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101 Gramme, Zénobe Théophile
[br]b. 4 April 1826 Jehay-Bodignée, Belgiumd. 20 January 1901 Bois de Colombes, Paris, France[br]Belgian engineer whose improvements to the dynamo produced a machine ready for successful commercial exploitation.[br]Gramme trained as a carpenter and showed an early talent for working with machinery. Moving to Paris he found employment in the Alliance factory as a model maker. With a growing interest in electricity he left to become an instrument maker with Heinrich Daniel Rühmkorff. In 1870 he patented the uniformly wound ring-armature dynamo with which his name is associated. Together with Hippolyte Fontaine, in 1871 Gramme opened a factory to manufacture his dynamos. They rapidly became a commercial success for both arc lighting and electrochemical purposes, international publicity being achieved at exhibitions in Vienna, Paris and Philadelphia. It was the realization that a Gramme machine was capable of running as a motor, i.e. the reversibility of function, that illustrated the entire concept of power transmission by electricity. This was first publicly demonstrated in 1873. In 1874 Gramme reduced the size and increased the efficiency of his generators by relying completely on the principle of self-excitation. It was the first practical machine in which were combined the features of continuity of commutation, self-excitation, good lamination of the armature core and a reasonably good magnetic circuit. This dynamo, together with the self-regulating arc lamps then available, made possible the innumerable electric-lighting schemes that followed. These were of the greatest importance in demonstrating that electric lighting was a practical and economic means of illumination. Gramme also designed an alternator to operate Jablochkoff candles. For some years he took an active part in the operations of the Société Gramme and also experimented in his own workshop without collaboration, but made no further contribution to electrical technology.[br]Principal Honours and DistinctionsKnight Commander, Order of Leopold of Belgium 1897. Chevalier de la Légion d'honneur. Chevalier, Order of the Iron Crown, Austria.Bibliography9 June 1870, British patent no. 1,668 (the ring armature machine).1871, Comptes rendus 73:175–8 (Gramme's first description of his invention).Further ReadingW.J.King, 1962, The Development of Electrical Technology in the 19th Century, Washington, DC: Smithsonian Institution, Paper 30, pp. 377–90 (an extensive account of Gramme's machines).S.P.Thompson, 1901, obituary, Electrician 66: 509–10.C.C.Gillispie (ed.), 1972, Dictionary of Scientific Biography, Vol. V, New York, p. 496.GWBiographical history of technology > Gramme, Zénobe Théophile
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102 Grant, George Barnard
SUBJECT AREA: Electronics and information technology[br]b. 21 December 1849 Farmingdale, Gardiner, Maine, USAd. 16 August 1917 Pasadena, California, USA[br]American mechanical engineer and inventor of Grant's Difference Engine.[br]George B.Grant was descended from families who came from Britain in the seventeenth century and was educated at the Bridgton (Maine) Academy, the Chandler Scientific School of Dartmouth College and the Lawrence Scientific School of Harvard College, where he graduated with the degree of BS in 1873. As an undergraduate he became interested in calculating machines, and his paper "On a new difference engine" was published in the American Journal of Science in August 1871. He also took out his first patents relating to calculating machines in 1872 and 1873. A machine of his design known as "Grant's Difference Engine" was exhibited at the Centennial Exposition in Philadelphia in 1876. Similar machines were also manufactured for sale; being sturdy and reliable, they did much to break down the prejudice against the use of calculating machines in business. Grant's work on calculating machines led to a requirement for accurate gears, so he established a machine shop for gear cutting at Charlestown, Massachusetts. He later moved the business to Boston and incorporated it under the name of Grant's Gear Works Inc., and continued to control it until his death. He also established two other gear-cutting shops, the Philadelphia Gear Works Inc., which he disposed of in 1911, and the Cleveland Gear Works Inc., which he also disposed of after a few years. Grant's commercial success was in connection with gear cutting and in this field he obtained several patents and contributed articles to the American Machinist. However, he continued to take an interest in calculating machines and in his later years carried out experimental work on their development.[br]Bibliography1871, "On a new difference engine", American Journal of Science (August). 1885, Chart and Tables for Bevel Gears.1885, A Handbook on the Teeth of Gear Wheels, Boston, Mass.1891, Odontics, or the Theory and Practice of the Teeth of Gears, Lexington, Mass.Further ReadingR.S.Woodbury, 1958, History of the Gear-cutting Machine, Cambridge, Mass, (describes his gear-cutting machine).RTS -
103 Harrison, John
[br]b. 24 March 1693 Foulby, Yorkshire, Englandd. 24 March 1776 London, England[br]English horologist who constructed the first timekeeper of sufficient accuracy to determine longitude at sea and invented the gridiron pendulum for temperature compensation.[br]John Harrison was the son of a carpenter and was brought up to that trade. He was largely self-taught and learned mechanics from a copy of Nicholas Saunderson's lectures that had been lent to him. With the assistance of his younger brother, James, he built a series of unconventional clocks, mainly of wood. He was always concerned to reduce friction, without using oil, and this influenced the design of his "grasshopper" escapement. He also invented the "gridiron" compensation pendulum, which depended on the differential expansion of brass and steel. The excellent performance of his regulator clocks, which incorporated these devices, convinced him that they could also be used in a sea dock to compete for the longitude prize. In 1714 the Government had offered a prize of £20,000 for a method of determining longitude at sea to within half a degree after a voyage to the West Indies. In theory the longitude could be found by carrying an accurate timepiece that would indicate the time at a known longitude, but the requirements of the Act were very exacting. The timepiece would have to have a cumulative error of no more than two minutes after a voyage lasting six weeks.In 1730 Harrison went to London with his proposal for a sea clock, supported by examples of his grasshopper escapement and his gridiron pendulum. His proposal received sufficient encouragement and financial support, from