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  • 61 Carlson, Chester Floyd

    [br]
    b. 8 July 1906 Seattle, Washington, USA
    d. 19 September 1968 New York, USA
    [br]
    [br]
    Carlson studied physics at the California Institute of Technology and in 1930 he took a research position at Bell Telephone Laboratories, but soon transferred to their patent department. To equip himself in this field, Carlson studied law, and in 1934 he became a patent attorney at P.R.Mallory \& Co., makers of electrical apparatus. He was struck by the difficulty in obtaining copies of documents and drawings; indeed, while still at school, he had encountered printing problems in trying to produce a newsletter for amateur chemists. He began experimenting with various light-sensitive substances, and by 1937 he had conceived the basic principles of xerography ("dry writing"), using the property of certain substances of losing an electrostatic charge when light impinges on them. His work for Mallory brought him into contact with the Battelle Memorial Institute, the world's largest non-profit research organization; their subsidiary, set up to develop promising ideas, took up Carlson's invention. Carlson received his first US patent for the process in 1940, with two more in 1942, and he assigned to Battelle exclusive patent rights in return for a share of any future proceeds. It was at Battelle that selenium was substituted as the light-sensitive material.
    In 1946 the Haloid Company of Rochester, manufacturers of photographic materials and photocopying equipment, heard of the Xerox copier and, seeing it as a possible addition to their products, took out a licence to develop it commercially. The first Xerox Copier was tested during 1949 and put on the market the following year. The process soon began to displace older methods, such as Photostat, but its full impact on the public came in 1959 with the advent of the Xerox 914 Copier. It is fair to apply the overworked word "revolution" to the change in copying methods initiated by Carlson. He became a multimillionaire from his royalties and stock holding, and in his last years he was able to indulge in philanthropic activities.
    [br]
    Further Reading
    Obituary, 1968, New York Times, 20 September.
    R.M.Schaffert, 1954, "Developments in xerography", Penrose Annual.
    J.Jewkes, 1969, The Sources of Invention, 2nd edn, London: Macmillan, pp. 405–8.
    LRD

    Biographical history of technology > Carlson, Chester Floyd

  • 62 Howe, Elias

    [br]
    b. 9 July 1819 Spencer, Massachusetts, USA
    d. 3 October 1867 Bridgeport, Connecticut, USA
    [br]
    American inventor of one of the earliest successful sewing machines.
    [br]
    Son of Elias Howe, a farmer, he acquired his mechanical knowledge in his father's mill. He left school at 12 years of age and was apprenticed for two years in a machine shop in Lowell, Massachusetts, and later to an instrument maker, Ari Davis in Boston, Massachusetts, where his master's services were much in demand by Harvard University. Fired by a desire to invent a sewing machine, he utilized the experience gained in Lowell to devise a shuttle carrying a lower thread and a needle carrying an upper thread to make lock-stitch in straight lines. His attempts were so rewarding that he left his job and was sustained first by his father and then by a partner. By 1845 he had built a machine that worked at 250 stitches per minute, and the following year he patented an improved machine. The invention of the sewing machine had an enormous impact on the textile industry, stimulating demand for cloth because making up garments became so much quicker. The sewing machine was one of the first mass-produced consumer durables and was essentially an American invention. William Thomas, a London manufacturer of shoes, umbrellas and corsets, secured the British rights and persuaded Howe to come to England to apply it to the making of shoes. This Howe did, but he quarrelled with Thomas after less than one year. He returned to America to face with his partner, G.W.Bliss, a bigger fight over his patent (see I.M. Singer), which was being widely infringed. Not until 1854 was the case settled in his favour. This litigation threatened the very existence of the new industry, but the Great Sewing Machine Combination, the first important patent-pooling arrangement in American history, changed all this. For a fee of $5 on every domestically-sold machine and $1 on every exported one, Howe contributed to the pool his patent of 1846 for a grooved eye-pointed needle used in conjunction with a lock-stitch-forming shuttle. Howe's patent was renewed in 1861; he organized and equipped a regiment during the Civil War with the royalties. When the war ended he founded the Howe Machine Company of Bridgeport, Connecticut.
    [br]
    Further Reading
    Obituary, 1867, Engineer 24.
    Obituary, 1867, Practical Magazine 5.
    F.G.Harrison, 1892–3, Biographical Sketches of Pre-eminent Americans (provides a good account of Howe's life and achievements).
    N.Salmon, 1863, History of the Sewing Machine from the Year 1750, with a biography of Elias Howe, London (tells the history of sewing machines).
    F.B.Jewell, 1975, Veteran Sewing Machines, A Collector's Guide, Newton Abbot (a more modern account of the history of sewing machines).
    C.Singer (ed.), 1958, A History of Technology, Vol. V, Oxford: Clarendon Press (covers the mechanical developments).
    D.A.Hounshell, 1984, From the American System to Mass Production 1800–1932. The
    Development of Manufacturing Technology in the United States, Baltimore (examines the role of the American sewing machine companies in the development of mass-production techniques).
    RLH

    Biographical history of technology > Howe, Elias

  • 63 imponer

    v.
    1 to set (moda).
    2 to be imposing.
    3 to impose, to enforce, to compel, to foist.
    Ella impone el reglamento She imposes the rules.
    4 to stipulate, to set, to determine, to lay down.
    Elsa impone el plan de acción Elsa stipulates the plan of action.
    5 to be imposed upon.
    Se me impuso una regla estúpida A stupid rule was imposed on me.
    * * *
    Conjugation model [ PONER], like link=poner poner (pp impuesto,-a)
    1 (ley, límite, sanción) to impose
    2 (obediencia) to exact
    3 (respeto) to inspire
    4 FINANZAS (cantidad) to deposit
    1 (asustar) to be frightening
    1 to impose one's authority (a, on)
    2 (obligarse) to force oneself to
    3 (prevalecer) to prevail
    4 (predominar) to become fashionable
    * * *
    verb
    •
    * * *
    ( pp impuesto)
    1. VT
    1) (=poner) [+ castigo, obligación] to impose; [+ tarea] to set

    no quiero imponerte nada, solo darte un buen consejo — I don't want to force you to do anything o I don't want to impose anything on you, just to give you some good advice

