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1 clearance for the depth gauges
Лесоводство: зазор для пазух подрезающих зубьев пильной цепиУниверсальный англо-русский словарь > clearance for the depth gauges
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2 clearance for the depth gauges
Англо-русский сельскохозяйственный словарь > clearance for the depth gauges
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3 clearance for the depth gauges
Англо-русский словарь по деревообрабатывающей промышленности > clearance for the depth gauges
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4 Johansson, Carl Edvard
[br]b. 15 March 1864 Orebro, Swedend. 30 September 1943 Eskilstuna, Sweden[br]Swedish metrologist and inventor of measuring-gauge blocks.[br]Carl Edvard Johansson was first apprenticed to a shoemaker, but he soon abandoned that career. In 1882 he went to America to join his brother Arvid working at a sawmill in the summer; in winter the brothers obtained further general education at the Gustavus Adolphus College at St Peter, Minnesota. They returned to Sweden in November 1884 and in the following year Carl obtained employment with a small engineering firm which rented a workshop in the government small-arms factory at Eskilstuna. In his spare time he attended the Eskilstuna Technical College and in 1888 he was accepted as an apprentice armourer inspector. After completion of his apprenticeship he was appointed an armourer inspector, and it was in his work of inspection that he realized that the large number of gauges then required could be reduced if several accurate gauges could be used in combination. This was in 1896, and the first set of gauges was made for use in the rifle factory. With these, any dimension between 1 mm and 201 mm could be made up to the nearest 0.01 mm, the gauges having flat polished surfaces that would adhere together by "wringing". Johansson obtained patents for the system from 1901, but it was not until c.1907 that the sets of gauges were marketed generally. Gauges were made in inch units for Britain and America—slightly different as the standards were not then identical. Johansson formed his own company to manufacture the gauges in 1910, but he did not give up his post in the rifle factory until 1914. By the 1920s Johansson gauges were established as the engineering dimensional standards for the whole world; the company also made other precision measuring instruments such as micrometers and extensometers. A new company, C.E.Johansson Inc., was set up in America for manufacture and sales, and the gauges were extensively used in the American automobile industry. Henry Ford took a special interest and Johansson spent several years in a post with the Ford Motor Company in Detroit, Michigan, until he returned to Sweden in 1936.[br]Principal Honours and DistinctionsHonorary Doctorates, Gustavus Adolphus College, St Peter and Wayne University, Detroit. Swedish Engineering Society John Ericsson Gold Medal. American Society of Mechanical Engineers Gold Medal.Further ReadingK.J.Hume, 1980, A History of Engineering Metrology, London, pp. 54–66 (a short biography).RTS -
5 gauge
( измерительный) прибор; датчик; толщина; калибр; измерять; калибровать, градуироватьC.I.T. gauge — указатель температуры на входе в компрессор
cabin air temperature gauge — термометр воздуха в кабине, кабинный термометр
exhaust gas temperature gauge — указатель температуры [термометр] выходящих газов [газов за турбиной]
fly on the gauges — разг. лететь по приборам
jet pipe temperature gauge — термометр [указатель температуры] выходящих газов [газов за турбиной]
r.p.m. gauge — тахометр, указатель числа оборотов
stay on the gauges — разг. оставаться в полете [продолжать полет] по приборам
temperature compensated strain gauge — термокомпенсированный тензометр [тензодатчик]
turbine gas temperature gauge — термометр [указатель температуры] газов в турбине
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6 Pratt, Francis Ashbury
