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iron+cylinder

  • 21 plancha2

    2 = griddle, hotplate.
    Ex. The griddle is ready when a few drops of water sprinkled on it form fast-moving bubbles.
    Ex. This range of hotplates covers a variety of sizes in cast iron and aluminium on request.
    ----
    * a la plancha = griddled, on the griddle, on the hotplate.
    * asar a la plancha = griddle.
    * filete a la plancha = griddled steak.
    * hacer una plancha a partir de un molde = cast + plate + from mould.
    * impresión en plancha de madera = woodblock printing.
    * litografía en plancha de zinc = zinc-plate lithograph.
    * número de plancha = plate number.
    * plancha cilíndrica = plate cylinder.
    * plancha de cobre para la impresión en huecograbado = intaglio copperplate.
    * plancha de cocinar = griddle, hotplate.
    * plancha de estereotipia = stereotype plate.
    * plancha de impresión = plate, printing plate.
    * plancha de impresión de cobre = copperplate.
    * plancha de impresión de latón = pewter plate.
    * plancha de impresión en relieve de cobre = engraved copper plate.
    * plancha de impresión litográfica = lithographic plate.
    * plancha del techo = ceiling tile.
    * plancha de madera = wood block [woodblock].
    * plancha de moqueta = carpet tile.
    * plancha de zinc = zinc plate.
    * plancha eléctrica = electric hotplate.
    * plancha eléctrica de cocinar = electric hotplate.
    * plancha para hacer gofres = waffle iron.
    * plancha xilográfica = relief woodcut.
    * plancha zincográfica = zincograph.
    * preparar a la plancha = griddle.

    Spanish-English dictionary > plancha2

  • 22 Bell, Thomas

    SUBJECT AREA: Paper and printing
    [br]
    fl. 1770–1785 Scotland
    [br]
    Scottish inventor of a calico printing machine with the design engraved on rollers.
    [br]
    In November 1770, John Mackenzie, owner of a bleaching mill, took his millwright Thomas Bell to Glasgow to consult with James Watt about problems they were having with the calico printing machine invented by Bell some years previously. Bell rolled sheets of copper one eighth of an inch (3 mm) thick into cyliders, and filled them with cement which was held in place by cast iron ends. After being turned true and polished, the cylinders were engraved; they cost about £10 each. The printing machines were driven by a water-wheel, but Bell and Mackenzie appeared to have had problems with the doctor blades which scraped off excess colour, and this may have been why they visited Watt.
    They had, presumably, solved the technical problems when Bell took out a patent in 1783 which describes him as "the Elder", but there are no further details about the man himself. The machine is described as having six printing rollers arranged around the top of the circumference of a large central bowl. In later machines, the printing rollers were placed all round a smaller cylinder. All of the printing rollers, each printing a different colour, were driven by gearing to keep them in register. The patent includes steel doctor blades which would have scraped excess colour off the printing rollers. Another patent, taken out in 1784, shows a smaller three-colour machine. The printing rollers had an iron core covered with copper, which could be taken off at pleasure so that fresh patterns could be cut as desired. Bell's machine was used at Masney, near Preston, England, by Messrs Livesey, Hargreaves, Hall \& Co in 1786. Although copper cylinders were difficult to make and engrave, and the soldered seams often burst, these machines were able to increase the output of the cheaper types of printed cloth.
    [br]
    Bibliography
    1783, patent no. 1,378 (calico printing machine with engraved copper rollers). 1784, patent no. 1,443 (three-colour calico printing machine).
    Further Reading
    W.E.A.Axon, 1886, Annals of Manchester, Manchester (provides an account of the invention).
    R.L.Hills, 1970, Power in the Industrial Revolution, Manchester (provides a brief description of the development of calico printing).
    RLH

    Biographical history of technology > Bell, Thomas

  • 23 Hedley, William

    [br]
    b. 13 July 1779 Newburn, Northumberland, England
    d. 9 January 1843 Lanchester, Co. Durham, England
    [br]
    English coal-mine manager, pioneer in the construction and use of steam locomotives.
    [br]
    The Wylam wagonway passed Newburn, and Hedley, who went to school at Wylam, must have been familiar with this wagonway from childhood. It had been built c.1748 to carry coal from Wylam Colliery to the navigable limit of the Tyne at Lemington. In 1805 Hedley was appointed viewer, or manager, of Wylam Colliery by Christopher Blackett, who had inherited the colliery and wagonway in 1800. Unlike most Tyneside wagonways, the gradient of the Wylam line was insufficient for loaded wagons to run down by gravity and they had to be hauled by horses. Blackett had a locomotive, of the type designed by Richard Trevithick, built at Gateshead as early as 1804 but did not take delivery, probably because his wooden track was not strong enough. In 1808 Blackett and Hedley relaid the wagonway with plate rails of the type promoted by Benjamin Outram, and in 1812, following successful introduction of locomotives at Middleton by John Blenkinsop, Blackett asked Hedley to investigate the feasibility of locomotives at Wylam. The expense of re-laying with rack rails was unwelcome, and Hedley experimented to find out the relationship between the weight of a locomotive and the load it could move relying on its adhesion weight alone. He used first a model test carriage, which survives at the Science Museum, London, and then used a full-sized test carriage laden with weights in varying quantities and propelled by men turning handles. Having apparently satisfied himself on this point, he had a locomotive incorporating the frames and wheels of the test carriage built. The work was done at Wylam by Thomas Waters, who was familiar with the 1804 locomotive, Timothy Hackworth, foreman smith, and Jonathan Forster, enginewright. This locomotive, with cast-iron boiler and single cylinder, was unsatisfactory: Hackworth and Forster then built another locomotive to Hedley's design, with a wrought-iron return-tube boiler, two vertical external cylinders and drive via overhead beams through pinions to the two axles. This locomotive probably came into use in the spring of 1814: it performed well and further examples of the type were built. Their axle loading, however, was too great for the track and from about 1815 each locomotive was mounted on two four-wheeled bogies, the bogie having recently been invented by William Chapman. Hedley eventually left Wylam in 1827 to devote himself to other colliery interests. He supported the construction of the Clarence Railway, opened in 1833, and sent his coal over it in trains hauled by his own locomotives. Two of his Wylam locomotives survive— Puffing Billy at the Science Museum, London, and Wylam Dilly at the Royal Museum of Scotland, Edinburgh—though how much of these is original and how much dates from the period 1827–32, when the Wylam line was re-laid with edge rails and the locomotives reverted to four wheels (with flanges), is a matter of mild controversy.
    [br]
    Further Reading
    P.R.B.Brooks, 1980, William Hedley Locomotive Pioneer, Newcastle upon Tyne: Tyne \& Wear Industrial Monuments Trust (a good recent short biography of Hedley, with bibliography).
    R.Young, 1975, Timothy Hackworth and the Locomotive, Shildon: Shildon "Stockton \& Darlington Railway" Silver Jubilee Committee; orig. pub. 1923, London.
    C.R.Warn, 1976, Waggonways and Early Railways of Northumberland, Newcastle upon Tyne: Frank Graham.
    PJGR