George Graham and others, to enable him to return to Barrow and construct his first sea clock, which he completed five years later. This was a large and complicated machine that was made out of brass but retained the wooden wheelwork and the grasshopper escapement of the regulator clocks. The two balances were interlinked to counteract the rolling of the vessel and were controlled by helical springs operating in tension. It was the first timepiece with a balance to have temperature compensation. The effect of temperature change on the timekeeping of a balance is more pronounced than it is for a pendulum, as two effects are involved: the change in the size of the balance; and the change in the elasticity of the balance spring. Harrison compensated for both effects by using a gridiron arrangement to alter the tension in the springs. This timekeeper performed creditably when it was tested on a voyage to Lisbon, and the Board of Longitude agreed to finance improved models. Harrison's second timekeeper dispensed with the use of wood and had the added refinement of a remontoire, but even before it was tested he had embarked on a third machine. The balance of this machine was controlled by a spiral spring whose effective length was altered by a bimetallic strip to compensate for changes in temperature. In 1753 Harrison commissioned a London watchmaker, John Jefferys, to make a watch for his own personal use, with a similar form of temperature compensation and a modified verge escapement that was intended to compensate for the lack of isochronism of the balance spring. The time-keeping of this watch was surprisingly good and Harrison proceeded to build a larger and more sophisticated version, with a remontoire. This timekeeper was completed in 1759 and its performance was so remarkable that Harrison decided to enter it for the longitude prize in place of his third machine. It was tested on two voyages to the West Indies and on both occasions it met the requirements of the Act, but the Board of Longitude withheld half the prize money until they had proof that the timekeeper could be duplicated. Copies were made by Harrison and by Larcum Kendall, but the Board still continued to prevaricate and Harrison received the full amount of the prize in 1773 only after George III had intervened on his behalf.Although Harrison had shown that it was possible to construct a timepiece of sufficient accuracy to determine longitude at sea, his solution was too complex and costly to be produced in quantity. It had, for example, taken Larcum Kendall two years to produce his copy of Harrison's fourth timekeeper, but Harrison had overcome the psychological barrier and opened the door for others to produce chronometers in quantity at an affordable price. This was achieved before the end of the century by Arnold and Earnshaw, but they used an entirely different design that owed more to Le Roy than it did to Harrison and which only retained Harrison's maintaining power.[br]Principal Honours and DistinctionsRoyal Society Copley Medal 1749.Bibliography1767, The Principles of Mr Harrison's Time-keeper, with Plates of the Same, London. 1767, Remarks on a Pamphlet Lately Published by the Rev. Mr Maskelyne Under theAuthority of the Board of Longitude, London.1775, A Description Concerning Such Mechanisms as Will Afford a Nice or True Mensuration of Time, London.Further ReadingR.T.Gould, 1923, The Marine Chronometer: Its History and Development, London; reprinted 1960, Holland Press.—1978, John Harrison and His Timekeepers, 4th edn, London: National Maritime Museum.H.Quill, 1966, John Harrison, the Man who Found Longitude, London. A.G.Randall, 1989, "The technology of John Harrison's portable timekeepers", Antiquarian Horology 18:145–60, 261–77.J.Betts, 1993, John Harrison London (a good short account of Harrison's work). S.Smiles, 1905, Men of Invention and Industry; London: John Murray, Chapter III. Dictionary of National Biography, Vol. IX, pp. 35–6.DV -
104 Lombe, John
SUBJECT AREA: Textiles[br]b. c. 1693 probably Norwich, Englandd. 20 November 1722 Derby, England[br]English creator of the first successful powered textile mill in Britain.[br]John Lombe's father, Henry Lombe, was a worsted weaver who married twice. John was the second son of the second marriage and was still a baby when his father died in 1695. John, a native of the Eastern Counties, was apprenticed to a trade and employed by Thomas Cotchett in the erection of Cotchett's silk mill at Derby, which soon failed however. Lombe went to Italy, or was sent there by his elder half-brother, Thomas, to discover the secrets of their throwing machinery while employed in a silk mill in Piedmont. He returned to England in 1716 or 1717, bringing with him two expert Italian workmen.Thomas Lombe was a prosperous London merchant who financed the construction of a new water-powered silk mill at Derby which is said to have cost over £30,000. John arranged with the town Corporation for the lease of the island in the River Derwent, where Cotchett had erected his mill. During the four years of its construction, John first set up the throwing machines in other parts of the town. The machines were driven manually there, and their product helped to defray the costs of the mill. The silk-throwing machine was very complex. The water wheel powered a horizontal shaft that was under the floor and on which were placed gearwheels to drive vertical shafts upwards through the different floors. The throwing machines were circular, with the vertical shafts running through the middle. The doubled silk threads had previously been wound on bobbins which were placed on spindles with wire flyers at intervals around the outer circumference of the machine. The bobbins were free to rotate on the spindles while the spindles and flyers were driven by the periphery of a horizontal wheel fixed to the vertical shaft. Another horizontal wheel set a little above the first turned the starwheels, to which were attached reels for winding the silk off the bobbins below. Three or four sets of these spindles and reels were placed above each other on the same driving shaft. The machine was very complicated for the time and must have been expensive to build and maintain.John lived just long enough to see the mill in operation, for he died in 1722 after a painful illness said to have been the result of poison administered by an Italian woman in revenge for his having stolen the invention and for the injury he was causing the Italian trade. The funeral was said to have been the most superb ever known in Derby.[br]Further ReadingSamuel Smiles, 1890, Men of Invention and Industry, London (probably the only biography of John Lombe).Rhys Jenkins, 1933–4, "Historical notes on some Derbyshire industries", Transactions of the Newcomen Society 14 (provides an acount of John Lombe and his part in the enterprise at Derby).R.L.Hills, 1970, Power in the Industrial Revolution, Manchester (briefly covers the development of early silk-throwing mills).W.English, 1969, The Textile Industry, London (includes a chapter on "Lombe's Silk Machine").P.Barlow, 1836, Treatise of Manufactures and Machinery of Great Britain, London (describes Lombe's mill and machinery, but it is not known how accurate the account may be).RLH -