[br]b. 15 February 1827 Woodstock, Vermont, USAd. 10 February 1902 Hartford, Connecticut, USA[br]American mechanical engineer and machine-tool manufacturer.[br]Francis A.Pratt served an apprenticeship as a machinist with Warren Aldrich, and on completing it in 1848 he entered the Gloucester Machine Works as a journeyman machinist. From 1852 to 1854 he worked at the Colt Armory in Hartford, Connecticut, where he met his future partner, Amos Whitney. He then became Superintendent of the Phoenix Iron Works, also at Hartford and run by George S.Lincoln \& Company. While there he designed the well-known "Lincoln" miller, which was first produced in 1855. This was a development of the milling machine built by Robbins \& Lawrence and designed by F.W. Howe, and incorporated a screw drive for the table instead of the rack and pinion used in the earlier machine.Whitney also moved to the Phoenix Iron Works, and in 1860 the two men 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, F.A.Pratt being elected President. The firm specialized in making machine tools and tools particularly for the armament industry. In the 1870s Pratt made no less than ten trips to Europe gaining orders for equipping armouries in many different countries. 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. Pratt remained President of the company until 1898, after which he served as their Consulting Engineer for a short time before retiring from professional life. He was granted a number of patents relating to machine tools. He was a founder member of the American Society of Mechanical Engineers in 1880 and was elected a vice-president in 1881. He was an alderman of the city of Hartford.[br]Principal Honours and DistinctionsVice-President, American Society of Mechanical Engineers 1881.Further ReadingJ.W.Roe, 1916, English and American Tool Builders, New Haven; reprinted 1926, New York, and 1987, Bradley, 111. (describes the origin and development of the Pratt \& Whitney Company).RTS -
7 Pihl, Carl Abraham
[br]b. 16 January 1825 Stavanger, Norwayd. 14 September 1897 Kristiania (now Oslo), Norway[br]Norwegian railway engineer, protagonist of narrow-gauge railways.[br]Pihl trained as an engineer at Göteborg, Sweden, and then moved to London, where he worked under Robert Stephenson during 1845 and 1846. In 1850 he returned to Norway and worked with the English contractors building the first railway in Norway, the Norwegian Trunk Railway from Kristiania to Eidsvold, for which the English standard gauge was used. Subsequently he worked in England for a year, but in 1856 joined the Norwegian government's Road Department, which was to have responsibility for railways. In 1865 a distinct Railway Department was set up, and Pihl became Director for State Railway Construction. Because of the difficulties of the terrain and limited traffic, Pihl recommended that in the case of two isolated lines to be built the outlay involved in ordinary railways would not be justified, and that they should be built to the narrow gauge of 3 ft 6 in. (1.07 m). His recommendation was accepted by the Government in 1857 and the two lines were built to this gauge and opened during 1861–4. Six of their seven locomotives, and all their rolling stock, were imported from Britain. The lines cost £3,000 and £5,000 per mile, respectively; a standard-gauge line built in the same period cost £6,400 per mile.Subsequently, many hundreds of miles of Norwegian railways were built to 3 ft 6 in. (1.07 m) gauge under Pihl's direction. They influenced construction of railways to this gauge in Australia, Southern Africa, New Zealand, Japan and elsewhere. However, in the late 1870s controversy arose in Norway over the economies that could in fact be gained from the 3 ft 6 in. (1,07 m) gauge. This controversy in the press, in discussion and in the Norwegian parliament became increasingly acrimonious during the next two decades; the standard-gauge party may be said to have won with the decision in 1898, the year after Pihl's death, to build the Bergen-Oslo line to standard gauge.[br]Principal Honours and DistinctionsKnight of the Order of St Olaf 1862; Commander of the Order of St Olaf 1877. Commander of the Royal Order of Vasa 1867. Royal Order of the Northern Star 1882.Further ReadingP.Allen and P.B.Whitehouse, 1959, Narrow Gauge Railways of Europe, Ian Allan (describes the Norwegian Battle of the Gauges).A biographical article on Pihl appears (in Norwegian) in Norsk Biografisk Leksikon.PJGR -
8 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 -
9 gauge