    Biographical history of technology > Hedley, William

  • 24 Ramsbottom, John

    [br]
    b. 11 September 1814 Todmorden, Lancashire, England
    d. 20 May 1897 Alderley Edge, Cheshire, England
    [br]
    English railway engineer, inventor of the reversing rolling mill.
    [br]
    Ramsbottom's initial experience was gained at the locomotive manufacturers Sharp, Roberts \& Co. At the age of 28 he was Manager of the Longsight works of the Manchester \& Birmingham Railway, which, with other lines, became part of the London \& North Western Railway (L \& NWR) in 1846. Ramsbottom was appointed Locomotive Superintendent of its north-eastern division. Soon after 1850 came his first major invention, that of the split-ring piston, consisting of castiron rings fitted round the piston to ensure a steam-tight fit in the cylinder. This proved to be successful, with a worldwide application. In 1856 he introduced sight-feed lubrication and the form of safety valve that bears his name. In 1857 he became Locomotive Superintendent of the L \& NWR at Crewe, producing two notable classes of locomotives: 2–4–0s for passenger traffic; and 0–6–0s for goods. They were of straightforward design and robust construction, and ran successfully for many years. His most spectacular railway invention was the water trough between the rails which enabled locomotives to replenish their water tanks without stopping.
    As part of his policy of making Crewe works as independent as possible, Ramsbottom made several metallurgical innovations. He installed one of the earliest Bessemer converters for steelmaking. More important, in 1866 he coupled the engine part of a railway engine to a two-high rolling mill so that the rolls could be run in either direction, and quickly change direction, by means of the standard railway link reversing gear. This greatly speeded up the rolling of iron or steel into the required sections. He eventually retired in 1871.
    [br]
    Further Reading
    J.N.Weatwood, 1977, Locomotive Designers in the Age of Steam, London: Sidgwick \& Jackson, pp. 43–7.
    W.K.V.Gale, 1969, Iron and Steel, London: Longmans, p. 80 (provides brief details of his reversing mill).
    F.C.Hammerton, 1937, John Ramsbottom, the Father of the Modern Locomotive,
    London.
    LRD

    Biographical history of technology > Ramsbottom, John

  • 25 Stanhope, Charles, 3rd Earl

    [br]
    b. 3 August 1753 London, England
    d. 15 December 1816 Chevening, Kent, England
    [br]
    English politician, scientist and inventor.
    [br]
    Stanhope's schooling at Eton was interrupted in 1764 when the family moved to Geneva; there, he soon showed a talent for scientific pursuits. In 1771 he contributed a paper on the pendulum to the Swedish Academy, which awarded him a prize for it. After his return to London in 1774, he threw himself into politics, earning himself not only a reputation for promoting the liberty of the individual, but also unpopularity for championing the French Revolution.
    Stanhope is best known for his inventions in printing. In 1800 he introduced the first successful iron press, known by his name. Its iron frame enabled a whole forme to be printed at one pull, thus speeding up production. The press retained the traditional screw but incorporated a system of levers which increased the pressure on the platen up to the moment of contact with the type, so that fine, sharp impressions were obtained and the work of the pressman was made easier. Stanhope's process for moulding and reproducing formes, known as stereotyping, became important when curved formes were required for cylinder presses. His invention of logotypes for casting type, however, proved a failure. Throughout his political activities, Stanhope devoted time and money to scientific and mechanical matters. Of these, the development of steamships is noteworthy. He took out patents in 1790 and 1807, and in 1796 he constructed the Kent for the Admiralty, but it was unsuccessful. In 1810, however, he claimed that a vessel 110 ft (33.5 m) long and 7 ft (2.1 m) in draught "outsailed the swiftest vessels in the Navy".
    [br]
    Further Reading
    G.Stanhope, 1914, The Life of Charles, Third Earl Stanhope, London.
    H.Hart, 1966, Charles Earl Stanhope and the Oxford University Press, London: Printing Historical Society (a reprint of a paper, originally published in 1896, describing Stanhope's printing inventions; with copious quotations from Stanhope's own writings, together with an essay on the Stanhope press by James Moran).
    LRD