    2) frm (=conceder) [+ medalla] to award

    a la princesa le impusieron el nombre de Mercedes — the princess was given the name Mercedes, the princess was named Mercedes

    3) (=hacer prevalecer) [+ voluntad, costumbre] to impose; [+ norma] to enforce; [+ miedo] to instil; [+ condición] to lay down, impose; [+ enseñanza, uso] to make compulsory

    • imponer la moda — to set the trend

    algunos creadores japoneses imponen su moda en Occidente — some Japanese designers have successfully brought their fashions over to the West

    • imponer respeto — to command respect

    • imponer el ritmo — to set the pace

    4) (Com, Econ) [+ dinero] to deposit; [+ impuesto] to put (a, sobre on)
    levy (a, sobre on)

    han impuesto nuevas tasas sobre los servicios básicos — they have put o levied new taxes on essential services

    5) (=instruir)
    6) (Rel)
    7) Chile to pay (in contributions), pay (in Social Security)
    2. VI
    1) (=intimidar) [persona] to command respect; [edificio] to be imposing; [arma] to be intimidating

    ¿no te impone dormir solo? — don't you find it rather scary sleeping on your own?

    2) Chile to pay contributions, pay one's Social Security
    3.
    See:
    * * *
    1.
    verbo transitivo
    1)
    a) (frml) <castigo/multa> to impose (frml)
    b) (frml) <gravamen/impuesto> to impose, levy (frml)
    c) < obligación> to impose, place; < opinión> to impose; <reglas/condiciones> to impose, enforce; < tarea> to set
    d) < respeto> to command; < temor> to inspire, instill*
    e) < moda> to set
    2) (frml) (+ me/te/le etc) <condecoración/medalla> to confer; < nombre> to give
    3) ( informar)

    imponer a alguien de or en algo — to inform somebody of o about something

    4) (Esp frml) <dinero/fondos> to deposit
    5) (Chi) ( a la seguridad social) to contribute
    2.
    imponer vi (infundir respeto, admiración) to be imposing
    3.
    imponerse v pron
    1)
    a) (refl) <horario/meta> to set oneself
    b) idea to become established
    c) (frml) cambio/decisión to be imperative (frml)
    d) color/estilo to come into fashion
    2) ( hacerse respetar) to assert oneself o one's authority
    3) (frml) ( vencer) to win

    imponerse a alguien/algo — to defeat o beat somebody/something

    4) (frml) ( informarse)
    5) (Méx) ( acostumbrarse)
    * * *
    = be awe-inspiring, dictate, lay on, impose, enjoin, inflict, enforce, thrust on/upon, mete out.
    Ex. Yet the speed of action, the intricacy of trails, the detail of mental pictures, is awe-inspiring beyond all else in nature.
    Ex. Also, economy dictates that every possible entry cannot be printed.
    Ex. Those are, as I said in another context, monickers that were laid on them by ignorant and, I would say, mean-minded authors for their own purposes.
    Ex. Results suggest that the structure imposed on a small document collection by an automatically produced subject representation is unrelated to the structure imposed on the documents by relevance relationships.
    Ex. Heightened interest in the nation's founding and in the intentions of the founders enjoins law librarians to provide reference service for research in the history of the constitutional period.
    Ex. This article discusses the budget cuts inflicted on Australian libraries.
    Ex. Economic necessity will enforce an improvement in the provision of patent information in Hungary.
    Ex. Different responsibilities will be thrust upon librarians as their work becomes an increasingly vital complement to academic work, in particular assisting academics and students alike in creating order out of the chaos that is the Internet.
    Ex. Governmental intervention has been criticized for the lenience of penalties meted out & the lack of a cohesive strategy.
    ----
    * imponer a = intrude on.
    * imponer autoridad = lay down + the law.
    * imponer castigo = mete out + punishment.
    * imponer condena = impose + prison sentence.
    * imponer exigencias a = place + demands on.
    * imponer impuestos = impose + VAT.
    * imponer multa = impose + penalty.
    * imponer orden = impose + order, bring + order.
    * imponer orden en donde hay caos = bring + order out of chaos.
    * imponer + Posesivo + autoridad = pull + rank.
    * imponer recortes = impose + cuts.
    * imponer respeto = stand in + awe.
    * imponer restricciones a = impose + limits on.
    * imponer sanción económica = levy + fine.
    * imponer sanciones = exercise + sanctions.
    * imponerse = prevail, obtrude (into), take + hold, put + Posesivo + foot down, overrule.
    * imponerse a Uno mismo = self-mandate.
    * imponerse disciplina = discipline + Reflexivo.
    * imponer sentencia = mete out + sentence.
    * imponerse una tarea = task + Reflexivo.
    * imponer una carga = place + burden.
    * imponer una condición = place + limitation.
    * imponer una limitación = place + restraint, impose + limitation.
    * imponer una limitación (sobre) = place + constraint (on/upon).
    * imponer una limitación sobre Algo = impose + constraint upon.
    * imponer una norma = place + prescription.
    * imponer una restricción = place + requirement, place + restraint.
    * imponer una restricción sobre Algo = impose + constraint upon.
    * imponer una sanción = impose + sanction.
    * imponer una tarea = task.
    * imponer una tarea a Alguien = foist + Nombre + on + Alguien + as a duty.
    * * *
    1.
    verbo transitivo
    1)
    a) (frml) <castigo/multa> to impose (frml)
    b) (frml) <gravamen/impuesto> to impose, levy (frml)
    c) < obligación> to impose, place; < opinión> to impose; <reglas/condiciones> to impose, enforce; < tarea> to set
    d) < respeto> to command; < temor> to inspire, instill*
    e) < moda> to set
    2) (frml) (+ me/te/le etc) <condecoración/medalla> to confer; < nombre> to give
    3) ( informar)

    imponer a alguien de or en algo — to inform somebody of o about something

    4) (Esp frml) <dinero/fondos> to deposit
    5) (Chi) ( a la seguridad social) to contribute
    2.
    imponer vi (infundir respeto, admiración) to be imposing
    3.
    imponerse v pron
    1)
    a) (refl) <horario/meta> to set oneself
    b) idea to become established
    c) (frml) cambio/decisión to be imperative (frml)
    d) color/estilo to come into fashion
    2) ( hacerse respetar) to assert oneself o one's authority
    3) (frml) ( vencer) to win

    imponerse a alguien/algo — to defeat o beat somebody/something

    4) (frml) ( informarse)
    5) (Méx) ( acostumbrarse)
    * * *
    = be awe-inspiring, dictate, lay on, impose, enjoin, inflict, enforce, thrust on/upon, mete out.