------------------------------------------------------------[English Word] carpenter's marking gauge (for scribing lines parallel to the edge of a board).[English Plural] gauges[Swahili Word] mahati[Part of Speech] noun------------------------------------------------------------[English Word] gauge[English Plural] gauges[Swahili Word] kipimo[Swahili Plural] vipimo[Part of Speech] noun[Class] 7/8[Derived Language] Swahili[Derived Word] -pima------------------------------------------------------------[English Word] marking gauge[English Plural] gauges[Swahili Word] mahati[Swahili Plural] mahati[Part of Speech] noun[Class] 9/10------------------------------------------------------------[English Word] water gauge[English Plural] water gauges[Swahili Word] kipimo cha maji[Swahili Plural] vipimo vya maji[Part of Speech] noun[Class] 7/8[Derived Language] Swahili[Derived Word] -pima[Related Words] maji------------------------------------------------------------[English Word] water gauge[English Plural] gauges[Swahili Word] pimamaji[Swahili Plural] pimamaji[Part of Speech] noun[Class] 9/10------------------------------------------------------------[English Word] water gauge[English Plural] gauges[Swahili Word] pimasharazi[Swahili Plural] pimasharazi[Part of Speech] noun[Class] 9/10[Note] rare------------------------------------------------------------ -
10 Spooner, Charles Easton
[br]b. 1818 Maentwrog, Merioneth (now Gwynedd), Walesd. 18 November 1889 Portmadoc (now Porthmadog), Wales[br]English engineer, pioneer of narrow-gauge steam railways.[br]At the age of 16 Charles Spooner helped his father, James, to build the Festiniog Railway, a horse-and-gravity tramroad; they maintained an even gradient and kept costs down by following a sinuous course along Welsh mountainsides and using a very narrow gauge. This was probably originally 2 ft 1 in. (63.5 cm) from rail centre to rail centre; with the introduction of heavier, and therefore wider, rails the gauge between them was reduced and was eventually standardized at 1 ft 11 1/2 in (60 cm). After James Spooner's death in 1856 Charles Spooner became Manager and Engineer of the Festiniog Railway and sought to introduce steam locomotives. Widening the gauge was impracticable, but there was no precedent for operating a public railway of such narrow gauge by steam. Much of the design work for locomotives for the Festiniog Railway was the responsibility of C.M.Holland, and many possible types were considered: eventually, in 1863, two very small 0–4–0 tank locomotives, with tenders for coal, were built by George England.These locomotives were successful, after initial problems had been overcome, and a passenger train service was introduced in 1865 with equal success. The potential for economical operation offered by such a railway attracted widespread attention, the more so because it had been effectively illegal to build new passenger railways in Britain to other than standard gauge since the Gauge of Railways Act of 1846.Spooner progressively improved the track, alignment, signalling and rolling stock of the Festiniog Railway and developed it from a tramroad to a miniaturized main line. Increasing traffic led to the introduction in 1869 of the 0–4–4–0 double-Fairlie locomotive Little Wonder, built to the patent of Robert Fairlie. This proved more powerful than two 0–4–0s and impressive demonstrations were given to engineers from many parts of the world, leading to the widespread adoption of narrow-gauge railways. Spooner himself favoured a gauge of 2 ft 6 in. (76 cm) or 2 ft 9 in. (84 cm). Comparison of the economy of narrow gauges with the inconvenience of a break of gauge at junctions with wider gauges did, however, become a continuing controversy, which limited the adoption of narrow gauges in Britain.Bogie coaches had long been used in North America but were introduced to Britain by Spooner in 1872, when he had two such coaches built for the Festiniog Railway. Both of these and one of its original locomotives, though much rebuilt, remain in service.Spooner, despite some serious illnesses, remained Manager of the Festiniog Railway until his death.[br]Bibliography1869, jointly with G.A.Huddart, British patent no. 1,487 (improved fishplates). 1869, British patent no. 2,896 (rail-bending machinery).1871, Narrow Gauge Railways, E. \& F.N.Spon (includes his description of the Festiniog Railway, reports of locomotive trials and his proposals for narrow-gauge railways).Further ReadingJ.I.C.Boyd, 1975, The Festiniog Railway, Blandford: Oakwood Press; C.E.Lee, 1945, Narrow-Gauge Railways in North Wales, The Railway Publishing Co. (both give good descriptions of Spooner and the Festiniog Railway).C.Hamilton Ellis, 1965, Railway Carriages in the British Isles, London: George Allen \& Unwin, pp. 181–3. Pihl, Carl Abraham.PJGRBiographical history of technology > Spooner, Charles Easton