    Biographical history of technology > Stanhope, Charles, 3rd Earl

  • 26 Stuart, Herbert Akroyd

    [br]
    b. 1864 Halifax, England
    d. 1927 Perth, Australia
    [br]
    English inventor of an oil internal-combustion engine.
    [br]
    Stuart's involvement with engines covered a period of less than ten years and was concerned with a means of vaporizing the heavier oils for use in the so-called oil engines. Leaving his native Yorkshire for Bletchley in Buckinghamshire, Stuart worked in his father's business, the Bletchley Iron and Tin Plate works. After finishing grammar school, he worked as an assistant in the Mechanical Engineering Department of the City and Guilds of London Technical College. He also formed a connection with the Finsbury Technical College, where he became acquainted with Professor William Robinson, a distinguished engineer eminent in the field of internal-combustion engines.
    Resuming work at Bletchley, Stuart carried out experiments with engines. His first patent was concerned with new methods of vaporizing the fuel, scavenging systems and improvement of speed control. Two further patents, in 1890, specified substantial improvements and formed the basis of later engine designs. In 1891 Stuart joined forces with R.Hornsby and Sons of Grantham, a firm founded in 1815 for the manufacture of machinery and steam engines. Hornsby acquired all rights to Stuart's engine patents, and their superior technical resources ensured substantial improvements to Stuart's early design. The Hornsby-Ackroyd engines, introduced in 1892, were highly successful and found wide acceptance, particularly in agriculture. With failing health, Stuart's interest in his engine work declined, and in 1899 he emigrated to Australia, where in 1903 he became a partner in importing gas engines and gas-producing plants. Following his death in 1927, under the terms of his will he was interred in England; sadly, he also requested that all papers and materials pertaining to his engines be destroyed.
    [br]
    Bibliography
    July 1886, British patent no. 9,866 (fuel vapourization methods, scavenging systems and improvement of speed control; the patent describes Stuart as Mechanical Engineer of Bletchley Iron Works).
    1890, British patent no. 7,146 and British patent no. 15,994 (describe a vaporizing chamber connected to the working cylinder by a small throat).
    Further Reading
    D.Clerk, 1895, The Gas and Oil Engine, 6th edn, London, pp. 420–6 (provides a detailed description of the Hornsby-Ackroyd engine and includes details of an engine test).
    T.Hornbuckle and A.K.Bruce, 1940, Herbert Akroyd Stuart and the Development of the Heavy Oil Engine, London: Diesel Engine Users'Association, p. 1.
    KAB

    Biographical history of technology > Stuart, Herbert Akroyd

  • 27 холодильник

    2) Aviation: cool place
    3) Naval: chill box
    6) Military: cold storage depot
    7) Engineering: chill (в литейной форме), chiller, cold store (склад), cold-air unit, cold-storage establishment (склад), cold-storage warehouse (склад), cool store (склад), coolhouse (склад), cooling bank (прокатного стана), cooling bed, cooling house, cooling table, iron chill, refrigerated store (склад), refrigerated warehouse (склад), stave (горна доменной печи), water cooler, wind box (мартеновской печи)
    8) Chemistry: condenser
    11) Economy: cold room
    12) Automobile industry: attemperator, fridge
    13) Architecture: meat-safe
    16) Physics: cooler body
    17) Jargon: coolerator (slang word for fridge, formed by cooler and refrigerator put together. E.g. "The coolerator was crammed with TV dinners and ginger ale"), chilly bin (то же, что и cooler), box
    18) Oil: air cooler
    19) Food industry: cold storage unit
    20) Silicates: refrigerating unit
    23) Polymers: cooling compartment
    25) Plastics: cooling device
    26) Oceanography: cold box
    30) Yachting: fridge compartment
    31) Cement: condensator

    Универсальный русско-английский словарь > холодильник

  • 28 цилиндровый чугун

    Automobile industry: cylinder iron

    Универсальный русско-английский словарь > цилиндровый чугун

  • 29 чугун для отливки цилиндров

    Automobile industry: cylinder iron

    Универсальный русско-английский словарь > чугун для отливки цилиндров

  • 30 prensa1

    1 = printing press, printing machine, press [presses, -pl.].
    Ex. The place of printing is the location where the printing press is situated, of failing this, the organization acting for it.
    Ex. The author list reprographic equipment suitable for use in libraries (copiers, cutting equipment, printing machines, collators, driers).
    Ex. Also annual output could be increased by 13-28% without adding more lathes, driers or presses.
    ----
    * ejemplar de prensa = advance copy, early sheet, advance sheets.
    * en prensa = forthcoming, about to be published, in preparation.
    * entrar en prensa = go to + press.
    * período de la prensa manual, el = hand-press period, the.
    * período de la prensa mecánica, el = machine-press period, the.
    * prensa-ajos = garlic press, garlic crusher.
    * prensa de ajos = garlic press, garlic crusher.
    * prensa de encuadernar = binding press.
    * prensa de madera = wooden press.
    * prensa de metal = iron press.
    * prensa de moldear = punch press.
    * prensa de tornillo = screw press.
    * prensa de torno = standing press.
    * prensa doradora = blocking press.
    * prensa hidráulica = hydraulic press.
    * prensa litográfica = lithographic hand-press.
    * prensa manual = hand-press.
    * prensa mecánica = machine press.
    * prensa normal, la = broadsheet press, the.
    * prensa offset = offset printer, offset printing press, offset.
    * prensa para ajos = garlic press, garlic crusher.
    * prensa para grabados en cobre = copperplate press.
    * prensa rotativa = rotary machine, rotary press, stop-cylinder machine.
    * prensa rotativa wharfedale = Wharfedale.
    * prensa tipográfica de rodillos = rolling press.
    * prensa volante = blocking press, arming press.
    * prueba de prensa = press proof.
    * publicación en prensa = forthcoming title.