105 Pixii, Antoine Hippolyte
SUBJECT AREA: Electricity[br]b. 1808 Franced. 1835[br]French instrument maker who devised the first machine to incorporate the basic elements of a modern electric generator.[br]Mechanical devices to transform energy from a mechanical to an electrical form followed shortly after Faraday's discovery of induction. One of the earliest was Pixii's magneto generator. Pixii had been an instrument maker to Arago and Ampère for a number of years and his machine was first announced to the Academy of Sciences in Paris in September 1832. In this hand-driven generator a permanent magnet was rotated in close proximity to two coils on soft iron cores, producing an alternating current. Subsequently Pixii adapted to a larger version of his machine a "see-saw" switch or commutator devised by Ampère, in order to obtain a unidirectional current. The machine provided a current similar to that obtained with a chemical cell and was capable of decomposing water into oxygen and hydrogen. It was the prototype of many magneto-electric machines which followed.[br]Principal Honours and DistinctionsAcademy of Sciences, Paris, Gold Medal 1832.Further ReadingB.Bowers, 1982, A History of Electric Light and Power, London, pp. 70–2 (describes the development of Pixii's generator).C.Jackson, 1833, "Notice of the revolving electric magnet of Mr Pixii of Paris", American Journal of Science 24:146–7.GWBiographical history of technology > Pixii, Antoine Hippolyte
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106 Whitney, Amos
[br]b. 8 October 1832 Biddeford, Maine, USAd. 5 August 1920 Poland Springs, Maine, USA[br]American mechanical engineer and machine-tool manufacturer.[br]Amos Whitney was a member of the same distinguished family as Eli Whitney. His father was a locksmith and machinist and he was apprenticed at the age of 14 to the Essex Machine Company of Lawrence, Massachusetts. In 1850 both he and his father were working at the Colt Armory in Hartford, Connecticut, where he first met his future partner, F.A. Pratt. They both subsequently moved to the Phoenix Iron Works, also at Hartford, and in 1860 they started in a small way doing machine work on their own account. In 1862 they took a third partner, Monroe Stannard, and enlarged their workshop. The business continued to expand, but Pratt and Whitney remained at the Phoenix Iron Works until 1864 and in the following year they built their first new factory. The Pratt \& Whitney Company was incorporated in 1869 with a capital of $350,000, Amos Whitney being appointed General Superintendent. The firm specialized in making machine tools and tools particularly for the armament industry. Pratt \& Whitney was one of the leading firms developing the system of interchangeable manufacture which led to the need to establish national standards of measurement. The Rogers-Bond Comparator, developed with the backing of Pratt \& Whitney, played an important part in the establishment of these standards, which formed the basis of the gauges of many various types made by the firm.Amos Whitney was made Vice-President of Pratt \& Whitney Company in 1893 and was President from 1898 until 1901, when the company was acquired by the Niles- Bement-Pond Company: he then remained as one of the directors. He was elected a Member of the American Society of Mechanical Engineers in 1913.[br]Further ReadingJ.W.Roe, 1916, English and American Tool Builders, New Haven; reprinted 1926, New York, and 1987, Bradley, Ill. (describes the origin and development of the Pratt \& Whitney Company).RTS -
107 Computers
The brain has been compared to a digital computer because the neuron, like a switch or valve, either does or does not complete a circuit. But at that point the similarity ends. The switch in the digital computer is constant in its effect, and its effect is large in proportion to the total output of the machine. The effect produced by the neuron varies with its recovery from [the] refractory phase and with its metabolic state. The number of neurons involved in any action runs into millions so that the influence of any one is negligible.... Any cell in the system can be dispensed with.... The brain is an analogical machine, not digital. Analysis of the integrative activities will probably have to be in statistical terms. (Lashley, quoted in Beach, Hebb, Morgan & Nissen, 1960, p. 539)It is essential to realize that a computer is not a mere "number cruncher," or supercalculating arithmetic machine, although this is how computers are commonly regarded by people having no familiarity with artificial intelligence. Computers do not crunch numbers; they manipulate symbols.... Digital computers originally developed with mathematical problems in mind, are in fact general purpose symbol manipulating machines....The terms "computer" and "computation" are themselves unfortunate, in view of their misleading arithmetical connotations. The definition of artificial intelligence previously cited-"the study of intelligence as computation"-does not imply that intelligence is really counting. Intelligence may be defined as the ability creatively to manipulate symbols, or process information, given the requirements of the task in hand. (Boden, 1981, pp. 15, 16-17)The task is to get computers to explain things to themselves, to ask questions about their experiences so as to cause those explanations to be forthcoming, and to be creative in coming up with explanations that have not been previously available. (Schank, 1986, p. 19)In What Computers Can't Do, written in 1969 (2nd edition, 1972), the main objection to AI was the impossibility of using rules to select only those facts about the real world that were relevant in a given situation. The "Introduction" to the paperback edition of the book, published by Harper & Row in 1979, pointed out further that no one had the slightest idea how to represent the common sense understanding possessed even by a four-year-old. (Dreyfus & Dreyfus, 1986, p. 102)A popular myth says that the invention of the computer diminishes our sense of ourselves, because it shows that rational thought is not special to human beings, but can be carried on by a mere machine. It is a short stop from there to the conclusion that intelligence is mechanical, which many people find to be an affront to all that is most