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11 Bond, George Meade
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 17 July 1852 Newburyport, Massachusetts, USAd. 6 January 1935 Hartford, Connecticut, USA[br]American mechanical engineer and metrologist, co-developer of the Rogers- Bond Comparator.[br]After leaving school at the age of 17, George Bond taught in local schools for a few years before starting an apprenticeship in a machine shop in Grand Rapids, Michigan. He then worked as a machinist with Phoenix Furniture Company in that city until his savings permitted him to enter the Stevens Institute of Technology at Hoboken, New Jersey, in 1876. He graduated with the degree of Mechanical Engineer in 1880. In his final year he assisted William A.Rogers, Professor of Astronomy at Harvard College Observatory, Cambridge, Massachusetts, in the design of a comparator for checking standards of length. In 1880 he joined the Pratt \& Whitney Company, Hartford, Connecticut, and was Manager of the Standards and Gauge Department from then until 1902. During this period he developed cylindrical, calliper, snap, limit, thread and other gauges. He also designed the Bond Standard Measuring Machine. Bond was elected a member of the American Society of Mechanical Engineers in 1881 and of the American Society of Civil Engineers in 1887, and served on many of their committees relating to standards and units of measurement.[br]Principal Honours and DistinctionsVice-President, American Society of Mechanical Engineers 1908–10. Honorary degrees of DEng, Stevens Institute of Technology 1921, and MSc, Trinity College, Hartford, 1927.Bibliography1881. "Standard measurements", Transactions of the American Society of Mechanical Engineers 2:81.1882. "A standard gauge system", Transactions of the American Society of MechanicalEngineers 3:122.1886, "Standard pipe and pipe threads", Transactions of the American Society of Mechanical Engineers 7:311.1887. Standards of Length and Their Practical Application, Hartford.Further Reading"Report of the Committee on Standards and Gauges", 1883, Transactions of the American Society of Mechanical Engineers 4:21–9 (describes the Rogers-Bond Comparator).RTS -
12 Kier
Large metal vessels in which fabrics are boiled and bleached. They are of two main types - The open and the closed - and are constructed in a variety of forms. In both types the circulation is induced by boiling, or by the additional aid of an injector or a centrifugal pump. The high-pressure (closed) kier represents the main principle involved. There are two forms of circulation in the kier - one by the liquor passing up a central pipe, and then spreading over the goods, the other and more general type of circulation is by the liquor being pumped from the bottom of the kier to an outside superheater, up this, and so to the top of the kier, impinging on to a metal dish, which distributes the lye as a spray over the cloth, the pump at the bottom of the kier sucking it through the cloth and forcing it up the superheater. The kier is supplied with a thick perforated false iron bottom. The cloth when piled down (average amount in kier three tons) is then covered over with loose canvas and held down by heavy chains fastened to the inside of the kier. The kiers are fitted with temperature and pressure gauges - The pressure varying according to the type of bleach required, as well as the quantity of the cloth under treatment. -
13 Fairlie, Robert Francis
