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precision+manufacture+of+machine+tools

  • 1 precision manufacture of machine tools

    Универсальный англо-русский словарь > precision manufacture of machine tools

  • 2 precision manufacture of machine tools

    English-Russian dictionary of mechanical engineering and automation > precision manufacture of machine tools

  • 3 manufacture

    English-Russian dictionary of mechanical engineering and automation > manufacture

  • 4 прецизионное изготовление станков

    Русско-английский исловарь по машиностроению и автоматизации производства > прецизионное изготовление станков

  • 5 прецизионное изготовление станков

    Универсальный русско-английский словарь > прецизионное изготовление станков

  • 6 Maudslay, Henry

    [br]
    b. 22 August 1771 Woolwich, Kent, England
    d. 15 February 1831 Lambeth, London, England
    [br]
    English precision toolmaker and engineer.
    [br]
    Henry Maudslay was the third son of an ex-soldier and storekeeper at Woolwich Arsenal. At the age of 12 he was employed at the Arsenal filling cartridges; two years later he was transferred to the woodworking department, adjacent to the smithy, to which he moved when 15 years old. He was a rapid learner, and three years later Joseph Bramah took him on for the construction of special tools required for the mass-production of his locks. Maudslay was thus employed for the next eight years. He became Bramah's foreman, married his housekeeper, Sarah Tindale, and, unable to better himself, decided to leave and set up on his own. He soon outgrew his first premises in Wells Street and moved to Margaret Street, off Oxford Street, where some examples of his workmanship were displayed in the window. These caught the attention of a visiting Frenchman, de Bacquancourt; he was a friend of Marc Isambard Brunel, who was then in the early stages of designing the block-making machinery later installed at Portsmouth dockyard.
    Brunel wanted first a set of working models, as he did not think that the Lords of the Admiralty would be capable of understanding engineering drawings; Maudslay made these for him within the next two years. Sir Samuel Bentham, Inspector-General of Naval Works, agreed that Brunel's system was superior to the one that he had gone some way in developing; the Admiralty approved, and an order was placed for the complete plant. The manufacture of the machinery occupied Maudslay for the next six years; he was assisted by a draughtsman whom he took on from Portsmouth dockyard, Joshua Field (1786–1863), who became his partner in Maudslay, Son and Field. There were as many as eighty employees at Margaret Street until, in 1810, larger premises became necessary and a new works was built at Lambeth Marsh where, eventually, there were up to two hundred workers. The new factory was flanked by two houses, one of which was occupied by Maudslay, the other by Field. The firm became noted for its production of marine steam-engines, notably Maudslay's table engine which was first introduced in 1807.
    Maudslay was a consummate craftsman who was never happier than when working at his bench or at a machine tool; he was also one of the first engineers to appreciate the virtues of standardization. Evidence of this appreciation is to be found in his work in the development of the Bramah lock and then on the machine tools for the manufacture of ship's blocks to Marc Brunel's designs; possibly his most important contribution was the invention in 1797 of the metal lathe. He made a number of surface plates of the finest quality. The most celebrated of his numerous measuring devices was a micrometer-based machine which he termed his "Lord Chancellor" because, in the machine shop, it represented the "final court of appeal", measuring to one-thousandth of an inch.
    [br]
    Further Reading
    1934–5, "Maudslay, Sons \& Field as general engineers", Transactions of the Newcomen Society 15, London.
    1963, Engineering Heritage, Vol. 1, London: Institution of Mechanical Engineers. L.T.C.Rolt, 1965, Tools for the Job, London: Batsford.
    W.Steeds, 1969, A History of Machine Tools 1700–1910, Oxford: Oxford University Press.
    IMcN