precious and singular about their humanness.In fact, the computer, early in its career, was not an instrument of the philistines, but a humanizing influence. It helped to revive an idea that had fallen into disrepute: the idea that the mind is real, that it has an inner structure and a complex organization, and can be understood in scientific terms. For some three decades, until the 1940s, American psychology had lain in the grip of the ice age of behaviorism, which was antimental through and through. During these years, extreme behaviorists banished the study of thought from their agenda. Mind and consciousness, thinking, imagining, planning, solving problems, were dismissed as worthless for anything except speculation. Only the external aspects of behavior, the surface manifestations, were grist for the scientist's mill, because only they could be observed and measured....It is one of the surprising gifts of the computer in the history of ideas that it played a part in giving back to psychology what it had lost, which was nothing less than the mind itself. In particular, there was a revival of interest in how the mind represents the world internally to itself, by means of knowledge structures such as ideas, symbols, images, and inner narratives, all of which had been consigned to the realm of mysticism. (Campbell, 1989, p. 10)[Our artifacts] only have meaning because we give it to them; their intentionality, like that of smoke signals and writing, is essentially borrowed, hence derivative. To put it bluntly: computers themselves don't mean anything by their tokens (any more than books do)-they only mean what we say they do. Genuine understanding, on the other hand, is intentional "in its own right" and not derivatively from something else. (Haugeland, 1981a, pp. 32-33)he debate over the possibility of computer thought will never be won or lost; it will simply cease to be of interest, like the previous debate over man as a clockwork mechanism. (Bolter, 1984, p. 190)t takes us a long time to emotionally digest a new idea. The computer is too big a step, and too recently made, for us to quickly recover our balance and gauge its potential. It's an enormous accelerator, perhaps the greatest one since the plow, twelve thousand years ago. As an intelligence amplifier, it speeds up everything-including itself-and it continually improves because its heart is information or, more plainly, ideas. We can no more calculate its consequences than Babbage could have foreseen antibiotics, the Pill, or space stations.Further, the effects of those ideas are rapidly compounding, because a computer design is itself just a set of ideas. As we get better at manipulating ideas by building ever better computers, we get better at building even better computers-it's an ever-escalating upward spiral. The early nineteenth century, when the computer's story began, is already so far back that it may as well be the Stone Age. (Rawlins, 1997, p. 19)According to weak AI, the principle value of the computer in the study of the mind is that it gives us a very powerful tool. For example, it enables us to formulate and test hypotheses in a more rigorous and precise fashion than before. But according to strong AI the computer is not merely a tool in the study of the mind; rather the appropriately programmed computer really is a mind in the sense that computers given the right programs can be literally said to understand and have other cognitive states. And according to strong AI, because the programmed computer has cognitive states, the programs are not mere tools that enable us to test psychological explanations; rather, the programs are themselves the explanations. (Searle, 1981b, p. 353)What makes people smarter than machines? They certainly are not quicker or more precise. Yet people are far better at perceiving objects in natural scenes and noting their relations, at understanding language and retrieving contextually appropriate information from memory, at making plans and carrying out contextually appropriate actions, and at a wide range of other natural cognitive tasks. People are also far better at learning to do these things more accurately and fluently through processing experience.What is the basis for these differences? One answer, perhaps the classic one we might expect from artificial intelligence, is "software." If we only had the right computer program, the argument goes, we might be able to capture the fluidity and adaptability of human information processing. Certainly this answer is partially correct. There have been great breakthroughs in our understanding of cognition as a result of the development of expressive high-level computer languages and powerful algorithms. However, we do not think that software is the whole story.In our view, people are smarter than today's computers because the brain employs a basic computational architecture that is more suited to deal with a central aspect of the natural information processing tasks that people are so good at.... hese tasks generally require the simultaneous consideration of many pieces of information or constraints. Each constraint may be imperfectly specified and ambiguous, yet each can play a potentially decisive role in determining the outcome of processing. (McClelland, Rumelhart & Hinton, 1986, pp. 3-4)Historical dictionary of quotations in cognitive science > Computers
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108 environment
1) окружающая среда; условия окружающей среды; обстановка2) вчт окружениеб) область памяти, резервируемая для переменных, используемых приложением (в операционной системе MS DOS)в) процедура, окаймлённая операторами начала и окончания процедуры (в системе LATEX)•- database environment
- dead acoustic environment
- design environment
- distributed computing environment
- electromagnetic environment
- electromagnetic pulse environment
- electronic environment
- embedded environment - event-driven environment - hardware environment
- induced environment
- integrated development environment - multicarrier environment
- multipath environment
- multi-user simulation environment
- nested environment - operational environment
- programming environment
- radiation environment
- real-life environment
- reentry environment
- rugged environment - severe environment - software environment
- space environment - use environment
- virtual machine environment
- windowing environment
- windows environment -
109 environment
1) окружающая среда; условия окружающей среды; обстановка2) вчт. окружениеб) область памяти, резервируемая для переменных, используемых приложением (в операционной системе MS DOS)в) процедура, окаймлённая операторами начала и окончания процедуры (в системе LATEX)•- application program support environment
- artificial environment