    Ex: Yet the speed of action, the intricacy of trails, the detail of mental pictures, is awe-inspiring beyond all else in nature.

    Ex: Also, economy dictates that every possible entry cannot be printed.
    Ex: Those are, as I said in another context, monickers that were laid on them by ignorant and, I would say, mean-minded authors for their own purposes.
    Ex: Results suggest that the structure imposed on a small document collection by an automatically produced subject representation is unrelated to the structure imposed on the documents by relevance relationships.
    Ex: Heightened interest in the nation's founding and in the intentions of the founders enjoins law librarians to provide reference service for research in the history of the constitutional period.
    Ex: This article discusses the budget cuts inflicted on Australian libraries.
    Ex: Economic necessity will enforce an improvement in the provision of patent information in Hungary.
    Ex: Different responsibilities will be thrust upon librarians as their work becomes an increasingly vital complement to academic work, in particular assisting academics and students alike in creating order out of the chaos that is the Internet.
    Ex: Governmental intervention has been criticized for the lenience of penalties meted out & the lack of a cohesive strategy.
    * imponer a = intrude on.
    * imponer autoridad = lay down + the law.
    * imponer castigo = mete out + punishment.
    * imponer condena = impose + prison sentence.
    * imponer exigencias a = place + demands on.
    * imponer impuestos = impose + VAT.
    * imponer multa = impose + penalty.
    * imponer orden = impose + order, bring + order.
    * imponer orden en donde hay caos = bring + order out of chaos.
    * imponer + Posesivo + autoridad = pull + rank.
    * imponer recortes = impose + cuts.
    * imponer respeto = stand in + awe.
    * imponer restricciones a = impose + limits on.
    * imponer sanción económica = levy + fine.
    * imponer sanciones = exercise + sanctions.
    * imponerse = prevail, obtrude (into), take + hold, put + Posesivo + foot down, overrule.
    * imponerse a Uno mismo = self-mandate.
    * imponerse disciplina = discipline + Reflexivo.
    * imponer sentencia = mete out + sentence.
    * imponerse una tarea = task + Reflexivo.
    * imponer una carga = place + burden.
    * imponer una condición = place + limitation.
    * imponer una limitación = place + restraint, impose + limitation.
    * imponer una limitación (sobre) = place + constraint (on/upon).
    * imponer una limitación sobre Algo = impose + constraint upon.
    * imponer una norma = place + prescription.
    * imponer una restricción = place + requirement, place + restraint.
    * imponer una restricción sobre Algo = impose + constraint upon.
    * imponer una sanción = impose + sanction.
    * imponer una tarea = task.
    * imponer una tarea a Alguien = foist + Nombre + on + Alguien + as a duty.

    * * *
    vt
    A
    1 ( frml); ‹castigo/pena/multa› to impose ( frml)
    el gobierno impuso el toque de queda the government imposed a curfew
    le impusieron una pena de 20 años de cárcel he was sentenced to 20 years in prison, they imposed a 20-year prison sentence on him
    2 ( frml); ‹gravamen/impuesto› to impose, levy ( frml)
    3 ‹obligación› to impose, place; ‹opinión› to impose; ‹reglas/condiciones› to impose, enforce; ‹tarea› to set
    no lo sienten como una cosa impuesta they don't see it as an imposition o as something imposed upon them
    no te estoy tratando de imponer nada, sólo te estoy advirtiendo de un posible peligro I'm not trying to tell you what to do, I'm just warning you of a possible danger
    siempre tiene que imponer su punto de vista he always has to impose his point of view
    4 ‹respeto› to command; ‹temor› to inspire, instill*
    5 ‹moda› to set
    B ( frml) (+ me/te/le etc) ‹condecoración› to confer; ‹nombre› to give; ‹medalla› to confer
    le impuso la máxima condecoración civil he conferred the highest civil award on o upon him
    se le impuso el nombre de `calle de los Mártires' it was given the name of `street of the Martyrs'
    C (informar) imponer a algn DE or EN algo to inform sb OF o ABOUT sth
    D ( Relig):
    imponerle las manos a algn to lay one's hands upon o on sb
    E ( Esp frml) ‹dinero/fondos› to deposit
    F ( Chi) (a la seguridad social) to contribute
    ■ imponer
    vi
    (infundir respeto, admiración) to be imposing
    su mera presencia impone he has an imposing presence, his mere presence is imposing
    su dominio de la situación impone his command of the situation is impressive
    A
    1 ( refl) ‹horario› to set oneself; ‹régimen› to impose … on oneself
    2 «idea» to become established
    3 ( frml); «cambio/decisión» to be imperative ( frml)
    se impone tomar una decisión hoy mismo it is imperative that a decision is o be made today
    se impone la necesidad de un cambio a change is imperative, there is an urgent need for a change
    4 ‹color/estilo› to come into fashion, become fashionable
    este invierno se han impuesto las faldas por debajo de la rodilla skirts below the knee have become fashionable o have come into fashion this winter
    B (hacerse respetar) to assert oneself o one's authority
    C ( frml) (vencer) to win
    se impuso por puntos he won on points
    se impondrá el sentido común common sense will prevail
    imponerse A algn/algo to defeat o beat sb/sth
    se impusieron a China por siete carreras a dos they beat China by seven runs to two
    D ( frml) (enterarse) imponerse DE algo to acquaint oneself WITH sth
    E ( Méx) (acostumbrarse) imponerse A algo; to become accustomed TO sth
    * * *

     

    imponer ( conjugate imponer) verbo transitivo (frml)
    a) to impose (frml);


    b) ‹ respeto› to command;

