handling weapons/shooting;2 ( s'exercer) to prepare oneself (à qch for sth); to train oneself (à faire to do); il s'entraîne au débat télévisé he's preparing himself for televised debates; un acteur qui s'entraîne à mimer qn an actor who is training himself to mimic sb; il s'entraîne devant son miroir he practisesGB in front of his mirror;3 ( s'encourager) [adolescents, délinquants] to encourage each other; des enfants qui s'entraînent à faire des bêtises children encouraging each other to do ou egging each other on to do stupid things.[ɑ̃trene] verbe transitif1. [emporter] to carry ou to sweep along (separable)cette discussion nous entraînerait trop loin that discussion would carry ou take us too far[actionner - bielle] to drive2. [conduire] to drag (along)ce sont les grands qui les entraînent à faire des bêtises it's the older children who encourage them to be naughtya. (sens propre) to pull ou to drag somebody down in one's fall[cheval] to train————————s'entraîner verbe pronominal intransitifs'entraîner pour les ou en vue des jeux Olympiques to be in training ou to train for the Olympic Gamesa. [généralement] to teach oneself to do something -
22 Reichenbach, Georg Friedrich von
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering, Photography, film and optics, Public utilities[br]b. 24 August 1772 Durlach, Baden, Germanyd. 21 May 1826 Munich, Germany[br]German engineer.[br]While he was attending the Military School at Mannheim, Reichenbach drew attention to himself due to the mathematical instruments that he had designed. On the recommendation of Count Rumford in Munich, the Bavarian government financed a two-year stay in Britain so that Reichenbach could become acquainted with modern mechanical engineering. He returned to Mannheim in 1793, and during the Napoleonic Wars he was involved in the manufacture of arms. In Munich, where he was in the service of the Bavarian state from 1796, he started producing precision instruments in his own time. His basic invention was the design of a dividing machine for circles, produced at the end of the eighteenth century. The astronomic and geodetic instruments he produced excelled all the others for their precision. His telescopes in particular, being perfect in use and of solid construction, soon brought him an international reputation. They were manufactured at the MathematicMechanical Institute, which he had jointly founded with Joseph Utzschneider and Joseph Liebherr in 1804 and which became a renowned training establishment. The glasses and lenses were produced by Joseph Fraunhofer who joined the company in 1807.In the same year he was put in charge of the technical reorganization of the salt-works at Reichenhall. After he had finished the brine-transport line from Reichenhall to Traunstein in 1810, he started on the one from Berchtesgaden to Reichenhall which was an extremely difficult task because of the mountainous area that had to be crossed. As water was the only source of energy available he decided to use water-column engines for pumping the brine in the pipes of both lines. Such devices had been in use for pumping purposes in different mining areas since the middle of the eighteenth century. Reichenbach knew about the one constructed by Joseph Karl Hell in Slovakia, which in principle had just been a simple piston-pump driven by water which did not work satisfactorily. Instead he constructed a really effective double-action water-column engine; this was a short time after Richard Trevithick had constructed a similar machine in England. For the second line he improved the system and built a single-action pump. All the parts of it were made of metal, which made them easy to produce, and the pumps proved to be extremely reliable, working for over 100 years.At the official opening of the line in 1817 the Bavarian king rewarded him generously. He remained in the state's service, becoming head of the department for roads and waterways in 1820, and he contributed to the development of Bavarian industry as well as the public infrastructure in many ways as a result of his mechanical skill and his innovative engineering mind.[br]Further ReadingBauernfeind, "Georg von Reichenbach" Allgemeine deutsche Biographie 27:656–67 (a reliable nineteenth-century account).W.Dyck, 1912, Georg v. Reichenbach, Munich.K.Matschoss, 1941, Grosse Ingenieure, Munich and Berlin, 3rd edn. 121–32 (a concise description of his achievements in the development of optical instruments and engineering).WKBiographical history of technology > Reichenbach, Georg Friedrich von
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23 power
<tech.gen> (strength; e.g. of a machine) ■ Stärke f<el> ■ Energie f prakt(pwr) <mvhcl.mot> (of automotive engines; e.g. 160 kW \@ 5800/min) ■ Leistung f ; Motorleistung f formISo 13666 < opt> (capacity of a lens tp change direction of wavefronts) ■ Wirkung f DIN EN ISO 1366(P) < phys> ■ Leistung f (P)vt <tech.gen> ■ antreiben vtvt <el> ■ speisen vt -
24 group
совокупность, группа || группировать- associating groups of information
- blade group
- classification group
- coordinated axis group
- dedicated group of machines
- development group
- innovative group
- machine group
- NC programming group
- OEM development group
- safety group