- client/server open development environment
- common open software environment
- cross-platform environment
- database environment
- dead acoustic environment
- design environment
- distributed computing environment
- electromagnetic environment
- electromagnetic pulse environment
- electronic environment
- embedded advanced sampling environment
- embedded environment
- EMP environment
- event-driven environment
- GNU network object model environment
- graphical user environment
- ground environment
- hardware environment
- induced environment
- integrated development and debugging environment
- integrated development environment
- interactive environment
- ISO development environment
- Java runtime environment
- luminous environment
- multicarrier environment
- multipath environment
- multi-user simulation environment
- nested environment
- normal input/output control environment
- nuclear environment
- open collaboration environment
- operating environment
- operational environment
- programming environment
- radiation environment
- real-life environment
- reentry environment
- rugged environment
- semiautomatic ground environment
- service environment
- severe environment
- simple communications programming environment
- simulated environment
- software environment
- space environment
- structured and open environment
- test environment
- use environment
- virtual machine environment
- windowing environment
- windows environmentThe New English-Russian Dictionary of Radio-electronics > environment
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110 Reason, Richard Edmund
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 21 December 1903 Exeter, Devon, Englandd. 20 March 1987 Great Bowden, Leicestershire, England[br]English metrologist who developed instruments for measuring machined-surface roughness.[br]Richard Edmund Reason was educated at Tonbridge School and the Royal College of Science (Imperial College), where he studied under Professor A.F.C.Pollard, Professor of Technical Optics. After graduating in 1925 he joined Taylor, Taylor and Hobson Ltd, Leicester, manufacturers of optical, electrical and scientific instruments, and remained with that firm throughout his career. One of his first contributions was in the development, with E.F.Fincham, of the Fincham Coincidence Optometer. At this time the firm, under William Taylor, was mainly concerned with optical instruments and lens manufacture, but in the 1930s Reason was also engaged in developing means for measuring the roughness of machined surfaces. The need for establishing standards and methods of measurement of surface finish was called for when the subcontracting of aero-engine components became necessary during the Second World War. This led to the development by Reason of an instrument in which a stylus was moved across the surface and the profile recorded electronically. This was called the Talysurf and was first produced in 1941. Further development followed, and from 1947 Reason tackled the problem of measuring roundness, producing the first Talyrond machine in 1949. The technology developed for these instruments was used in the production of others such as the Talymin Comparator and the Talyvel electronic level. Reason was also associated with the development of optical projection systems to measure the profile of parts such as gear teeth, screw threads and turbine blades. He retired in 1968 but continued as a consultant to the company. He served for many years on committees of the British Standards Institution on surface metrology and was a representative of Britain at the International Standards Organization.[br]Principal Honours and DistinctionsOBE 1967. FRS 1971. Honorary DSc University of Birmingham 1969. Honorary DSc Leicester University 1971.Further ReadingD.J.Whitehouse, 1990, Biographical Memoirs of Fellows of the Royal Society 36, London, pp. 437–62 (an illustrated obituary notice listing Reason's eighty-nine British patents, published between 1930 and 1972, and his twenty-one publications, dating from 1937 to 1966).K.J.Hume, 1980, A History of Engineering Metrology, London, 113–21 (contains a shorter account of Reason's work).RTS -
111 develop
di'veləppast tense, past participle - developed; verb1) (to (cause to) grow bigger or to a more advanced state: The plan developed slowly in his mind; It has developed into a very large city.) desarrollar(se)2) (to acquire gradually: He developed the habit of getting up early.) contraer, adquirir3) (to become active, visible etc: Spots developed on her face.) aparecer4) (to use chemicals to make (a photograph) visible: My brother develops all his own films.) revelar•develop vb1. desarrollar2. revelar3. convertirse4. surgir / salirtr[dɪ'veləp]1 (cultivate, cause to grow - gen) desarrollar; (foster - trade, arts) fomentar, promover; (expand - business, industry) ampliar; (build up, improve - skill, ability, talent) perfeccionar2 (elaborate, expand - idea, argument, story) desarrollar; (- theory, plan) desarrollar, elaborar3 (start - roots) echar; (devise, invent - policy, method, strategy) idear, desarrollar; (- drug, product, technology) crear4 (acquire - habit, quality, feature) contraer, adquirir; (- talent, interest) mostrar; (- tendency) revelar, manifestar; (get - illness, disease) contraer; (- immunity, resistance) desarrollar5 (exploit - resources) explotar; (- site, land) urbanizar6 (film, photograph) revelar1 (grow - person, body, nation, region, etc) desarrollarse; (- system) perfeccionarse; (feeling, interest) aumentar, crecer2 (evolve - emotion) convertirse ( into, en), transformarse ( into, en), evolucionar; (plot, novel) desarrollarse3 (appear - problem, complication, symptom) aparecer, surgir; (situation, crisis) producirse4 (of film, photograph) salir\SMALLIDIOMATIC EXPRESSION/SMALLto develop a taste for something cogerle gusto a algodevelop [di'vɛləp] vt1) form, make: desarrollar, elaborar, formar2) : revelar (en fotografía)3) foster: desarrollar, fomentar4) exploit: explotar (recursos), urbanizar (un área)5) acquire: adquirirto develop an interest: adquirir un interés6) contract: contraer (una enfermedad)develop vi1) grow: desarrollarse2) arise: aparecer, surgirv.• revelar (una película) v.v.• desarrollar v.• desenvolver v.• explotar v.• progresar v.• urbanizar v.dɪ'veləp
1.
1)a) (elaborate, devise) \<\<theory/plan\>\> desarrollar, elaborar; \<\<idea\>\> desarrollar; \<\<method\>\> idear, desarrollar; \<\<plot/story/character\>\> desarrollarb) ( improve) \<\<skill/ability/quality\>\> desarrollarc) ( exploit) \<\<land/area\>\> urbanizar*d) ( expand) \<\<business/range\>\> ampliar*e) ( create) \<\<drug/engine\>\> crear2) ( acquire) \<\<immunity/resistance\>\> desarrollar; \<\<disease\>\> contraer* (frml)I've developed a taste for... — le he tomado (el) gusto a...