[br]b. March 1831 Scotlandd. 31 July 1885 Clapham, London, England[br]British engineer, designer of the double-bogie locomotive, advocate of narrow-gauge railways.[br]Fairlie worked on railways in Ireland and India, and established himself as a consulting engineer in London by the early 1860s. In 1864 he patented his design of locomotive: it was to be carried on two bogies and had a double boiler, the barrels extending in each direction from a central firebox. From smokeboxes at the outer ends, return tubes led to a single central chimney. At that time in British practice, locomotives of ever-increasing size were being carried on longer and longer rigid wheelbases, but often only one or two of their three or four pairs of wheels were powered. Bogies were little used and then only for carrying-wheels rather than driving-wheels: since their pivots were given no sideplay, they were of little value. Fairlie's design offered a powerful locomotive with a wheelbase which though long would be flexible; it would ride well and have all wheels driven and available for adhesion.The first five double Fairlie locomotives were built by James Cross \& Co. of St Helens during 1865–7. None was particularly successful: the single central chimney of the original design had been replaced by two chimneys, one at each end of the locomotive, but the single central firebox was retained, so that exhaust up one chimney tended to draw cold air down the other. In 1870 the next double Fairlie, Little Wonder, was built for the Festiniog Railway, on which C.E. Spooner was pioneering steam trains of very narrow gauge. The order had gone to George England, but the locomotive was completed by his successor in business, the Fairlie Engine \& Steam Carriage Company, in which Fairlie and George England's son were the principal partners. Little Wonder was given two inner fireboxes separated by a water space and proved outstandingly successful. The spectacle of this locomotive hauling immensely long trains up grade, through the Festiniog Railway's sinuous curves, was demonstrated before engineers from many parts of the world and had lasting effect. Fairlie himself became a great protagonist of narrow-gauge railways and influenced their construction in many countries.Towards the end of the 1860s, Fairlie was designing steam carriages or, as they would now be called, railcars, but only one was built before the death of George England Jr precipitated closure of the works in 1870. Fairlie's business became a design agency and his patent locomotives were built in large numbers under licence by many noted locomotive builders, for narrow, standard and broad gauges. Few operated in Britain, but many did in other lands; they were particularly successful in Mexico and Russia.Many Fairlie locomotives were fitted with the radial valve gear invented by Egide Walschaert; Fairlie's role in the universal adoption of this valve gear was instrumental, for he introduced it to Britain in 1877 and fitted it to locomotives for New Zealand, whence it eventually spread worldwide. Earlier, in 1869, the Great Southern \& Western Railway of Ireland had built in its works the first "single Fairlie", a 0–4–4 tank engine carried on two bogies but with only one of them powered. This type, too, became popular during the last part of the nineteenth century. In the USA it was built in quantity by William Mason of Mason Machine Works, Taunton, Massachusetts, in preference to the double-ended type.Double Fairlies may still be seen in operation on the Festiniog Railway; some of Fairlie's ideas were far ahead of their time, and modern diesel and electric locomotives are of the powered-bogie, double-ended type.[br]Bibliography1864, British patent no. 1,210 (Fairlie's master patent).1864, Locomotive Engines, What They Are and What They Ought to Be, London; reprinted 1969, Portmadoc: Festiniog Railway Co. (promoting his ideas for locomotives).1865, British patent no. 3,185 (single Fairlie).1867. British patent no. 3,221 (combined locomotive/carriage).1868. "Railways and their Management", Journal of the Society of Arts: 328. 1871. "On the Gauge for Railways of the Future", abstract in Report of the FortiethMeeting of the British Association in 1870: 215. 1872. British patent no. 2,387 (taper boiler).1872, Railways or No Railways. "Narrow Gauge, Economy with Efficiency; or Broad Gauge, Costliness with Extravagance", London: Effingham Wilson; repr. 1990s Canton, Ohio: Railhead Publications (promoting the cause for narrow-gauge railways).Further ReadingFairlie and his patent locomotives are well described in: P.C.Dewhurst, 1962, "The Fairlie locomotive", Part 1, Transactions of the Newcomen Society 34; 1966, Part 2, Transactions 39.R.A.S.Abbott, 1970, The Fairlie Locomotive, Newton Abbot: David \& Charles.PJGRBiographical history of technology > Fairlie, Robert Francis
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14 Dickinson, John