- tool cost analysis group
- traffic group
- work groupEnglish-Russian dictionary of mechanical engineering and automation > group
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25 work
1) работа; труд; действие; функционирование2) обработка3) обрабатываемая заготовка; обрабатываемая деталь; обрабатываемое изделие4) механизм5) конструкция6) мн. ч. завод; фабрика; мастерские; технические сооружения; строительные работы7) мн. ч. работающие части механизма, подвижные органы механизма8) работать; обрабатывать9) действовать, двигаться, поворачиваться ( о подвижных частях механизмов)10) коробиться•work performed with materials in a smaller quantity — работа, выполненная с недостаточным использованием материалов
work performed without the necessary diligence — работа, выполненная небрежно
work which is not in accordance with specifications — работа, не соответствующая техническим требованиям
work which is not in accordance with the requirements of the engineer — работа, не отвечающая требованиям инженера
to work down — 1) осаживать ( вниз); оседать 2) обрабатывать на меньший размер
to work in — вделывать, вмонтировать
to work into — углубляться во что-либо, уходить внутрь
to work off — 1) соскакивать, соскальзывать ( во время работы) 2) снимать (напр. стружку)
to work on — действовать на что-либо, оказывать влияние на что-либо
to work out — 1) разрабатывать (план, проект) 2) вырабатывать (что-либо) из чего-либо (напр. вытачивать, выстрагивать, выфрезеровывать) 3) выскакивать, выпадать во время работы
to work over — обрабатывать вторично, перерабатывать, подвергать переработке
to work upon — действовать на что-либо, оказывать влияние на что-либо
- work executed - work in process - work of acceleration - work of deformation - work of ideal cycle - work of resistance - work on arbour - works under way - access to works - actual progress of works - amendment of the date of completion of works - amount of the executed works - applied work - asphalt work - assessment of works - auxiliary work - bank work - bargain work - beat-cob work - betterment work - black and white work - bluff work - bonus work - bosh brick work - branch work - branched work - bright work - carpenter's work - cast steel work - cessation of works - chased work - check of works - checking of works - chequer work - chequered work - cindering work - civil works - civil and erection works - clay work - clearing work - commencement of works - completed works - completion of works - concrete work - diversion work - condensing works - construction works - consumed work - continuous execution of works - contract works - cost of works - cost of uncovering works - covered-up works - date of commencement of works - date of completion of works - day-to-day work - day wage work - dead work - defective works - delay in completion of works - delayed completion of works - demolition works - description of works - design and survey works - desilting works - diaper work of bricklaying - drainage work - dredge work - dressing works - drove work - earth works - effective work - embossed work - emergency works - engineering works - erecting works - erection works - examination of works - excavation works - execution of works - expected period of works - extension of the time for completion of works - external work - face work - fascine work - field works - finely finished work - finishing work - fitter's works - flat trellis work - float work - forming work - forthcoming works - frosted rustic work - gauge work - gauged work - geologic works - geological works - grading works - gunite work - heading work - health work - hot work - hydro-meteorologic works - hydro-meteorological works - inadequate progress of works - incomplete lattice work - indicated work - inlaid work - inspection of works - installation work - intake works - irrigation works - jack works - jobbing work - joggle work - ladder work - line work - link work - locksmith's work - machine work - main works - maintenance work - management of works - maritime works - metal work - milling work - motion work - multiple lattice work - nature of works - neat work - negative work - night work - no-load work - odd works - on the site works - order of execution of works - outlet work - outstanding works - overhead works - panel work - partially completed works - part of works - paternoster work - period of works - period of execution of works - permanent works - pilot-scale work - plane frame work - planer work - pneumatic work - port work - portion of works - pottery work - precision work - preliminary works - preparatory works - pressure cementing work - programme of works - progress of works - proper execution of works - prospecting works - public works - pump works - quantity of works - rag work - R and D work - random work - range work - reclamation work - recoverable-strain work - recuperated work - reflected work - reliability of works - relief work - remedial works - repair work - repairing work - required work - research work - resumption of works - retaining works - reticulated work - right of access to works - river training works - rustic work - safety of works - schedule of works - scope of work - shaper work - sheet metal work - shift work - smith and founder work - spillway works - starting