    ‹ temor› to inspire, instill( conjugate instill)
    c) ‹ moda› to set

    imponerse verbo pronominal
    1
    a) ( refl) ‹horario/meta› to set oneself


    c) [color/estilo] to come into fashion

    2 ( hacerse respetar) to assert oneself o one's authority
    3 (frml) ( vencer) to win;

    imponer verbo transitivo
    1 to impose: impuso su criterio contra el de todos, she imposed her viewpoint over that of others
    2 (sobrecoger) to be impressive: la visión de la sangre le impone mucho, he can't stand the sight of blood
    (suscitar respeto) to inspire respect
    3 Fin to deposit
    ' imponer' also found in these entries:
    Spanish:
    sancionar
    - impuse
    - poner
    English:
    apply
    - compel
    - dictate
    - enforce
    - impose
    - keep
    - levy
    - reimpose
    - sanction
    - command
    - embargo
    - inflict
    - mete out
    * * *
    ♦ vt
    1. [forzar a aceptar]
    imponer algo (a alguien) to impose sth (on sb);
    a nadie le gusta que le impongan obligaciones no one likes to have responsibilities forced upon them;
    desde el principio el campeón impuso un fuerte ritmo de carrera the champion set a healthy pace right from the start of the race;
    el profesor impuso silencio en la clase the teacher silenced the class;
    una política impuesta por el Banco Mundial a policy imposed by the World Bank
    2. [aplicar]
    imponer una multa/un castigo a alguien to impose a fine/a punishment on sb;
    el juez le impuso una pena de dos años de cárcel the judge sentenced him to two years' imprisonment;
    le impusieron la difícil tarea de sanear las finanzas de la empresa he was charged with the difficult task of straightening out the company's finances;
    impusieron la obligatoriedad de llevar casco they made it compulsory to wear a helmet
    3. [inspirar] [miedo, admiración] to inspire (a in);
    imponer respeto (a alguien) to command respect (from sb)
    4. [establecer] [moda] to set;
    [costumbre] to introduce
    5. [asignar] [nombre] to give;
    [medalla, condecoración, título] to award;
    a la isla se le impuso el nombre de su descubridor the island was named after the person who discovered it;
    le fue impuesto el título de doctor honoris causa por la Universidad de México he received an honorary doctorate from the University of Mexico
    6. [tributos, cargas fiscales] to impose (a on)
    7. [en banca] to deposit
    ♦ vi
    to be imposing;
    el edificio impone por sus grandes dimensiones the size of the building makes it very imposing;
    imponía con su presencia he had an imposing presence
    * * *
    <part impuesto>
    I v/t
    1 impose; impuesto impose, levy
    2 miedo, respeto inspire
    II v/i be imposing o
    impressive
    * * *
    imponer {60} vt
    1) : to impose
    2) : to confer
    : to be impressive, to command respect
    * * *
    imponer vb to impose

    Spanish-English dictionary > imponer

  • 64 Huygens, Christiaan

    SUBJECT AREA: Horology
    [br]
    b. 14 April 1629 The Hague, the Netherlands
    d. 8 June 1695 The Hague, the Netherlands
    [br]
    Dutch scientist who was responsible for two of the greatest advances in horology: the successful application of both the pendulum to the clock and the balance spring to the watch.
    [br]
    Huygens was born into a cultured and privileged class. His father, Constantijn, was a poet and statesman who had wide interests. Constantijn exerted a strong influence on his son, who was educated at home until he reached the age of 16. Christiaan studied law and mathematics at Ley den University from 1645 to 1647, and continued his studies at the Collegium Arausiacum in Breda until 1649. He then lived at The Hague, where he had the means to devote his time entirely to study. In 1666 he became a Member of the Académie des Sciences in Paris and settled there until his return to The Hague in 1681. He also had a close relationship with the Royal Society and visited London on three occasions, meeting Newton on his last visit in 1689. Huygens had a wide range of interests and made significant contributions in mathematics, astronomy, optics and mechanics. He also made technical advances in optical instruments and horology.
    Despite the efforts of Burgi there had been no significant improvement in the performance of ordinary clocks and watches from their inception to Huygens's time, as they were controlled by foliots or balances which had no natural period of oscillation. The pendulum appeared to offer a means of improvement as it had a natural period of oscillation that was almost independent of amplitude. Galileo Galilei had already pioneered the use of a freely suspended pendulum for timing events, but it was by no means obvious how it could be kept swinging and used to control a clock. Towards the end of his life Galileo described such a. mechanism to his son Vincenzio, who constructed a model after his father's death, although it was not completed when he himself died in 1642. This model appears to have been copied in Italy, but it had little influence on horology, partly because of the circumstances in which it was produced and possibly also because it differed radically from clocks of that period. The crucial event occurred on Christmas Day 1656 when Huygens, quite independently, succeeded in adapting an existing spring-driven table clock so that it was not only controlled by a pendulum but also kept it swinging. In the following year he was granted a privilege or patent for this clock, and several were made by the clockmaker Salomon Coster of The Hague. The use of the pendulum produced a dramatic improvement in timekeeping, reducing the daily error from minutes to seconds, but Huygens was aware that the pendulum was not truly isochronous. This error was magnified by the use of the existing verge escapement, which made the pendulum swing through a large arc. He overcame this defect very elegantly by fitting cheeks at the pendulum suspension point, progressively reducing the effective length of the pendulum as the amplitude increased. Initially the cheeks were shaped empirically, but he was later able to show that they should have a cycloidal shape. The cheeks were not adopted universally because they introduced other defects, and the problem was eventually solved more prosaically by way of new escapements which reduced the swing of the pendulum. Huygens's clocks had another innovatory feature: maintaining power, which kept the clock going while it was being wound.
    Pendulums could not be used for portable timepieces, which continued to use balances despite their deficiencies. Robert Hooke was probably the first to apply a spring to the balance, but his efforts were not successful. From his work on the pendulum Huygens was well aware of the conditions necessary for isochronism in a vibrating system, and in January 1675, with a flash of inspiration, he realized that this could be achieved by controlling the oscillations of the balance with a spiral spring, an arrangement that is still used in mechanical watches. The first model was made for Huygens in Paris by the clockmaker Isaac Thuret, who attempted to appropriate the invention and patent it himself. Huygens had for many years been trying unsuccessfully to adapt the pendulum clock for use at sea (in order to determine longitude), and he hoped that a balance-spring timekeeper might be better suited for this purpose. However, he was disillusioned as its timekeeping proved to be much more susceptible to changes in temperature than that of the pendulum clock.
    [br]
    Principal Honours and Distinctions
    FRS 1663. Member of the Académie Royale des Sciences 1666.
    Bibliography
    For his complete works, see Oeuvres complètes de Christian Huygens, 1888–1950, 22 vols, The Hague.
    1658, Horologium, The Hague; repub., 1970, trans. E.L.Edwardes, Antiquarian
    Horology 7:35–55 (describes the pendulum clock).
    1673, Horologium Oscillatorium, Paris; repub., 1986, The Pendulum Clock or Demonstrations Concerning the Motion ofPendula as Applied to Clocks, trans.
    R.J.Blackwell, Ames.
    Further Reading
    H.J.M.Bos, 1972, Dictionary of Scientific Biography, ed. C.C.Gillispie, Vol. 6, New York, pp. 597–613 (for a fuller account of his life and scientific work, but note the incorrect date of his death).
    R.Plomp, 1979, Spring-Driven Dutch Pendulum Clocks, 1657–1710, Schiedam (describes Huygens's application of the pendulum to the clock).
    S.A.Bedini, 1991, The Pulse of Time, Florence (describes Galileo's contribution of the pendulum to the clock).
    J.H.Leopold, 1982, "L"Invention par Christiaan Huygens du ressort spiral réglant pour les montres', Huygens et la France, Paris, pp. 154–7 (describes the application of the balance spring to the watch).
    A.R.Hall, 1978, "Horology and criticism", Studia Copernica 16:261–81 (discusses Hooke's contribution).
    DV