SUBJECT AREA: Paper and printing[br]b. 29 March 1782d. 11 January 1869 London, England[br]English papermaker and inventor of a papermaking machine.[br]After education at a private school, Dickinson was apprenticed to a London stationer. In 1806 he started in business as a stationer, in partnership with George Longman; they transferred to 65 Old Bailey, where the firm remained until their premises were destroyed during the Second World War. In order to secure the supply of paper and be less dependent on the papermakers, Dickinson turned to making paper on his own account. In 1809 he acquired Apsley Mill, near Hemel Hempstead on the river Gade in Hertfordshire. There, he produced a new kind of paper for cannon cartridges which, unlike the paper then in use, did not smoulder, thus reducing the risk of undesired explosions. The new paper proved very useful during the Napoleonic War.Dickinson developed a continuous papermaking machine about the same time as the Fourdrinier brothers, but his worked on a different principle. Instead of a continuous flat wire screen, Dickinson used a wire-covered cylinder which dipped into the dilute pulp as it revolved. A felt-covered roller removed the layer of wet pulp, which was then subjected to drying, as in the Fourdrinier machine. The latter was first in use at Frogmore, just upstream from Apsley Mill on the river Gade. Dickinson patented his machine in 1809 and claimed that it was superior for some kinds of paper. In feet, both types of machine have survived, in much enlarged and modified form: the Fourdrinier for general papermaking, the Dickinson cylinder for the making of board. In 1810 Dickinson acquired the nearby Nash Mill, and over the years he extended the scope of his papermaking business, introducing many technical improvements. Among his inventions was a machine to paste together continuous webs of paper to form cardboard. Another, patented in 1829, was a process for incorporating threads of cotton, flax or silk into the body of the paper to make forgery more difficult. He became increasingly prosperous, overcoming labour disputes with unemployed hand-papermakers. and lawsuits against a canal company which threatened the water supply to his mills. Dickinson was the first to use percolation gauges to predict river flow, and his work on water supply brought him election to a Fellowship of the Royal Society in 1845.[br]Principal Honours and DistinctionsFRS 1845.Further ReadingR.H.Clapperton, 1967, The Paper-making Machine, Oxford: Pergamon Press, pp. 331–5 (provides a biography and full details of Dickinson's inventions).LRD -
15 Root, Elisha King
[br]b. 10 May 1808 Ludlow, Massachusetts, USAd. 31 August 1865 Hartford, Connecticut, USA[br]American mechanical engineer and inventor.[br]After an elementary education, Elisha K.Root was apprenticed as a machinist and worked in that occupation at Ware and Chicopee Falls, Massachusetts. In 1832 he went to Collinsville, Connecticut, to join the Collins Company, manufacturers of axes. He started as a lathe hand but soon became Foreman and, in 1845, Superintendent. While with the company, he devised and patented special-purpose machinery for forming axes which transformed the establishment from a primitive workshop to a modern factory.In 1849 Root was offered positions by four different manufacturers and accepted the post of Superintendent of the armoury then being planned at Hartford, Connecticut, by Samuel Colt for the manufacture of his revolver pistol, which he had invented in 1835. Initial acceptance of the revolver was slow, but by the mid1840s Colt had received sufficient orders to justify the establishment of a new factory and Root was engaged to design and install the machinery. The principle of interchangeable manufacture was adopted, and Root devised special machines for boring, rifling, making cartridges, etc., and a system of jigs, fixtures, tools and gauges. One of these special machines was a drop hammer that he invented and patented in 1853 and which established the art of die-forging on a modern basis. He was also associated with F.A. Pratt in the design of the "Lincoln" milling machine in 1855.When Colt died in 1862, Root became President of the company and continued in that capacity until his own death. It was said that he was one of the ablest and most highly paid mechanics from New England and that he was largely responsible for the success of both the Collins and the Colt companies.[br]Further ReadingJ.W.Roe, 1916, English and American Tool Builders, New Haven; reprinted 1926, New York, and 1987, Bradley, Ill. (describes Root's work at the Colt Armory).Paul Uselding, 1974, "Elisha K.Root, Forging, and the “American System”", "Elisha K.Root, forging, and the “American System”", Technology and Culture 15:543–68 (provides further biographical details, his work with the Collins Company and a list of his patents).RTS -