3) ( Phot) revelar
2.
vi1)a) ( grow) \<\<person/industry\>\> desarrollarse; \<\<interest\>\> crecer*, aumentarb) ( evolve)to develop INTO something — convertirse* or transformarse en algo
c) ( Econ) \<\<nation/region\>\> desarrollarse, progresard) ( unfold) \<\<plot/novel\>\> desarrollarse2) ( appear) \<\<problem/complication\>\> surgir*, aparecer*; \<\<crisis\>\> producirse*[dɪ'velǝp]1. VT1) (=make bigger, stronger etc) [+ mind, body] desarrollar; (fig) [+ argument, idea] desarrollar2) (=generate) [+ plan] elaborar; [+ process] perfeccionar3) (=acquire) [+ interest, taste, habit] adquirir; [+ disease] contraer; [+ tendency] coger, desarrollar; [+ engine trouble] empezar a tener4) (=build on) [+ region] desarrollar, fomentar; [+ land] urbanizar; [+ site] ampliarthis land is to be developed — se va a construir en or urbanizar este terreno
5) (=exploit) [+ resources, mine etc] explotar6) (Phot) revelar2. VI1) (=change, mature) desarrollarseto develop into — convertirse or transformarse en
2) (=progress) [country] desarrollarsehow is the book developing? — ¿qué tal va el libro?
3) (=come into being) aparecer; [symptoms] aparecer, mostrarse4) (=come about) [idea, plan, problem] surgirit later developed that... — más tarde quedó claro que...
* * *[dɪ'veləp]
1.
1)a) (elaborate, devise) \<\<theory/plan\>\> desarrollar, elaborar; \<\<idea\>\> desarrollar; \<\<method\>\> idear, desarrollar; \<\<plot/story/character\>\> desarrollarb) ( improve) \<\<skill/ability/quality\>\> desarrollarc) ( exploit) \<\<land/area\>\> urbanizar*d) ( expand) \<\<business/range\>\> ampliar*e) ( create) \<\<drug/engine\>\> crear2) ( acquire) \<\<immunity/resistance\>\> desarrollar; \<\<disease\>\> contraer* (frml)I've developed a taste for... — le he tomado (el) gusto a...
3) ( Phot) revelar
2.
vi1)a) ( grow) \<\<person/industry\>\> desarrollarse; \<\<interest\>\> crecer*, aumentarb) ( evolve)to develop INTO something — convertirse* or transformarse en algo
c) ( Econ) \<\<nation/region\>\> desarrollarse, progresard) ( unfold) \<\<plot/novel\>\> desarrollarse2) ( appear) \<\<problem/complication\>\> surgir*, aparecer*; \<\<crisis\>\> producirse* -
112 test
1) испытание; испытания || испытывать2) проверка; контроль || проверять; контролировать3) тест; тестирование || тестировать5) стат. критерий•- accelerated testto dry test — испытывать без резания, испытывать станок без резания, испытывать на холостом ходу
- acceptance test
- alignment test
- alternative test
- angular test
- approval test
- axial load test
- axial test
- back-to-back test
- balance test
- bar-to-bar test
- benchmark test
- bend test
- bending fatigue test
- bending test
- bend-over test
- black-band test
- blow-bending test
- blueing test
- bond test
- brake test
- braking test
- breaking test
- Brinell hardness test
- Brinell test
- buckling test
- calibrated driving machine test
- calibration test
- calorimetric test
- camera-aided test
- carbon test
- certification test
- Charpy impact test
- Charpy test
- check test
- check-out test
- closure test
- cold bend test
- cold pressing test
- collision test
- commissioning test
- commutation test
- comparative test
- compression test
- computer-aided design and test
- computer-assisted fault isolation test
- cone-indentation test
- cone-thrust test
- conformance test
- controlled test
- core test
- corrosion fatigue test
- corrosion test
- creep test
- cutting test
- deflection tests
- destruction test
- destructive test
- determinative test
- development test
- developmental test
- diagnostic test
- diamond-pyramid hardness test
- discrimination test
- disk test
- drawing test
- driving test
- driving-profile test
- drop test
- durability test
- dynamic test
- dynamometer test
- eddy current test
- efficiency test
- electrical back-to-back test
- end-to-end test
- endurance test
- environmental test
- etching test
- evaluation test
- extraction test
- facing test
- factory test
- fatigue test
- fault detection test
- fault location test
- field test
- final test
- flattening test
- flex life test
- flexural test
- flexure test
- forging test
- friction test
- frictional test
- full-scale test
- functional test
- gear life test
- geometric test
- geometrical test
- grab test
- ground test
- hardness test
- harmonic test
- high-voltage test
- hydraulic pressure test
- hydraulic test
- identification tests
- impact test
- impulse test
- in-process test
- inspection test
- investigation test
- Jominy test
- L-2 test
- lab test
- laboratory test
- leak test
- life test
- light load test
- load test
- machinability test
- machine tool alignment test
- machine tool test
- machining performance test
- magnetic test
- maintenance test
- mechanical test
- micrographic test
- monitoring test
- noise-level test
- no-load test
- nondestructive test
- official test
- open-circuit test
- operating test
- optimality test
- out-of-control tests
- overhead load test
- overload test
- overspeed test
- peel test
- performance test
- periodic test
- periodical test
- practical test
- precision test
- predelivery test
- preinstallation test
- preliminary test
- preproduction test
- preventive test
- production test
- production-type test
- profile tests
- proof test
- qualification test
- quality assurance test
- quality conformance test
- quality performance test
- random test
- ravel test
- reduced test
- reliability compliance test
- reliability determination test
- reliability test
- response test
- retardation test
- rig test
- roller fatigue test
- roller life test
- routine check tests
- routine test
- running test
- rupture test
- safety test
- saline droplet corrosion test
- sampling test
- scoring test
- sequential test
- service test
- shear test
- shearing test
- shock test
- short test
- simulated service test
- single test
- soft test
- sound test
- special test
- stability test
- standard test
- starting test
- state tests
- static bending test
- static test
- step stress test
- storage test
- straightening test
- strength test
- strip test
- sudden short-circuit test
- sustained power test
- sustained short-circuit test
- tear test
- tear-apart test
- temperature-rise test
- tensile test
- tension test
- test of the accuracy
- thermal test
- time-restricted test
- tool wear test
- torsional test
- transportability test
- trouble-free assurance test