    Biographical history of technology > Maudslay, Henry

  • 7 Brown, Joseph Rogers

    [br]
    b. 26 January 1810 Warren, Rhode Island, USA
    d. 23 July 1876 Isles of Shoals, New Hampshire, USA
    [br]
    American machine-tool builder and co-founder of Brown \& Sharpe.
    [br]
    Joseph Rogers Brown was the eldest son of David Brown, who was modestly established as a maker of and dealer in clocks and watches. Joseph assisted his father during school vacations and at the age of 17 left to obtain training as a machinist. In 1829 he joined his father in the manufacture of tower clocks at Pawtucket, Rhode Island, and two years later went into business for himself in Pawtucket making lathes and small tools. In 1833 he rejoined his father in Providence, Rhode Island, as a partner in the manufacture of docks, watches and surveying and mathematical instruments. David Brown retired in 1841.
    J.R.Brown invented and built in 1850 a linear dividing engine which was the first automatic machine for graduating rules in the United States. In 1851 he brought out the vernier calliper, the first application of a vernier scale in a workshop measuring tool. Lucian Sharpe was taken into partnership in 1853 and the firm became J.R.Brown \& Sharpe; in 1868 the firm was incorporated as the Brown \& Sharpe Manufacturing Company.
    In 1855 Brown invented a precision gear-cutting machine to make clock gears. The firm obtained in 1861 a contract to make Wilcox \& Gibbs sewing machines and gave up the manufacture of clocks. At about this time F.W. Howe of the Providence Tool Company arranged for Brown \& Sharpe to make a turret lathe required for the manufacture of muskets. This was basically Howe's design, but Brown added a few features, and it was the first machine tool built for sale by the Brown \& Sharpe Company. It was followed in 1862 by the universal milling machine invented by Brown initially for making twist drills. Particularly for cutting gear teeth, Brown invented in 1864 a formed milling cutter which could be sharpened without changing its profile. In 1867 the need for an instrument for checking the thickness of sheet material became apparent, and in August of that year J.R.Brown and L.Sharpe visited the Paris Exhibition and saw a micrometer calliper invented by Jean Laurent Palmer in 1848. They recognized its possibilities and with a few developments marketed it as a convenient, hand-held measuring instrument. Grinding lathes were made by Brown \& Sharpe in the early 1860s, and from 1868 a universal grinding machine was developed, with the first one being completed in 1876. The patent for this machine was granted after Brown's sudden death while on holiday.
    [br]
    Further Reading
    J.W.Roe, 1916, English and American Tool Builders, New Haven: Yale University Press; repub. 1926, New York and 1987, Bradley, Ill.: Lindsay Publications Inc. (further details of Brown \& Sharpe Company and their products).
    R.S.Woodbury, 1958, History of the Gear-Cutting Machine, Cambridge, Mass.: MIT Press ——, 1959, History of the Grinding Machine, Cambridge, Mass.: MIT Press.
    ——, 1960, History of the Milling Machine, Cambridge, Mass.: MIT Press.
    RTS

    Biographical history of technology > Brown, Joseph Rogers

  • 8 Lawrence, Richard Smith

    SUBJECT AREA: Weapons and armour
    [br]
    b. 22 November 1817 Chester, Vermont, USA
    d. 10 March 1892 Hartford, Connecticut, USA
    [br]
    American gunsmith and inventor.
    [br]
    Richard S.Lawrence received only an elementary education and as a young man worked on local farms and later in a woodworking shop. His work there included making carpenters' and joiners' tools and he spent some of his spare time in a local gunsmith's shop. After a brief period of service in the Army, he obtained employment in 1838 with N.Kendall \& Co. of Windsor, Vermont, making guns at the Windsor prison. Within six months he was put in charge of the work, continuing in this position until 1842 when the gun-making ceased; he remained at the prison for a time in charge of the carriage shop. In 1843 he opened a gun shop in Windsor in partnership with Kendall, and the next year S.E. Robbins, a businessman, helped them obtain a contract from the Federal Government for 10,000 rifles. A new company, Robbins, Kendall \& Lawrence, was formed and a factory was built at Windsor. Three years later Kendall's share of the business was purchased by his partners and the firm became Robbins \& Lawrence. Lawrence supervised the design and production and, to improve methods of manufacture, developed new machine tools with the aid of F.W. Howe. In 1850 Lawrence introduced the lubrication of bullets, which practice ensured the success of the breech-loading rifle. Also in 1850, the company undertook to manufacture railway cars, but this involved them in a considerable financial loss. The company took to the Great Exhibition of 1851 in London, England, a set of rifles built on the interchangeable system. The interest this created resulted in a visit of some members of the British Royal Small Arms Commission to America and subsequently an order for 150 machine tools, jigs and fixtures from Robbins \& Lawrence, to be installed at the small-arms factory at Enfield. In 1852 the company contracted to manufacture Sharps rifles and carbines at a new factory to be built at Hartford, Connecticut. Lawrence moved to Hartford in 1853 to superintend the building and equipment of the plant. Shortly afterwards, however, a promised order for a large number of rifles failed to materialize and, following its earlier financial difficulties, Robbins \& Lawrence was forced into bankruptcy. The Hartford plant was acquired by the Sharps Rifle Company in 1856 and Lawrence remained there as Superintendent until 1872. From then he was for many years Superintendent of Streets in the city of Hartford and he also served on the Water Board, the Board of Aldermen and as Chairman of the Fire Board.
    [br]
    Further Reading
    J.W.Roe, 1916, English and American Tool Builders, New Haven; repub. 1926, New York; and 1987, Bradley, Ill. (provides biographical information and includes in an Appendix (pp. 281–94) autobiographical notes written by Richard S.Lawrence in 1890).
    Merritt Roe Smith, 1974, "The American Precision Museum", Technology and Culture 15 (3): 413–37 (for information on Robbins \& Lawrence and products).
    RTS