    Spanish-English dictionary > prensa1

  • 31 prensa

    f.
    1 press.
    compro la prensa todos los días I buy the newspapers every day
    tener buena/mala prensa (figurative) to have a good/bad press
    la prensa amarilla the gutter press, the tabloids
    prensa del corazón gossip magazines
    2 printing press (imprenta).
    entrar en prensa to go to press
    3 press.
    4 vise, vice.
    5 journalism, press.
    6 fourth estate.
    pres.indicat.
    3rd person singular (él/ella/ello) present indicative of spanish verb: prensar.
    imperat.
    2nd person singular (tú) Imperative of Spanish verb: prensar.
    * * *
    1 (máquina) press; (de imprimir) printing press
    ■ ¿lees la prensa todos los días? do you read the paper every day?
    \
    estar en prensa (libro) to be in the press
    tener buena/mala prensa to have a good/bad press
    libertad de prensa freedom of the press
    * * *
    noun f.
    * * *
    SF
    1) (=publicaciones)

    la prensa — the press, the (news)papers

    tener mala prensa — to have o get a bad press

    prensa roja — Cono Sur sensationalist press specializing in crime stories

    2) (=máquina) (Mec, Dep) press; (Tip) printing press; [de raqueta] press
    PRENSA DEL CORAZÓN The prensa del corazón is the generic term given in Spain to weekly or fortnightly magazines specializing in society gossip and the social lives of the rich and famous. The pioneer was ¡Hola!, which first appeared in 1944 - Hello! magazine is the English-language version - while other popular titles include Pronto, Lecturas, Semana and Diez Minutos. In recent years TV stations have followed their lead with seemingly more and more celebrity and gossip programmes (programas del corazón) appearing all the time.
    * * *
    1)
    a) (Period) press

    leer/comprar la prensa — to read/buy the papers

    buena/mala prensa — good/bad press

    b) ( imprenta) (printing) press

    estar en prensa — to be in o at the press

    asociaciones de la prensa — journalists' o press associations

    2) (Tec) press
    •
    * * *
    1)
    a) (Period) press

    leer/comprar la prensa — to read/buy the papers

    buena/mala prensa — good/bad press

    b) ( imprenta) (printing) press

    estar en prensa — to be in o at the press

    asociaciones de la prensa — journalists' o press associations

    2) (Tec) press
    •
    * * *
    prensa1
    1 = printing press, printing machine, press [presses, -pl.].

    Ex: The place of printing is the location where the printing press is situated, of failing this, the organization acting for it.

    Ex: The author list reprographic equipment suitable for use in libraries (copiers, cutting equipment, printing machines, collators, driers).
    Ex: Also annual output could be increased by 13-28% without adding more lathes, driers or presses.
    * ejemplar de prensa = advance copy, early sheet, advance sheets.
    * en prensa = forthcoming, about to be published, in preparation.
    * entrar en prensa = go to + press.
    * período de la prensa manual, el = hand-press period, the.
    * período de la prensa mecánica, el = machine-press period, the.
    * prensa-ajos = garlic press, garlic crusher.
    * prensa de ajos = garlic press, garlic crusher.
    * prensa de encuadernar = binding press.
    * prensa de madera = wooden press.
    * prensa de metal = iron press.
    * prensa de moldear = punch press.
    * prensa de tornillo = screw press.
    * prensa de torno = standing press.
    * prensa doradora = blocking press.
    * prensa hidráulica = hydraulic press.
    * prensa litográfica = lithographic hand-press.
    * prensa manual = hand-press.
    * prensa mecánica = machine press.
    * prensa normal, la = broadsheet press, the.
    * prensa offset = offset printer, offset printing press, offset.
    * prensa para ajos = garlic press, garlic crusher.
    * prensa para grabados en cobre = copperplate press.
    * prensa rotativa = rotary machine, rotary press, stop-cylinder machine.
    * prensa rotativa wharfedale = Wharfedale.
    * prensa tipográfica de rodillos = rolling press.
    * prensa volante = blocking press, arming press.
    * prueba de prensa = press proof.
    * publicación en prensa = forthcoming title.

    * * *
    A
    1 ( Period) press
    leer/comprar la prensa to read/buy the newspapers
    la prensa oral radio and television
    prensa deportiva sports press
    buena/mala prensa good/bad press
    la película ha tenido muy mala prensa the film has had very bad press
    los ecologistas tienen muy mala prensa por aquí ecologists get a very bad press around here
    2 (imprenta) press, printing press
    estar en prensa to be in o at the press
    lo dimos a la prensa we sent it to the printers
    3
    (periodistas): la prensa the press
    asociaciones de la prensa journalists' o press associations
    Compuestos:
    gutter press, yellow press
    gossip magazines (pl) prensa del corazón (↑ prensa a1)
    (CS) sensationalist press ( specializing in crime stories)
    rotary press
    B ( Tec) press
    Compuestos:
    hydraulic press
    trouser press
    * * *

     

    Del verbo prensar: ( conjugate prensar)

    prensa es:

    3ª persona singular (él/ella/usted) presente indicativo

    2ª persona singular (tú) imperativo

    Multiple Entries:
    prensa    
    prensar
    prensa sustantivo femenino
    a) (Impr, Period, Tec) press;


    estar en prensa to be in o at the press


    prensa amarilla gutter press, yellow press;
    prensa del corazón gossip magazines (pl);
    prensa roja (CS) sensationalist press ( specializing in crime stories)
    prensa sustantivo femenino
    1 Mec press
    (imprenta) printing press
    prensa hidráulica, hidraulic press
    2 (periódicos) newspapers pl; leer la prensa, to read the papers
    agencia de prensa, press agency
    3 (periodistas) la prensa, the press
    rueda/conferencia de prensa, press conference
    4 (periodismo) press
    prensa amarilla, gutter o yellow press
    reportaje de prensa, press report
    ♦ Locuciones: tener buena/mala prensa, to have a good/bad press
    prensar verbo transitivo to press
    ' prensa' also found in these entries:
    Spanish:
    agencia
    - amarilla
    - amarillo
    - articulista
    - billón
    - brear
    - cabecera
    - cartelera
    - colaboración
    - colaborador
    - colaboradora
    - columna
    - columnista
    - comunicada
    - comunicado
    - conferencia
    - consultorio
    - corresponsal
    - crítica
    - crónica
    - cronista
    - denunciar
    - diaria
    - diario
    - dominical
    - editorial
    - enviado
    - estanca
    - estanco
    - exclusiva
    - fondo
    - gabinete
    - libertad
    - pantalla
    - propagar
    - recorte
    - redacción
    - reportaje
    - reseña
    - reseñar
    - resonancia
    - rueda
    - semanario
    - sensacionalista
    - suceso
    - titular1
    - alternativo
    - amarillista
    - declaración
    - informar
    English:
    advertise
    - announcement
    - article
    - back
    - clipping
    - comic
    - contribute
    - contribution
    - copy
    - cutting
    - edit
    - editor
    - feature
    - find out
    - gutter press
    - headline
    - intend
    - lead story
    - leader
    - learn
    - marriage
    - news conference
    - piece
    - press
    - press agent
    - press conference
    - press cutting
    - press release
    - rag
    - readership
    - release
    - report
    - review
    - run
    - scoop
    - special
    - spread
    - story
    - syndicate
    - tabloid press
    - briefing
    - gutter
    - news
    - printing
    - spin
    - tabloid
    * * *
    prensa nf
    1. [periódicos, periodistas] press;
    compro la prensa todos los días I buy the newspapers every day;
    tener buena/mala prensa to have a good/bad press
    la prensa amarilla the gutter press, the tabloids;
    la prensa del corazón gossip magazines;
    la prensa deportiva the sports press;
    la prensa diaria the daily press;
    la prensa escrita the press;
    la prensa especializada specialist publications
    2.
    la prensa [los periodistas] the press
    3. [imprenta] printing press;
    entrar en prensa to go to press
    4. [máquina] press
    prensa hidráulica hydraulic press
    PRENSA ROSA
    In recent decades, magazines devoted to the lives of celebrities have become increasingly popular in the Spanish-speaking world. Some magazines have even sought to export their recipe for success abroad. The avid interest of the media in prying into the lives of the famous has transferred to television, and there are a myriad of cheaply produced programs which do little more than hound celebrities attending social functions or just getting on with their daily lives. However, many celebrities have decided to cash in on this public interest and demand huge sums of money to appear in exclusive reports or interviews.
    * * *
    f press;
    prensa diaria daily newspapers pl, dailies pl ;
    prensa especializada specialist press;
    tener buena/mala prensa tb fig have a good/bad press
    * * *
    prensa nf
    1) : printing press
    2) : press
    conferencia de prensa: press conference
    * * *
    1. (en general) press
    2. (periódicos) papers

    Spanish-English dictionary > prensa

  • 32 отсутствовать

    Отсутствовать - to be absent, to be lacking; to be not available (в распоряжении кого-либо); to be out of stock (на складе); not to exist, to be nonexistent (не существовать вообще)
     Unfortunately, the elastic foundation has an irregular boundary and is absent in some zones.
     The occurrence of such fluctuations is indicated by a large number of statistical studies, but iron-clad proof is still lacking.
     Measures for improving the fatigue strength of steels are not currently available.
     These constraints do not exist when the cylinder is situated in a purely liquid environment.
     Since the masses were centrally located, higher order, shaft critical speeds were nonexistent.
     Spherical data are, virtually nonexistent because of the difficulty of providing enough energy to the sphere to cause film boiling.

    Русско-английский научно-технический словарь переводчика > отсутствовать

  • 33 Carbonising Wool Rags

    The " wet " or dilute sulphuric acid process is now almost entirely superseded for rags by the " dry " or hydrochloric acid gas treatment, because the colours of the rags do not " bleed " so much as with the wet process. The gas is generated in a retort placed beside the extracting chamber. In the retort is placed a mixture of common salt and sulphuric acid, or the gas is produced by merely heating liquid hydrochloric acid (spirits of salt). The extracting chamber consists of a revolving cylindrical cage, contained in a cased iron vessel heated by steam In this the rags are subjected to the acid fumes. The rags are slightly moistened by steam to facilitate the action of the acid on the cotton. The inside of the cylinder is covered with hooks, and, as it turns slowly, the rags are carried up and drop from the hooks, ensuring a thorough contact with the gas. The operation is complete in three hours. After the carbonising, the shoddy is put through a burr crushing machine, where the charred vegetable matter is removed. Then the goods are washed well or neutralised, and are then ready for the next process of manufacture.