work - step-by-step check of works - step-by-step checking of works - stick and rag work - stoppage of works - subcontract works - submarine work - substituted works - sufficiency of works - supervision for works - supervision for of works - survey work - survey and research works - suspension of works - taking over of works - task work - temporary work - test work - test-hole work - three-coat work - through-carved work - time for completion of works - timely completion of works - tool work - topiary work - topographic works - topographical works - track work - treatment works - trellis work - trench work - trestle work - turning work - uncompleted works - uncovering of works - upon completion of works - variations in works - variations of works - volume of works - wiring work - X-ray workto complete works (in the time stipulated in the contract) — завершать работы (в срок, оговорённый в контракте)
* * *1. работа2. изделие3. обработка4. возводимый объект (строительства) ( по подрядному договору); конструкция, сооружение5. работа, мощность6. pl сооружение, сооружения7. pl завод, фабрика, мастерскиеwork above ground — наземные работы ( в отличие от подземных и подводных); работы, производимые на поверхности земли
work below ground ( level) — подземные работы
work carried out on site — работы, выполненные на стройплощадке
work done in sections — работа, выполненная отдельными секциями [частями]
work in open excavations — работы в открытых выемках [горных выработках]
work in progress — (строительные) работы в стадии выполнения, выполняемые [производимые] (строительные) работы; объект в стадии строительства
work in water — работы, производимые в воде [под водой]
work near water — работы, производимые близ водоёмов или рек
- work of deformationwork on schedule — работы в процессе выполнения ( по графику); работы, предусмотренные планом [графиком]
- work of external forces
- work of internal forces
- above-ground works
- additional work
- agricultural works
- alteration work
- ashlar work
- auxiliary work
- avalanche baffle works
- axed work
- backfill work
- backing masonry work
- bag work
- bench work
- block work
- brewery works
- brick work
- broken-color work
- brush work
- building work
- building site works
- carcass work
- carpenter's work
- cement works
- chemical production works
- civil engineering work
- coast protection works
- cob work
- completed work
- complicated building work
- concrete work
- concrete block masonry work
- concrete masonry work
- constructional work
- construction work
- continuous shift work
- contract work
- coursed work
- crib work
- day work
- dead work
- defective work
- defence works
- deformation work
- demolition work
- development work
- diver's works
- diversion works
- donkey work
- drainage works
- earth work
- earth-moving work
- elastic work of a material
- electric work
- electricity production works
- emergency work
- enclosed construction works
- engineering works
- erection work
- erosion protection works
- excavation works
- experimental work
- external work
- extra work
- facing work
- factory work
- fascine work
- finishing work
- finish work
- floating construction works
- flood-control works
- flood-protection works
- floor work
- floor-and-wall tiling work
- floor covering work
- food industry production work
- foundation work
- funerary works
- further day's work
- gas works
- gauged work
- glazed work
- glazier's work
- half-plain work
- hammered work
- hand work
- handy work
- heat insulation work
- heavy work
- highly mechanized work
- hot work
- in-fill masonry work
- innovative construction work
- insulating work
- intake works
- internal work in the system
- ironmongery work
- joinery work
- land retention works
- landslide protection works
- loading works
- manual work
- marine works
- metallurgical processing works
- night work
- nonconforming work
- office work
- off-the-site work
- one-coat work
- open-air intake works
- open construction works
- ornamental works
- ornate work
- outlet works
- overhang work
- overhead work
- permanent works up to ground level
- petroleum extraction works
- piece work
- pitched work
- plaster work
- plumbing work
- power production works
- precast works
- production works
- promotion work
- protection works
- protective works
- public works
- random ashlar work
- refurbishment work
- refuse disposal works
- refuse incineration works
- regulation works
- reinforced concrete work
- research work
- reticulated work
- road transport works
- roof tiling work
- rubble ashlar masonry work
- sanitary works
- sea defence works
- sediment exclusion works
- sewage disposal works
- single construction works
- smillage-axed work
- solid plaster work
- steel construction works
- steel works
- steel plate work
- structural restoration work
- surface transport works
- temporary works
- textile work
- three-coat work
- tiling work
- training works
- transport works
- treatment works
- two-coat work
- underground work
- underwater work
- unloading works
- vermiculated work
- virtual work
- waste disposal works
- water works
- water treatment works -
26 new
1. n новое2. a новый; ранее не существовавшийnew members of the UN — новые члены ООН, государства, только что принятые в ООН
new arrival — только что прибывший ; новый приезжий