    Biographical history of technology > Huygens, Christiaan

  • 65 Todd, Leonard Jennett

    [br]
    fl. 1885 London, England
    [br]
    English (?) patentee of steam engines incorporating the uniflow principle.
    [br]
    In a uniflow system, the steam enters a steam engine cylinder at one end, pushes the pistons along, and exhausts through a ring of ports at the centre of the cylinder that are uncovered by movement of the piston. The piston is returned by steam then entering the other end of the cylinder, moving the piston arrangement back, and again making its exit through the central ports. This gave the thermodynamic advantage of the cylinder ends remaining hot and the centre colder with reheating the ends of the cylinder through compression of the residual steam. The principle was first patented by Jacob Perkins in England in 1827 and was tried in America in 1856.
    Little is known about Todd. The addresses given in his patent specifications show that he was living first at South Hornsey and then Stoke Newington, both in Middlesex (now in London). No obituary notices have been traced. He took out a patent in 1885 for a "terminal exhaust engine" and followed this with two more in 1886 and 1887. His aim was to "produce a double acting steam engine which shall work more efficiently, which shall produce and maintain within itself an improved gradation of temperature extending from each of its two Hot Inlets to its common central Cold Outlet". His later patents show the problems he faced with finding suitable valve gears and the compression developing during the return stroke of the piston. It was this last problem, particularly when starting a condensing engine, that probably defeated him through excessive compression pressures. There is some evidence that he hoped to apply his engines to railway locomotives.
    [br]
    Bibliography
    1885, British patent no. 7,301 (terminal exhaust engine). 1886, British patent no. 2,132.
    1887, British patent no. 6,666.
    Further Reading
    R.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (provides the fullest discussion of his patents). H.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press.
    J.Stumpf, 1912, The Una-Flow Steam Engine, Munich: R.Oldenbourg.
    RLH

    Biographical history of technology > Todd, Leonard Jennett

  • 66 obligar

    v.
    to oblige, to bind, to coerce, to compel.
    La policía forzó a Ricardo The police coerced Richard.
    * * *
    Conjugation model [ LLEGAR], like link=llegar llegar
    1 to force, oblige, make
    1 to undertake, promise
    \
    obligar a alguien a hacer algo to force somebody to do something, make somebody do something
    * * *
    verb
    to force, compel, oblige
    * * *
    1. VT
    1) (=forzar) to force
    2) [ley, norma]

    la disposición obliga a todos los contribuyentes — all taxpayers are bound to observe this requirement, this requirement is binding on all taxpayers

    3) (=empujar) to force
    2.
    See:
    * * *
    1.
    verbo transitivo
    a) circunstancia/persona

    el mal tiempo nos obligó a... — bad weather forced o (frml) obliged us to...

    obligar A alguien A QUE + SUBJ — to make somebody + inf

    b) ley/disposición to bind

    las normas obligan a los maestros a... — the rules oblige teachers to...

    2.
    obligarse v pron (refl)

    obligarse A + INF — ( forzarse) to make oneself + inf, force oneself to + inf; ( comprometerse) to undertake to + inf

    * * *
    = bind, compel, constrain, dictate, force, impel, mandate, obligate, oblige, enjoin, enforce.
    Ex. Rules and conditions concerning book lending are the most important items in a library's statute book, binding the reader by specific obligations in the process of borrowing books.
    Ex. It was apparent that the majority of respondents did not feel the need to react as if they were confronting forces compelling the adoption of totally new role.
    Ex. Model II sees the process in terms of the system forcing or constraining the user to deviate from the 'real' problem.
    Ex. Also, economy dictates that every possible entry cannot be printed.
    Ex. If the library wants all users to have passwords, an authorization level of 1 can be assigned in the search function to force the system to require a password.
    Ex. We have already been impelled toward a definition of the future catalog by forces not especially conducive to its development into a more effective instrument.
    Ex. Adequate security for expensive equipment must also be provided for in this decision, and a secluded back room, a remote phone cut-off switch, or a removable keyboard may be mandated.
    Ex. As a result they were obligated to remain generally uninvolved in the patron's efforts to make a decision.
    Ex. The user interested in children's sports, therefore, is obliged, when looking under the general heading, to differentiate between those works which are general and those which are on men's sports.
    Ex. Heightened interest in the nation's founding and in the intentions of the founders enjoins law librarians to provide reference service for research in the history of the constitutional period.
    Ex. Economic necessity will enforce an improvement in the provision of patent information in Hungary.
    ----
    * obligar a = make + it + incumbent upon.
    * obligar a cerrar el negocio = force out of + business, force out of + the marketplace.
    * obligar a Hacer Algo = push into.
    * obligar a + Infinitivo = push towards + Gerundio.
    * obligar a pagar = enforce + payment.
    * obligar a salir = drive out + with a pitchfork, push out.
    * obligar a salir de = force from.
    * obligar a subir el precio = force up + prices.
    * * *
    1.
    verbo transitivo
    a) circunstancia/persona

    el mal tiempo nos obligó a... — bad weather forced o (frml) obliged us to...

    obligar A alguien A QUE + SUBJ — to make somebody + inf

    b) ley/disposición to bind

    las normas obligan a los maestros a... — the rules oblige teachers to...