    Dictionary of the English textile terms > Carbonising Wool Rags

  • 34 Bury, Edward

    [br]
    b. 22 October 1794 Salford, Lancashire, England
    d. 25 November 1858 Scarborough, Yorkshire, England
    [br]
    English steam locomotive designer and builder.
    [br]
    Bury was the earliest engineer to build locomotives distinctively different from those developed by Robert Stephenson yet successful in mainline passenger service. A Liverpool sawmill owner, he set up as a locomotive manufacturer while the Liverpool \& Manchester Railway was under construction and, after experiments, completed the four-wheeled locomotive Liverpool in 1831. It included features that were to be typical of his designs: a firebox in the form of a vertical cylinder with a dome-shaped top and the front flattened to receive the tubes, and inside frames built up from wrought-iron bars. In 1838 Bury was appointed to supply and maintain the locomotives for the London \& Birmingham Railway (L \& BR), then under construction by Robert Stephenson, on the grounds that the latter should not also provide its locomotives. For several years the L \& BR used Bury locomotives exclusively, and they were also used on several other early main lines. Following export to the USA, their bar frames became an enduring feature of locomotive design in that country. Bury claimed, with justification, that his locomotives were economical in maintenance and fuel: the shape of the firebox promoted rapid circulation of water. His locomotives were well built, but some of their features precluded enlargement of the design to produce more powerful locomotives and within a few years they were outclassed.
    [br]
    Principal Honours and Distinctions
    FRS 1844.
    Bibliography
    1840, "On the locomotive engines of the London and Birmingham Railway", Transactions of the Institution of Civil Engineers 3 (4) (provides details of his locomotives and the thinking behind them).
    Further Reading
    C.F.Dendy Marshall, 1953, A History of'Railway Locomotives Down to the End of the Year 1831, London: The Locomotive Publishing Co. (describes Bury's early work).
    P.J.G.Ransom, 1990, The Victorian Railway and How It Evolved, London: Heinemann, pp. 167–8 and 174–6.
    PJGR

    Biographical history of technology > Bury, Edward

  • 35 Forrester, George

    [br]
    b. 1780/1 Scotland
    d. after 1841
    [br]
    Scottish locomotive builder and technical innovator.
    [br]
    George Forrester \& Co. built locomotives at the Vauxhall Foundry, Liverpool, between 1834 and c.1847. The first locomotives built by them, in 1834, were three for the Dublin \& Kingstown Railway and one for the Liverpool \& Manchester Railway; they were the first locomotives to have outside horizontal cylinders and the first to have four fixed eccentrics to operate the valves, in place of two loose eccentrics. Two locomotives built by Forrester in 1835 for the Dublin \& Kingstown Railway were the first tank locomotives to run regularly on a public railway, and two more supplied in 1836 to the London \& Greenwich Railway were the first such locomotives in England. Little appears to be known about Forrester himself. In the 1841 census his profession is shown as "civil engineer, residence 1 Lord Nelson Street". Directories for Liverpool, contemporary with Forrester \& Co.'s locomotive building period, describe the firm variously as engineers, iron founders and boilermakers, located at (successively) 234,224 and 40 Vauxhall Road. Works Manager until 1840 was Alexander Allan, who subsequently used the experience he had gained with Forrester in the design of his "Crewe Type" outside-cylinder locomotive, which became widely used.
    [br]
    Further Reading
    E.L.Ahrons, 1927, The British Steam Railway Locomotive 1825–1925, The Locomotive Publishing Co., pp. 29, 43, 50 and 83.
    J.Lowe, 1975, British Steam Locomotive Builders, Cambridge: Goose \& Son.
    R.H.G.Thomas, 1986, London's First Railway: The London \& Greenwich, B.T.Batsford, p. 176.
    PJGR

    Biographical history of technology > Forrester, George

  • 36 Kirk, Alexander Carnegie

    [br]
    b. c.1830 Barry, Angus, Scotland
    d. 5 October 1892 Glasgow, Scotland
    [br]
    Scottish marine engineer, advocate of multiple-expansion in steam reciprocating engines.
    [br]
    Kirk was a son of the manse, and after attending school at Arbroath he proceeded to Edinburgh University. Following graduation he served an apprenticeship at the Vulcan Foundry, Glasgow, before serving first as Chief Draughtsman with the Thames shipbuilders and engineers Maudslay Sons \& Field, and later as Engineer of Paraffin Young's Works at Bathgate and West Calder in Lothian. He was credited with the inventions of many ingenious appliances and techniques for improving production in these two establishments. About 1866 Kirk returned to Glasgow as Manager of the Cranstonhill Engine Works, then moved to Elder's Shipyard (later known as the Fairfield Company) as Engineering Manager. There he made history in producing the world's first triple-expansion engines for the single-screw steamship Propontis in 1874. That decade was to confirm the Clyde's leading role as shipbuilders to the world and to establish the iron ship with efficient reciprocating machinery as the workhorse of the British Merchant Marine. Upon the death of the great Clyde shipbuilder Robert Napier in 1876, Kirk and others took over as partners in the shipbuilding yard and engine shops of Robert Napier \& Sons. There in 1881 they built a ship that is acknowledged as one of the masterpieces of British shipbuilding: the SS Aberdeen for George Thompson's Aberdeen Line to the Far East. In this ship the fullest advantage was taken of high steam temperatures and pressures, which were expanded progressively in a three-cylinder configuration. The Aberdeen, in its many voyages from London to China and Japan, was to prove the efficiency of these engines that had been so carefully designed in Glasgow. In the following years Dr Kirk (he has always been known as Doctor, although his honorary LLD was only awarded by Glasgow University in 1888) persuaded the Admiralty and several shipping companies to accept not only triple-expansion machinery but also the use of mild steel in ship construction. The successful SS Parisian, built for the Allan Line of Glasgow, was one of these pioneer ships.
    [br]
    Principal Honours and Distinctions
    Fellow of the Royal Society of Edinburgh.
    FMW