new growth — новообразование, опухоль
3. a новый, только что обнаруженный или открытый4. a новый, не бывший в употребленииnew development — новшество; новая разработка
5. a современный, новейшийNew Greek — новогреческий язык; современный греческий язык
6. a пренебр. часто новоявленный, недавнийI can clock up 100 miles an hour in my new car — на моей новой машине я могу показать скорость 100 миль в час
7. a незнакомыйI am new to Moscow — я недавно в Москве, я ещё плохо знаю Москву
he was new about the house — он ещё не привык к дому, он ещё не освоился с квартирой
8. a неопытный, новыйnew chum — новый сотрудник ; новенький, новичок
9. a иной, другой; обновлённыйto lead a new life — изменить образ жизни, начать иную жизнь
10. a ещё один, ещё несколько; дополнительный, новыйnew trial — новое рассмотрение дела, пересмотр дела
11. a свежийspickandspan new — совершенно новый, абсолютно свежий
12. a молодой13. a как компонент сложных слов ново-, свеже-, только чтоnew-caged beast — зверь, только что посаженный в клетку
new departure — новая линия ; новая инициатива, почин, новшество
new lease on life — возрождение надежд, возвращение жизненных сил
Mary has taken a new lease of life since she became interested in gardening — заинтересовавшись садоводством, Мери воспрянула духом
14. adv недавно, только чтоnew Australian — иммигрант, недавно поселившийся в Австралии
15. adv заново, вновьСинонимический ряд:1. additional (adj.) added; additional; another; else; extra; farther; further; increased; more; other; supplementary2. current (adj.) current; faddish; fashionable; latest; modern; modish; popular3. different (adj.) brand-new; different; dissimilar; distinct; unlike4. fresh (adj.) bizarre; fresh; innovative; inventive; just out; late; modernistic; neoteric; newfangled; new-fashioned; new-sprung; novel; original; recent; uncontaminated; unique; unprecedented; unspoiled; unused; unusual5. present (adj.) contemporary; existent; existing; present; present-day6. pristine (adj.) pristine; untouched; virgin7. refreshed (adj.) refreshed; regenerated; reinvigorated; renewed; revived8. unfamiliar (adj.) strange; unaccustomed; unfamiliar9. untrained (adj.) incompetent; inexperienced; unseasoned; unskilled; untrained10. recently (other) afresh; anew; freshly; lately; newly; of late; recentlyАнтонимический ряд:antique; archaic; deteriorated; obsolete; old; old-fashioned; outmoded; prehistoric; primeval; primordial; stale; used; worn -
27 Breguet, Louis
SUBJECT AREA: Aerospace[br]b. 2 January 1880 Paris, Franced. 4 May 1955 Paris, France[br]French aviation pioneer who built a helicopter in 1907 and designed many successful aircraft.[br]The Breguet family had been manufacturing fine clocks since before the French Revolution, but Louis Breguet and his brother Jacques used their mechanical skills to produce a helicopter, or "gyroplane" as they named it. It was a complex machine with four biplane rotors (i.e. thirty-two lifting surfaces). Louis Breguet had carried out many tests to determine the most suitable rotor design. The Breguet brothers were assisted by Professor Charles Richet and the Breguet-Richet No. 1 was tested in September 1907 when it succeeded in lifting itself, and its pilot, to a height of 1.5 metres. Unfortunately, the gyroplane was rather unstable and four helpers had to steady it; consequently, the flight did not qualify as a "free" flight. This was achieved two months later, also in France, by Paul Cornu who made a 20-second free flight.Louis Breguet turned his attention to aeroplane design and produced a tractor biplane when most other biplanes followed the Wright brothers' layout with a forward elevator and pusher propeller. The Breguet I made quite an impression at the 1909 Reims meeting, but the Breguet IV created a world record the following year by carrying six people. During the First World War the Breguet Type 14 bomber was widely used by French and American squadrons. Between the First and Second World Wars a wide variety of designs were produced, including flying boats and another helicopter, the Breguet- Dorand Gyroplane which flew for over one hour in 1936. The Breguet company survived World War II and in the late 1940s developed a successful four-engined airliner/transport, the Deux-Ponts, which had a bulbous double-deck fuselage.Breguet was an innovative designer, although his designs were functional rather than elegant. He was an early advocate of metal construction and developed an oleo- (oil-spring) undercarriage leg.[br]Bibliography1925, Le Vol à voile dynamique des oiseaux. Analyse des effets des pulsations du vent sur la résultante aérodynamique moyenne d'un planeur, Paris.Further ReadingP.Faure, 1938, Louis Breguet, Paris (biography).C.H.Gibbs-Smith, 1965, The Invention of the Aeroplane 1799–1909, London (provides a careful analysis of Breguet's early aircraft).JDS -
28 Moulton, Alexander