    2.
    obligarse v pron (refl)

    obligarse A + INF — ( forzarse) to make oneself + inf, force oneself to + inf; ( comprometerse) to undertake to + inf

    * * *
    = bind, compel, constrain, dictate, force, impel, mandate, obligate, oblige, enjoin, enforce.

    Ex: Rules and conditions concerning book lending are the most important items in a library's statute book, binding the reader by specific obligations in the process of borrowing books.

    Ex: It was apparent that the majority of respondents did not feel the need to react as if they were confronting forces compelling the adoption of totally new role.
    Ex: Model II sees the process in terms of the system forcing or constraining the user to deviate from the 'real' problem.
    Ex: Also, economy dictates that every possible entry cannot be printed.
    Ex: If the library wants all users to have passwords, an authorization level of 1 can be assigned in the search function to force the system to require a password.
    Ex: We have already been impelled toward a definition of the future catalog by forces not especially conducive to its development into a more effective instrument.
    Ex: Adequate security for expensive equipment must also be provided for in this decision, and a secluded back room, a remote phone cut-off switch, or a removable keyboard may be mandated.
    Ex: As a result they were obligated to remain generally uninvolved in the patron's efforts to make a decision.
    Ex: The user interested in children's sports, therefore, is obliged, when looking under the general heading, to differentiate between those works which are general and those which are on men's sports.
    Ex: Heightened interest in the nation's founding and in the intentions of the founders enjoins law librarians to provide reference service for research in the history of the constitutional period.
    Ex: Economic necessity will enforce an improvement in the provision of patent information in Hungary.
    * obligar a = make + it + incumbent upon.
    * obligar a cerrar el negocio = force out of + business, force out of + the marketplace.
    * obligar a Hacer Algo = push into.
    * obligar a + Infinitivo = push towards + Gerundio.
    * obligar a pagar = enforce + payment.
    * obligar a salir = drive out + with a pitchfork, push out.
    * obligar a salir de = force from.
    * obligar a subir el precio = force up + prices.

    * * *
    obligar [A3 ]
    vt
    1
    «circunstancia/persona»: obligar a algn A + INF: el mal tiempo nos obligó a retrasar la partida bad weather obliged o forced o compelled us to postpone our departure
    nos obligan a llevar uniforme we are required to o we have to wear uniform
    no lo obligues a comer don't force him to eat, don't make him eat
    lo obligué a pedirle perdón a la abuela I made him apologize to his grandmother
    obligar a algn A QUE + SUBJ to make sb + INF
    oblígalos a que recojan los juguetes make them pick up their toys
    2 «ley/disposición» to bind
    esta ley sólo obliga a los mayores de edad this law only applies to adults, only adults are legally bound by this law
    ( refl)
    1 (forzarse) obligarse A + INF to make oneself + INF, force oneself to + INF
    me obligo a escribir una página todos los días I force myself to write o I make myself write a page every day
    2 (comprometerse) to undertake obligarse A + INF to undertake to + INF
    * * *

     

    obligar ( conjugate obligar) verbo transitivo
    a) obligar a algn a hacer algo to force sb to do sth, to make sb do sth;


    nos obligan a llevar uniforme we are required to wear uniform;
    obligar a algn A QUE haga algo to make sb do sth
    b) [ley/disposición] to bind

    obligar verbo transitivo to force, oblige: nada te obliga a vivir con él, no-one's forcing you to live with him ➣ Ver nota en make
    ' obligar' also found in these entries:
    Spanish:
    comprometer
    - constreñir
    - desalojar
    - echar
    - forzar
    - hacer
    - empujar
    - orillar
    English:
    bind
    - bully
    - compel
    - constrained
    - drive
    - force
    - force down
    - hand
    - make
    - oblige
    - constrain
    - obligate
    * * *
    ♦ vt
    1. [sujeto: persona]
    obligar a alguien (a hacer algo) to force sb to do sth, to make sb do sth;
    yo no quería hacerlo, me obligaron I didn't want to do it, they forced me to o they made me;
    no lo compres, nadie te obliga don't buy it, nobody is forcing you;
    la obligué a descansar I made her have a rest;
    a los jefes de departamento se les obliga a presentar un informe al mes the heads of department are required to hand in a monthly report;
    obligar a alguien a que haga algo to force sb to do sth, to make sb do sth;
    la obligué a que me contestase I forced her to answer me, I made her answer me
    2. [sujeto: ley, norma]
    la ley obliga a todos los ciudadanos a declarar sus ingresos all citizens are required by law to declare their income;
    esta norma obliga a los mayores de dieciocho años this rule applies to people over eighteen
    * * *
    v/t
    1
    :
    obligar a alguien oblige o force s.o. ( a hacer algo to do sth)
    2 de una ley apply to s.o.
    * * *
    obligar {52} vt
    : to force, to require, to oblige
    * * *
    obligar vb to force / to make
    me obligaron a marcharme they forced me to leave / they made me leave