    Biographical history of technology > Kirk, Alexander Carnegie

  • 37 Perkins, Jacob

    [br]
    b. 9 July 1766 Newburyport, Massachusetts, USA
    d. 30 July 1849 London, England
    [br]
    American inventor of a nail-making machine and a method of printing banknotes, investigator of the use of steam at very high pressures.
    [br]
    Perkins's occupation was that of a gold-and silversmith; while he does not seem to have followed this after 1800, however, it gave him the skills in working metals which he would continue to employ in his inventions. He had been working in America for four years before he patented his nail-making machine in 1796. At the time there was a great shortage of nails because only hand-forged ones were available. By 1800, other people had followed his example and produced automatic nail-making machines, but in 1811 Perkins' improved machines were introduced to England by J.C. Dyer. Eventually Perkins had twenty-one American patents for a range of inventions in his name.
    In 1799 Perkins invented a system of engraving steel plates for printing banknotes, which became the foundation of modern siderographic work. It discouraged forging and was adopted by many banking houses, including the Federal Government when the Second United States Bank was inaugurated in 1816. This led Perkins to move to Philadelphia. In the intervening years, Perkins had improved his nail-making machine, invented a machine for graining morocco leather in 1809, a fire-engine in 1812, a letter-lock for bank vaults and improved methods of rolling out spoons in 1813, and improved armament and equipment for naval ships from 1812 to 1815.
    It was in Philadelphia that Perkins became interested in the steam engine, when he met Oliver Evans, who had pioneered the use of high-pressure steam. He became a member of the American Philosophical Society and conducted experiments on the compressibility of water before a committee of that society. Perkins claimed to have liquified air during his experiments in 1822 and, if so, was the real discoverer of the liquification of gases. In 1819 he came to England to demonstrate his forgery-proof system of printing banknotes, but the Bank of England was the only one which did not adopt his system.
    While in London, Perkins began to experiment with the highest steam pressures used up to that time and in 1822 took out his first of nineteen British patents. This was followed by another in 1823 for a 10 hp (7.5 kW) engine with only 2 in. (51 mm) bore, 12 in. (305 mm) stroke but a pressure of 500 psi (35 kg/cm2), for which he claimed exceptional economy. After 1826, Perkins abandoned his drum boiler for iron tubes and steam pressures of 1,500 psi (105 kg/cm2), but the materials would not withstand such pressures or temperatures for long. It was in that same year that he patented a form of uniflow cylinder that was later taken up by L.J. Todd. One of his engines ran for five days, continuously pumping water at St Katherine's docks, but Perkins could not raise more finance to continue his experiments.
    In 1823 one his high-pressure hot-water systems was installed to heat the Duke of Wellington's house at Stratfield Saye and it acquired a considerable vogue, being used by Sir John Soane, among others. In 1834 Perkins patented a compression ice-making apparatus, but it did not succeed commercially because ice was imported more cheaply from Norway as ballast for sailing ships. Perkins was often dubbed "the American inventor" because his inquisitive personality allied to his inventive ingenuity enabled him to solve so many mechanical challenges.
    [br]
    Further Reading
    Historical Society of Pennsylvania, 1943, biography which appeared previously as a shortened version in the Transactions of the Newcomen Society 24.
    D.Bathe and G.Bathe, 1943–5, "The contribution of Jacob Perkins to science and engineering", Transactions of the Newcomen Society 24.
    D.S.L.Cardwell, 1971, From Watt to Clausius. The Rise of Thermodynamics in the Early Industrial Age, London: Heinemann (includes comments on the importance of Perkins's steam engine).
    A.F.Dufton, 1940–1, "Early application of engineering to warming of buildings", Transactions of the Newcomen Society 21 (includes a note on Perkins's application of a high-pressure hot-water heating system).
    RLH