[br]b. 9 April 1920 Stratford-on-Avon[br]English inventor of vehicle suspension systems and the Moulton bicycle.[br]He spent his childhood at The Hall in Bradfordon-Avon. He was educated at Marlborough College, and in 1937 was apprenticed to the Sentinel Steam Wagon Company of Shrewsbury. About that same time he went to King's College, Cambridge, where he took the Mechanical Sciences Tripos. It was then wartime, and he did research on aero-engines at the Bristol Aeroplane Company, where he became Personal Assistant to Sir Roy Fedden. He left Bristol's in 1945 to join his family firm, Spencer \& Moulton, of which he eventually became Technical Director and built up the Research Department. In 1948 he invented his first suspension unit, the "Flexitor", in which an inner shaft and an outer shell were separated by an annular rubber body which was bonded to both.In 1848 his great-grandfather had founded the family firm in an old woollen mill, to manufacture vulcanized rubber products under Charles Goodyear's patent. The firm remained a family business with Spencer's, consultants in railway engineering, until 1956 when it was sold to the Avon Rubber Company. He then formed Moulton Developments to continue his work on vehicle suspensions in the stables attached to The Hall. Sponsored by the British Motor Corporation (BMC) and the Dunlop Rubber Company, he invented a rubber cone spring in 1951 which was later used in the BMC Mini (see Issigonis, Sir Alexander Arnold Constantine): by 1994 over 4 million Minis had been fitted with these springs, made by Dunlop. In 1954 he patented the Hydrolastic suspension system, in which all four wheels were independently sprung with combined rubber springs and damper assembly, the weight being supported by fluid under pressure, and the wheels on each side being interconnected, front to rear. In 1962 he formed Moulton Bicycles Ltd, having designed an improved bicycle system for adult use. The conventional bicycle frame was replaced by a flat-sided oval steel tube F-frame on a novel rubber front and rear suspension, with the wheel size reduced to 41 cm (16 in.) with high-pressure tyres. Raleigh Industries Ltd having refused his offer to produce the Moulton Bicycle under licence, he set up his own factory on his estate, producing 25,000 bicycles between 1963 and 1966. In 1967 he sold out to Raleigh and set up as Bicycle Consultants Ltd while continuing the suspension development of Moulton Developments Ltd. In the 1970s the combined firms employed some forty staff, nearly 50 per cent of whom were graduates.He won the Queen's Award for Industry in 1967 for technical innovation in Hydrolastic car suspension and the Moulton Bicycle. Since that time he has continued his innovative work on suspensions and the bicycle. In 1983 he introduced the AM bicycle series of very sophisticated space-frame design with suspension and 43 cm (17 in.) wheels; this machine holds the world speed record fully formed at 82 km/h (51 mph). The current Rover 100 and MGF use his Hydragas interconnected suspension. By 1994 over 7 million cars had been fitted with Moulton suspensions. He has won many design awards and prizes, and has been awarded three honorary doctorates of engineering. He is active in engineering and design education.[br]Principal Honours and DistinctionsQueen's Award for Industry 1967; CBE; RDI. Fellow of the Royal Academy of Engineering.Further ReadingP.R.Whitfield, 1975, Creativity in Industry, London: Penguin Books.IMcN -
29 Otis, Elijah Graves
SUBJECT AREA: Architecture and building[br]b. 3 August 1811 Halifax, Vermont, USAd. 8 April 1861 Yonkers, New York, USA[br]American mechanic and inventor of the safety passenger elevator.[br]Otis was educated in public schools and worked in a variety of jobs in the trucking and construction industries as well as in a machine shop, a carriage makers, a grist mill, and a saw mill and in a bedstead factory. It was when supervisor of construction of a new bedstead factory at Yonkers in 1852 that he developed the innovative safety features of an elevator that was to be the foundation of his later success. If the ropes or cables of a hoist should break, springs would force pawls on the lift cage to engage the ratcheted guide rails fitted into the sides of the shaft and so stop the lift. In 1853 he was planning to leave his job to join the California Gold Rush but representatives of two New York City firms who had seen his Safety Elevator and were impressed with the safety devices requested that he make them replicas. He purchased space in the Yonkers plant and began manufacture of the lifts. Demand was small at first until in 1854 he exhibited at the American Institute Fair in New York City with an impressive performance. Standing on top of the lift cage, he ordered the rope supporting it to be cut. The safety pawls engaged and the cage stopped its downward movement. From then on orders gradually increased and in 1857 he installed the first safety lift for passengers in the Haughtwout Store in New York City. The invention immediately became popular and started a revolution in architecture and the construction industry, leading to the design and building of skyscrapers, as previously buildings were limited to six or seven storeys, because of the stairs people had to climb. Otis patented several other devices, the most important of which was for a steam elevator which established the future of the Otis Elevator Company. He died at Yonkers in 1861, leaving his business to his sons.[br]Further ReadingScribner's and Webster's Dictionaries of Biography.IMcN / DY
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