- trouble-free quality assurance test
- Turing test
- twist test
- twisting test
- type approval test
- type test
- upsetting test
- use test
- validation test
- vibration test
- waveform test
- wear test
- working testEnglish-Russian dictionary of mechanical engineering and automation > test
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113 multiple
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114 surface
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115 Berry, George
SUBJECT AREA: Agricultural and food technology[br]b. Missouri, USA fl. 1880s[br]American farmer who developed the first steam-powered, self-propelled combine harvester.[br]Born in Missouri, George Berry moved to a 4,000 acre (1,600 hectare) farm at Lindsay in California, and between 1881 and 1886 built himself a steam-driven combine harvester. Berry's machine was the first self-propelled harvester and the first to use straw as a fuel. A single boiler powered two engines: a 26 hp (19 kW) Mitchell Fisher engine provided the forward drive, whilst a 6 hp (4 kW) Westinghouse engine drove the threshing mechanism. Cleaned straw was passed by conveyor back to the firebox, where it provided the main fuel. The original machine had a 22 ft cut, but a later machine extended this to 40 ft and harvested 50 acres a day, although on one occasion it achieved the distinction of being the first harvester to cut over 100 acres in one day. The traction engine used for motive power was removable and was used after harvest for ploughing. It was the first engine to be capable of forward and reverse motion.In later life Berry moved into politics, becoming a member of the California Senate for Inyo and Tulare in the 1890s.[br]Further ReadingG.Quick and W.Buchele, 1978, The Grain Harvesters, American Society of Agricultural Engineers (gives an account of combine-harvester development).AP -
116 Bloch, Jacob
SUBJECT AREA: Textiles[br]fl. 1888[br]European inventor of a machine for cutting layers of cloth.[br]In mass production of garments, layers of cloth are laid out on top of each other and multiples of each different part are cut out at the same time. The first portable cutting machine was invented by Joseph Bloch in 1888. It was operated from a DC electricity supply and had a circular knife, which was difficult to use when cutting round curves. Therefore the cloth had to be raised on curves so that it would reach the furthest part of the circular blade. In the same year in the USA, G.P.Eastman produced a vertically reciprocating cutting machine with a straight blade.[br]Further ReadingC.Singer (ed.), 1978, A History of Technology, Vol. VI, Oxford: Clarendon Press (describes Bloch's invention).I.McNeil (ed.), 1990, An Encyclopaedia of the History of Technology, London: Routledge, pp. 850–2 (provides a brief description of the making-up trade).D.Sinclair, "The current climate for research and development in the European-clothing industry with particular reference to single ply cutting", unpublished MSc thesis, Salford University (discusses developments in garment production).RLH -
117 Budding, Edwin Beard
SUBJECT AREA: Domestic appliances and interiors[br]b. c.1796 Bisley (?), Gloucestershire, Englandd. 1846 Dursley, Gloucestershire, England[br]English inventor of the lawn mower.[br]Budding was an engineer who described himself as a mechanic on his first patent papers and as a manager in later applications.A rotary machine had been developed at Brimscombe Mill in Stroud for cutting the pile on certain clothes and Budding saw the potential of this principle for a machine for cutting grass on lawns. It is not clear whether Budding worked for the Lewis family, who owned the mill, or whether he saw the machines during their manufacture at the Phoenix Foundry. At the age of 35 Budding entered into partnership with John Ferrabee, who had taken out a lease on Thrupp Mill. They reached an agreement in which Ferrabee would pay to obtain letter patent on the mower and would cover all the development costs, after which they would have an equal share in the profits. The agreement also allowed Ferrabee to license the manufacture of the machine and in 1832 he negotiated with the agricultural manufacturer Ransomes, allowing them to manufacture the mower.Budding invented a screw-shifting spanner at a time when he might have been working as a mechanic at Thrupp Mill. He later rented a workshop in which he produced Pepperbox pistols. In the late 1830s he moved to Dursley, where he became Manager for Mr G.Lister, who made clothing machinery. Together they patented an improved method of making cylinders for carding engines, but Budding required police protection from those who saw their jobs threatened by the device. He made no fortune from his inventions and died at the age of 50.[br]Further ReadingH.A.Randall, 1965–6 "Some mid-Gloucestershire engineers and inventors", Transactions of the Newcomen Society 38:89–96 (looks at the careers of both Budding and Ferrabee).AP -
118 Charpy, Augustin Georges Albert
SUBJECT AREA: Metallurgy[br]b. 1 September 1865 Ouillins, Rhône, Franced. 25 November 1945 Paris, France[br]French metallurgist, originator of the Charpy pendulum impact method of testing metals.[br]After graduating in chemistry from the Ecole Polytechnique in 1887, Charpy continued to work there on the physical chemistry of solutions for his doctorate. He joined the Laboratoire d'Artillerie de la Marine in 1892 and began to study the structure and mechanical properties of various steels in relation to their previous heat treatment. His first memoir, on the mechanical properties of steels quenched from various temperatures, was published in 1892 on the advice of Henri Le Chatelier. He joined the Compagnie de Chatillon Commentry Fourchamboult et Decazeville at their steelworks in Imphy in 1898, shortly after the discovery of Invar by G.E. Guillaume. Most of the alloys required for this investigation had been prepared at Imphy, and their laboratories were therefore well equipped with sensitive and refined dilatometric facilities. Charpy and his colleague L.Grenet utilized this technique in many of their earlier investigations, which were largely concerned with the transformation points of steel. He began to study the magnetic characteristics of silicon steels in 