16 Whitworth, Sir Joseph
[br]b. 21 December 1803 Stockport, Cheshire, Englandd. 22 January 1887 Monte Carlo, Monaco[br]English mechanical engineer and pioneer of precision measurement.[br]Joseph Whitworth received his early education in a school kept by his father, but from the age of 12 he attended a school near Leeds. At 14 he joined his uncle's mill near Ambergate, Derbyshire, to learn the business of cotton spinning. In the four years he spent there he realized that he was more interested in the machinery than in managing a cotton mill. In 1821 he obtained employment as a mechanic with Crighton \& Co., Manchester. In 1825 he moved to London and worked for Henry Maudslay and later for the Holtzapffels and Joseph Clement. After these years spent gaining experience, he returned to Manchester in 1833 and set up in a small workshop under a sign "Joseph Whitworth, Tool Maker, from London".The business expanded steadily and the firm made machine tools of all types and other engineering products including steam engines. From 1834 Whitworth obtained many patents in the fields of machine tools, textile and knitting machinery and road-sweeping machines. By 1851 the company was generally regarded as the leading manufacturer of machine tools in the country. Whitworth was a pioneer of precise measurement and demonstrated the fundamental mode of producing a true plane by making surface plates in sets of three. He advocated the use of the decimal system and made use of limit gauges, and he established a standard screw thread which was adopted as the national standard. In 1853 Whitworth visited America as a member of a Royal Commission and reported on American industry. At the time of the Crimean War in 1854 he was asked to provide machinery for manufacturing rifles and this led him to design an improved rifle of his own. Although tests in 1857 showed this to be much superior to all others, it was not adopted by the War Office. Whitworth's experiments with small arms led on to the construction of big guns and projectiles. To improve the quality of the steel used for these guns, he subjected the molten metal to pressure during its solidification, this fluid-compressed steel being then known as "Whitworth steel".In 1868 Whitworth established thirty annual scholarships for engineering students. After his death his executors permanently endowed the Whitworth Scholarships and distributed his estate of nearly half a million pounds to various educational and charitable institutions. Whitworth was elected an Associate of the Institution of Civil Engineers in 1841 and a Member in 1848 and served on its Council for many years. He was elected a Member of the Institution of Mechanical Engineers in 1847, the year of its foundation.[br]Principal Honours and DistinctionsBaronet 1869. FRS 1857. President, Institution of Mechanical Engineers 1856, 1857 and 1866. Hon. LLD Trinity College, Dublin, 1863. Hon. DCL Oxford University 1868. Member of the Smeatonian Society of Civil Engineers 1864. Légion d'honneur 1868. Society of Arts Albert Medal 1868.Bibliography1858, Miscellaneous Papers on Mechanical Subjects, London; 1873, Miscellaneous Papers on Practical Subjects: Guns and Steel, London (both are collections of his papers to technical societies).1854, with G.Wallis, The Industry of the United States in Machinery, Manufactures, andUseful and Ornamental Arts, London.Further ReadingF.C.Lea, 1946, A Pioneer of Mechanical Engineering: Sir Joseph Whitworth, London (a short biographical account).A.E.Musson, 1963, "Joseph Whitworth: toolmaker and manufacturer", Engineering Heritage, Vol. 1, London, 124–9 (a short biography).D.J.Jeremy (ed.), 1984–6, Dictionary of Business Biography, Vol. 5, London, 797–802 (a short biography).W.Steeds, 1969, A History of Machine Tools 1700–1910, Oxford (describes Whitworth's machine tools).RTS -
17 Gulf
nounthe [Arabian or Persian] Gulf — der [Persische] Golf