    Biographical history of technology > Lawrence, Richard Smith

  • 9 Renold, Hans

    [br]
    b. 31 July 1852 Aarau, Switzerland
    d. 2 May 1943 Grange-over-Sands, Lancashire, England
    [br]
    Swiss (naturalized British 1881) mechanical engineer, inventor and pioneer of the precision chain industry.
    [br]
    Hans Renold was educated at the cantonal school of his native town and at the Polytechnic in Zurich. He worked in two or three small workshops during the polytechnic vacations and served an apprenticeship of eighteen months in an engineering works at Neuchâtel, Switzerland. After a short period of military service he found employment as a draughtsman in an engineering firm at Saint-Denis, near Paris, from 1871 to 1873. In 1873 Renold moved first to London and then to Manchester as a draughtsman and inspector with a firm of machinery exporters. From 1877 to 1879 he was a partner in his own firm of machine exporters. In 1879 he purchased a small firm in Salford making chain for the textile industry. At about this time J.K.Starley introduced the "safety" bicycle, which, however, lacked a satisfactory drive chain. Renold met this need with the invention of the bush roller chain, which he patented in 1880. The new chain formed the basis of the precision chain industry: the business expanded and new premises were acquired in Brook Street, Manchester, in 1881. In the same year Renold became a naturalized British subject.
    Continued expansion of the business necessitated the opening of a new factory in Brook Street in 1889. The factory was extended in 1895, but by 1906 more accommodation was needed and a site of 11 ½ acres was acquired in the Manchester suburb of Burnage: the move to the new building was finally completed in 1914. Over the years, further developments in the techniques of chain manufacture were made, including the invention in 1895 of the inverted tooth or silent chain. Renold made his first visit to America in 1891 to study machine-tool developments and designed for his own works special machine tools, including centreless grinding machines for dealing with wire rods up to 10 ft (3 m) in length.
    The business was established as a private limited company in 1903 and merged with the Coventry Chain Company Ltd in 1930. Good industrial relations were always of concern to Renold and he established a 48-hour week as early as 1896, in which year a works canteen was opened. Joint consultation with shop stewards date2 from 1917. Renold was elected a Member of the Institution of Mechanical Engineers in 1902 and in 1917 he was made a magistrate of the City of Manchester.
    [br]
    Principal Honours and Distinctions
    Honorary DSc University of Manchester 1940.
    Further Reading
    Basil H.Tripp, 1956, Renold Chains: A History of the Company and the Rise of the Precision Chain Industry 1879–1955, London.
    J.J.Guest, 1915, Grinding Machinery, London, pp. 289, 380 (describes grinding machines developed by Renold).
    RTS

    Biographical history of technology > Renold, Hans

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