1902, shortly after their use as transformer laminations had first been proposed by Hadfield and his colleagues in 1900. Charpy was the first to show that the magnetic hysteresis of these alloys decreased rapidly as their grain size increased.The first details of Charpy's pendulum impact testing machine were published in 1901, about two years before Izod read his paper to the British Association. As with Izod's machine, the energy of fracture was measured by the retardation of the pendulum. Charpy's test pieces, however, unlike those of Izod, were in the form of centrally notched beams, freely supported at each end against rigid anvils. This arrangement, it was believed, transmitted less energy to the frame of the machine and allowed the energy of fracture to be more accurately measured. In practice, however, the blow of the pendulum in the Charpy test caused visible distortion in the specimen as a whole. Both tests were still widely used in the 1990s.In 1920 Charpy left Imphy to become Director-General of the Compagnie des Aciéries de la Marine et Homecourt. After his election to the Académie des Sciences in 1918, he came to be associated with Floris Osmond and Henri Le Chatelier as one of the founders of the "French School of Physical Metallurgy". Around the turn of the century he had contributed much to the development of the metallurgical microscope and had helped to introduce the Chatelier thermocouple into the laboratory and to industry. He also popularized the use of platinum-wound resistance furnaces for laboratory purposes. After 1920 his industrial responsibilities increased greatly, although he continued to devote much of his time to teaching at the Ecole Supérieure des Mines in Paris, and at the Ecole Polytechnique. His first book, Leçons de Chimie (1892, Paris), was written at the beginning of his career, in association with H.Gautier. His last, Notions élémentaires de sidérurgie (1946, Paris), with P.Pingault as co-author, was published posthumously.[br]BibliographyCharpy published important metallurgical papers in Comptes rendus… Académie des Sciences, Paris.Further ReadingR.Barthélémy, 1947, "Notice sur la vie et l'oeuvre de Georges Charpy", Notices et discours, Académie des Sciences, Paris (June).M.Caullery, 1945, "Annonce du décès de M.G. Charpy" Comptes rendus Académie des Sciences, Paris 221:677.P.G.Bastien, 1963, "Microscopic metallurgy in France prior to 1920", Sorby Centennial Symposium on the History of Metallurgy, AIME Metallurgical Society Conference Vol.27, pp. 171–88.ASDBiographical history of technology > Charpy, Augustin Georges Albert
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119 Goulding, John
SUBJECT AREA: Textiles[br]b. 1791 Massachusetts, USA d. 1877[br]American inventor of an early form of condenser carding machine.[br]The condenser method of spinning was developed chiefly by manufacturers and machine makers in eastern Massachusetts between 1824 and 1826. John Goulding, a machinist from Dedham in Massachusetts, combined the ring doffer, patented by Ezekiel Hale in 1825, and the revolving twist tube, patented by George Danforth in 1824; with the addition of twisting keys in the tubes, the carded woollen sliver could be divided and then completely and continuously twisted. He divided the carded web longitudinally with the ring doffer and twisted these strips to consolidate them into slubbings. The dividing was carried out by covering the periphery of the doffer cylinder with separate rings of card clothing and spacing these rings apart by rings of leather, so that instead of width-way detached strips leaving the card, the strips were continuous and did not require piecing. The strips were passed through rotating tubes and wound on bobbins, and although the twist was false it sufficed to compress the fibres together ready for spinning. Goulding patented his invention in both Britain and the USA in 1826, but while his condensers were very successful and within twenty years had been adopted by a high proportion of woollen mills in America, they were not adopted in Britain until much later. Goulding also worked on other improvements to woollen machinery: he developed friction drums, on which the spools of roving from the condenser cards were placed to help transform the woollen jenny into the woollen mule or jack.[br]Bibliography1826, British patent no. 5,355 (condenser carding machine).Further ReadingD.J.Jeremy, 1981, Transatlantic Industrial Revolution. The Diffusion of Textile Technologies Between Britain and America, 1790–1830s, Oxford (provides a good explanation of the development of the condenser card).W.English, 1969, The Textile Industry, London (a brief account).C.Singer (ed.), 1958, A History of Technology, Vol. IV, Oxford: Clarendon Press (a brief account).RLH -
120 Macmillan, Kirkpatrick
SUBJECT AREA: Land transport[br]b. 1810d. 1878[br]Scottish inventor and builder of the first pedal-operated bicycle.[br]Macmillan was the blacksmith at the village of Courthill, Dumfriesshire, Scotland. Before 1839, bicycles were of the draisienne or hobby-horse type, which were propelled by the rider's feet pushing alternately on the ground. Macmillan was the first to appreciate that two wheels placed in line could be balanced while being propelled by means of treadles and cranks fitted to one of the axles. His machine, completed in 1839, had wooden wheels shod with iron tyres, and a curved wooden frame which was forked to take the rear axle; the front, steering wheel was carried in an iron fork. The axles ran in brass bearings. Cranks were keyed to the rear axle which was driven by rods connected to two swinging arms; these were pivotted from the frame near the pivot of the front fork, and had foot treadles at their lower ends. Macmillan frequently rode this machine the 22.5 km (14 miles) from Courthill to Dumfries. In 1842 he was fined five shillings at the Gorbals Police Court for knocking over a child at the end of a 64 km (40 mile) ride from Courthill to Glasgow.Although several people copied Macmillan's machine over the next twenty years and it anticipated the rear-driven safety bicycle by some forty years, it did not prove popular.[br]Further ReadingC.F.Caunter, 1955, The History and Development of Cycles, London: HMSO.IMcN
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