2) (wide difference) Kluft, die3) (chasm) Abgrund, der* * *(a part of the sea with land round a large part of it: the Gulf of Mexico.) der Golf* * *[gʌlf]nthe G\gulf of Alaska/Gascony/Mexico der Golf von Alaska/Gascogne/Mexiko2. (Persian Gulf)▪ the G\gulf der [Persische] Golfthe G\gulf states die Golfstaaten plto bridge a \gulf ( fig) eine Kluft überbrücken [o schließen]* * *[gʌlf]n* * *G., g. abk2. gelding5. Gulf* * *nounthe [Arabian or Persian] Gulf — der [Persische] Golf
2) (wide difference) Kluft, die3) (chasm) Abgrund, der* * *n.Abgrund -¨e m. -
18 Baldwin, Matthias William
[br]b. 10 November 1795 Elizabethtown, New Jersey, USAd. 7 September 1866 Philadelphia, Pennsylvania, USA[br]American builder of steam locomotives, founder of Baldwin Locomotive Works.[br]After apprenticeship as a jeweller, Baldwin set up a machinery manufacturing business, and built stationary steam engines and, in 1832, his first locomotive, Old Ironsides, for the then-new Philadelphia, Germantown \& Norristown Railroad. Old Ironsides achieved only 1 mph (1.6 km/h) on trial, but after experimentation reached 28 mph (45 km/h). Over the next ten years Baldwin built many stationary engines and ten more locomotives, and subsequently built locomotives exclusively.He steadily introduced detail improvements in locomotive design; standardized components by means of templates and gauges from 1838 onwards; introduced the cylinder cast integrally with half of the smokebox saddle in 1858; and in 1862 imported steel tyres, which had first been manufactured in Germany by Krupp of Essen in 1851, and began the practice in the USA of shrinking them on to locomotive wheels. At the time of Matthias Baldwin's death, the Baldwin Locomotive Works had built some 1,500 locomotives: it went on to become the largest locomotive building firm to develop from a single foundation, and by the time it built its last steam locomotive, in 1955, had produced about 75,000 in total.[br]Further ReadingJ.H.White Jr, 1979, A History of the American Locomotive—Its Development 1830–1880, New York: Dover Publications Inc.J.Marshall, 1978, A Biographical Dictionary of Railway Engineers, Newton Abbot: David \& Charles.Dictionary of American Biography.PJGRBiographical history of technology > Baldwin, Matthias William
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19 test marketing
Mktgthe use of a smallscale version of a marketing plan, usually in a restricted area or with a small group, to test the marketing strategy for a new product. Test marketing gauges both the success of the marketing strategy and the reactions of consumers to a new product by giving an indication of the potential response to a product nationwide. Test marketing avoids the costs of a full-scale launch of an untested product, but a drawback is that both the product and marketing plan are exposed to competitors. -
20 Starrett, Laroy S.
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 25 April 1836 China, Maine, USAd. 23 April 1922 St Petersburg, Florida, USA[br]American inventor and tool manufacturer.[br]As a youth, Laroy S.Starrett worked on his father's farm and later on other farms, and after a few years acquired his own 600-acre stock farm at Newburyport, Massachusetts, which he operated for four years. He had an interest in mechanics and in 1865 invented and patented a device for chopping meat. He arranged for this to be manufactured by the Athol Machine Company at Athol, Massachusetts, and it was so successful that three years later he sold his farm and purchased a controlling interest in the company. He reorganized the company for the manufacture of his meat chopper and two other inventions of his, a washing machine and a butter worker, which he had also patented in 1865. In 1877 Starrett invented the combination square and in 1880 he established the L.S.Starrett Company in Athol for manufacturing it and other small tools, such as steel rules and tapes, callipers, dividers, micrometers and depth gauges, etc. The business expanded and by 1906 he was employing over 1,000 people. He established agencies in Britain and other countries, and Starrett tools were sold throughout the world.[br]Further ReadingK.J.Hume, 1980, A History of Engineering Me-trology, London, 133–4 (provides a short account of L.S.Starrett and his company).RTS
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