    Spanish-English dictionary > obligar

  • 67 Pretsch, Paul

    [br]
    b. 1808 Vienna, Austria
    d. 1873 Vienna, Austria
    [br]
    Austrian printer and inventor of photogalvanography, one of the earliest commercial photomechanical printing processes.
    [br]
    The son of a goldsmith, Pretsch learned the printing trade in Vienna, where he worked until 1831. He then took up a series of posts in Germany, Belgium and Holland before returning to Vienna, where in 1842 he joined the Imperial State Printing Office. The office was equipped with a photographic studio, and Pretsch was encouraged to explore applications of photography to printing and the graphic arts. In 1851 he was sent to London to take responsibility for the Austrian printing exhibits of the Great Exhibition. This event proved to be a significant international show case for photography and Pretsch saw a great number of recent innovations and made many useful contacts. On returning to Vienna, he began to develop a process for producing printing plates from photographs. Using Talbot's discovery that bichromated gelatine swells in water after exposure to light, he electrotyped the relief image obtained. In 1854 Pretsch resigned from his post in Vienna and travelled back to London, where he patented his process, calling it photogalvanography. He went on to form a business, the Photo-Galvano-Graphic Company, to print and market his pictures.
    The Photographic Manager of the company was the celebrated photographer Roger Fenton, recently returned from his exploits on the battlefields of the Crimea. In 1856 the company issued a large serial work, Photographic Art Treasures, illustrated with Pretsch's pictures, which created considerable interest. The venture did not prove a commercial success, however, and although further plates were made and issued, Fenton found other interests to pursue and Pretsch was left to try to apply some of his ideas to lithography. This too had no successful outcome, and in 1863 Pretsch returned to Vienna. He was reappointed to a post at the Imperial State Printing Office, but his health failed and he made no further progress with his processes.
    [br]
    Bibliography
    9 November 1854, British patent no. 2,373. 11 August 1855, British patent no. 1,824.
    Further Reading
    J.M.Eder, 1945, History of Photography, trans. E. Epstean, New York.
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London. H.J.P.Arnold, 1977, William Henry Fox Talbot, London (an account of the relationship with Talbot's process).
    JW

    Biographical history of technology > Pretsch, Paul

  • 68 Radcliffe, William

    SUBJECT AREA: Textiles
    [br]
    b. 1761 Mellor, Cheshire, England
    d. 1842 Mellor, Cheshire, England
    [br]
    English inventor of the sizing machine.
    [br]
    Radcliffe was brought up in the textile industry and learned carding and spinning as a child. When he was old enough, he became a weaver. It was a time when there were not enough weavers to work up all the yarn being spun on the recently invented spinning machines, so some yarn was exported. Radcliffe regarded this as a sin; meetings were held to prohibit the export, and Radcliffe promised to use his best endeavours to discover means to work up the yarn in England. He owned a mill at Mellor and by 1801 was employing over 1,000 hand-loom weavers. He wanted to improve their efficiency so they could compete against power looms, which were beginning to be introduced at that time.
    His first step was to divide up as much as possible the different weaving processes, not unlike the plan adopted by Arkwright in spinning. In order to strengthen the warp yarns made of cotton and to reduce their tendency to fray during weaving, it was customary to apply an adhesive substance such as starch paste. This was brushed on as the warp was unwound from the back beam during weaving, so only short lengths could be treated before being dried. Instead of dressing the warp in the loom as was hitherto done, Radcliffe had it dressed in a separate machine, relieving the weaver of the trouble and saving the time wasted by the method previously used. Radcliffe employed a young man names Thomas Johnson, who proved to be a clever mechanic. Radcliffe patented his inventions in Johnson's name to avoid other people, especially foreigners, finding out his ideas. He took out his first patent, for a dressing machine, in March 1803 and a second the following year. The combined result of the two patents was the introduction of a beaming machine and a dressing machine which, in addition to applying the paste to the yarns and then drying them, wound them onto a beam ready for the loom. These machines enabled the weaver to work a loom with fewer stoppages; however, Radcliffe did not anticipate that his method of sizing would soon be applied to power looms as well and lead to the commercial success of powered weaving. Other manufacturers quickly adopted Radcliffe's system, and Radcliffe himself soon had to introduce power looms in his own business.
    Radcliffe improved the hand looms themselves when, with the help of Johnson, he devised a cloth taking-up motion that wound the woven cloth onto a roller automatically as the weaver operated the loom. Radcliffe and Johnson also developed the "dandy loom", which was a more compact form of hand loom and was also later adapted for weaving by power. Radcliffe was among the witnesses before the Parliamentary Committee which in 1808 awarded Edmund Cartwright a grant for his invention of the power loom. Later Radcliffe was unsuccessfully to petition Parliament for a similar reward for his contributions to the introduction of power weaving. His business affairs ultimately failed partly through his own obstinacy and his continued opposition to the export of cotton yarn. He lived to be 81 years old and was buried in Mellor churchyard.
    [br]
    Bibliography
    1811, Exportation of Cotton Yarn and Real Cause of the Distress that has Fallen upon the Cotton Trade for a Series of Years Past, Stockport.
    1828, Origin of the New System of Manufacture, Commonly Called "Power-Loom Weaving", Stockport (this should be read, even though it is mostly covers Radcliffe's political aims).
    Further Reading
    A.Barlow, 1870, The History and Principles of Weaving by Hand and by Power, London (provides an outline of Radcliffe's life and work).
    W.English, 1969, The Textile Industry, London (a general background of his inventions). R.L.Hills, 1970, Power in the Industrial Revolution, Manchester (a general background).
    D.J.Jeremy, 1981, Transatlantic Industrial Revolution. The Diffusion of Textile Technologies Between Britain and America, 1790–1830s, Oxford (discusses the spread of the sizing machine in America).
    RLH