    Biographical history of technology > Perkins, Jacob

  • 38 Rosenhain, Walter

    SUBJECT AREA: Metallurgy
    [br]
    b. 24 August 1875 Berlin, Germany
    d. 17 March 1934 Kingston Hill, Surrey, England
    [br]
    German metallurgist, first Superintendent of the Department of Metallurgy and Metallurgical Chemistry at the National Physical Laboratory, Teddington, Middlesex.
    [br]
    His family emigrated to Australia when he was 5 years old. He was educated at Wesley College, Melbourne, and attended Queen's College, University of Melbourne, graduating in physics and engineering in 1897. As an 1851 Exhibitioner he then spent three years at St John's College, Cambridge, under Sir Alfred Ewing, where he studied the microstructure of deformed metal crystals and abandoned his original intention of becoming a civil engineer. Rosenhain was the first to observe the slip-bands in metal crystals, and in the Bakerian Lecture delivered jointly by Ewing and Rosenhain to the Royal Society in 1899 it was shown that metals deformed plastically by a mechanism involving shear slip along individual crystal planes. From this conception modern ideas on the plasticity and recrystallization of metals rapidly developed. On leaving Cambridge, Rosenhain joined the Birmingham firm of Chance Brothers, where he worked for six years on optical glass and lighthouse-lens systems. A book, Glass Manufacture, written in 1908, derives from this period, during which he continued his metallurgical researches in the evenings in his home laboratory and published several papers on his work.
    In 1906 Rosenhain was appointed Head of the Metallurgical Department of the National Physical Laboratory (NPL), and in 1908 he became the first Superintendent of the new Department of Metallurgy and Metallurgical Chemistry. Many of the techniques he introduced at Teddington were described in his Introduction to Physical Metallurgy, published in 1914. At the outbreak of the First World War, Rosenhain was asked to undertake work in his department on the manufacture of optical glass. This soon made it possible to manufacture optical glass of high quality on an industrial scale in Britain. Much valuable work on refractory materials stemmed from this venture. Rosenhain's early years at the NPL were, however, inseparably linked with his work on light alloys, which between 1912 and the end of the war involved virtually all of the metallurgical staff of the laboratory. The most important end product was the well-known "Y" Alloy (4% copper, 2% nickel and 1.5% magnesium) extensively used for the pistons and cylinder heads of aircraft engines. It was the prototype of the RR series of alloys jointly developed by Rolls Royce and High Duty Alloys. An improved zinc-based die-casting alloy devised by Rosenhain was also used during the war on a large scale for the production of shell fuses.
    After the First World War, much attention was devoted to beryllium, which because of its strength, lightness, and stiffness would, it was hoped, become the airframe material of the future. It remained, however, too brittle for practical use. Other investigations dealt with impurities in copper, gases in aluminium alloys, dental alloys, and the constitution of alloys. During this period, Rosenhain's laboratory became internationally known as a centre of excellence for the determination of accurate equilibrium diagrams.
    [br]
    Principal Honours and Distinctions
    FRS 1913. President, Institute of Metals 1828–30. Iron and Steel Institute Bessemer Medal, Carnegie Medal.
    Bibliography
    1908, Glass Manufacture.
    1914, An Introduction to the Study of Physical Metallurgy, London: Constable. Rosenhain published over 100 research papers.
    Further Reading
    J.L.Haughton, 1934, "The work of Walter Rosenhain", Journal of the Institute of Metals 55(2):17–32.
    ASD

    Biographical history of technology > Rosenhain, Walter

  • 39 Theophilus Presbyter

    [br]
    fl. late eleventh/early twelfth century
    [br]
    German author of the most detailed medieval treatise relating to technology.
    [br]
    The little that is known of Theophilus is what can be inferred from his great work, De diversis artibus. He was a Benedictine monk and priest living in north-west Germany, probably near an important art centre. He was an educated man, conversant with scholastic philosophy and at the same time a skilled, practising craftsman. Even his identity is obscure: Theophilus is a pseudonym, possibly for Roger of Helmarshausen, for the little that is known of both is in agreement.
    Evidence in De diversis suggests that it was probably composed during 1110 to 1140. White (see Further Reading) goes on to suggest late 1122 or early 1123, on the grounds that Theophilus only learned of St Bernard of Clairvaulx's diatribe against lavish church ornamentation during the writing of the work, for it is only in the preface to Book 3 that Theophilus seeks to justify his craft. St Bernard's Apologia can be dated late 1122. No other medieval work on art combines the comprehensive range, orderly presentation and attention to detail as does De diversis. It has been described as an encyclopedia of medieval skills and crafts. It also offers the best and often the only description of medieval technology, including the first direct reference to papermaking in the West, the earliest medieval account of bell-founding and the most complete account of organ building. Many metallurgical techniques are described in detail, such as the making of a crucible furnace and bloomery hearth.
    The treatise is divided into three books, the first on the materials and art of painting, the second on glassmaking, including stained glass, glass vessels and the blown-cylinder method for flat glass, and the final and longest book on metalwork, including working in iron, copper, gold and silver for church use, such as chalices and censers. The main texts are no mere compilations, but reveal the firsthand knowledge that can only be gained by a skilled craftsman. The prefaces to each book present perhaps the only medieval expression of an artist's ideals and how he sees his art in relation to the general scheme of things. For Theophilus, his art is a gift from God and every skill an act of praise and piety. Theophilus is thus an indispensable source for medieval crafts and technology, but there are indications that the work was also well known at the time of its composition and afterwards.
    [br]
    Bibliography
    The Wolfenbuttel and Vienna manuscripts of De diversis are the earliest, both dating from the first half of the twelfth century, while the British Library copy, in an early thirteenth-century hand, is the most complete. Two incomplete copies from the thirteenth century held at Cambridge and Leipzig offer help in arriving at a definitive edition.
    There are several references to De diversis in sixteenth-century printed works, such as Cornelius Agrippa (1530) and Josias Simmler (1585). The earliest printed edition of
    De diversis was prepared by G.H.Lessing in 1781 with the title, much used since, Diversarium artium schedula.
    There are two good recent editions: Theophilus: De diversis artibus. The Various Arts, 1964, trans. with introd. by C.R.Dodwell, London: Thomas Nelson, and On Diverse Arts. The Treatise of Theophilus, 1963, trans. with introd. and notes by J.G.Harthorne and C.S.Smith, Chicago University Press.
    Further Reading
    Lynn White, 1962, "Theophilus redivivus", Technology and Culture 5:224–33 (a comparative review of Theophilus (op. cit.) and On Diverse Arts (op. cit.)).
    LRD

    Biographical history of technology > Theophilus Presbyter

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