    Biographical history of technology > Radcliffe, William

  • 69 Tompion, Thomas

    SUBJECT AREA: Horology
    [br]
    baptized 25 July 1639 Ickwell Green, England
    d. 20 November 1713 London, England
    [br]
    English clock-and watchmaker of great skill and ingenuity who laid the foundations of his country's pre-eminence in that field.
    [br]
    Little is known about Tompion's early life except that he was born into a family of blacksmiths. When he was admitted into the Clockmakers' Company in 1671 he was described as a "Great Clockmaker", which meant a maker of turret clocks, and as these clocks were made of wrought iron they would have required blacksmithing skills. Despite this background, he also rapidly established his reputation as a watchmaker. In 1674 he moved to premises in Water Lane at the sign of "The Dial and Three Crowns", where his business prospered and he remained for the rest of his life. Assisted by journeymen and up to eleven apprentices at any one time, the output from his workshop was prodigious, amounting to over 5,000 watches and 600 clocks. In his lifetime he was famous for his watches, as these figures suggest, but although they are of high quality they do not differ markedly from those produced by other London watchmakers of that period. He is now known more for the limited number of elaborate clocks that he produced, such as the equation clock and the spring-driven clock of a year's duration, which he made for William III. Around 1711 he took into partnership his nephew by marriage, George Graham, who carried on the business after his death.
    Although Tompion does not seem to have been particularly innovative, he lived at a time when great advances were being made in horology, which his consummate skill as a craftsman enabled him to exploit. In this he was greatly assisted by his association with Robert Hooke, for whom Tompion constructed a watch with a balance spring in 1675; at that time Hooke was trying to establish his priority over Huygens for this invention. Although this particular watch was not successful, it made Tompion aware of the potential of the balance spring and he became the first person in England to apply Huygens's spiral spring to the balance of a watch. Although Thuret had constructed such a watch somewhat earlier in France, the superior quality of Tompion's wheel work, assisted by Hooke's wheel-cutting engine, enabled him to dominate the market. The anchor escapement (which reduced the amplitude of the pendulum's swing) was first applied to clocks around this time and produced further improvements in accuracy which Tompion and other makers were able to utilize. However, the anchor escapement, like the verge escapement, produced recoil (the clock was momentarily driven in reverse). Tompion was involved in attempts to overcome this defect with the introduction of the dead-beat escapement for clocks and the horizontal escapement for watches. Neither was successful, but they were both perfected later by George Graham.
    [br]
    Principal Honours and Distinctions
    Master of the Clockmakers' Company 1703.
    Bibliography
    1695, with William Houghton and Edward Barlow, British patent no. 344 (for a horizontal escapement).
    Further Reading
    R.W.Symonds, 1951, Thomas Tompion, His Life and Work, London (a comprehensive but now slightly dated account).
    H.W.Robinson and W.Adams (eds), 1935, The Diary of Robert Hooke (contains many references to Tompion).
    D.Howse, 1970, The Tompion clocks at Greenwich and the dead-beat escapement', Antiquarian Horology 7:18–34, 114–33.
    DV

    Biographical history of technology > Tompion, Thomas

  • 70 Elkington, George Richard

    SUBJECT AREA: Metallurgy
    [br]
    b. 17 October 1801 Birmingham England
    d. 22 September 1865 Pool Park, Denbighshire, England
    [br]
    English pioneer in electroplating.
    [br]
    He was apprenticed to his uncles, makers of metalware, in 1815 and showed such aptitude for business that he was taken into partnership. On their deaths, Elkington assumed sole ownership of the business. In conjunction with his cousin Henry (1810–52), by unrelenting enterprise, he established an industry for electroplating and electrogilding. Up until c.1840, silver-plated goods were produced by rolling or soldering thin sheets of silver to a base metal, such as copper. Back in 1801, the English chemist William Wollaston had deposited one metal upon another by means of an electric current generated from a voltaic pile or battery. In the 1830s, certain inventors, such as Bessemer used this result to produce plated articles and these efforts in turn induced the Elkingtons to apply the method in their trade. In 1836 and 1837 they took out patents for "mercurial gilding", and one patent of 1838 refers to a separate electric current. In 1840 they bought from John Wright, a Birmingham surgeon, his discovery of what proved to be the best electroplating solution: namely, solutions of cyanides of gold and silver in potassium cyanide. They also purchased rights to use the electric machine invented by J.S. Woolrich. Armed with these techniques, the Elkingtons produced in their large new works in Newhall Street a wide range of gold-and silver-plated decorative and artistic ware. Henry was particularly active on the artistic side of the business, as was their employee Alexander Parkes. For some twenty-five years, Britain enjoyed a virtual monopoly of this kind of ware, due largely to the enterprise of the Elkingtons, although by the end of the century rising tariffs had closed many foreign markets and the lead had passed to Germany. George spent all his working life in Birmingham, taking some part in the public life of the city. He was a governor of King Edward's Grammar School and a borough magistrate. He was also a caring employer, setting up houses and schools for his workers.
    [br]
    Bibliography
    LRD

    Biographical history of technology > Elkington, George Richard

  • 71 Anwalt

    Anwalt m 1. GEN advocate; 2. RECHT (AE) attorney, (BE) barrister, legal counsel, (AE) practicing lawyer, (BE) practising lawyer, (BE) solicitor (Bevollmächtigter) • jmdn. als Anwalt zulassen RECHT (AE) admit sb to the bar, (BE) call sb to the bar
    * * *
    m 1. < Geschäft> advocate; 2. < Recht> Bevollmächtigter attorney (AE), barrister (BE), legal counsel, practicing lawyer (AE), practising lawyer (BE), solicitor (BE) ■ jmdn. als Anwalt zulassen < Recht> admit sb to the bar (AE), call sb to the bar (BE)
    * * *
    Anwalt
    lawyer, solicitor (Br.), attorney at law (US), law agent (Scot.), (im Prozess) pleader, barrister-at-law (Br.), counsel (Br.), counsellor [at-law] (US);
    • mit der ständigen Vertretung beauftragter Anwalt standing counsel (Br.);
    • beratender Anwalt special pleader, counsel in chambers (Br.), chamber counsel (Br.), consulting barrister (Br.), office lawyer (US);
    • bewährter Anwalt experienced lawyer;
    • erfolgreicher Anwalt budding lawyer;
    • als Treuhänder fungierender Anwalt solicitor-trustee (Br.);
    • gegnerischer Anwalt opposing counsel (Br.);
    • klägerischer Anwalt counsel for the plaintiff (Br.), plaintiff’s solicitor;
    • plädierender Anwalt barrister (Br.);
    • auf Arbeitsrecht spezialisierter Anwalt labo(u)r-relations attorney;
    • auf Gesellschaftsrecht spezialisierter Anwalt corporation lawyer (US);
    • auf Immobilienrecht spezialisierter Anwalt property (real-estate) lawyer;
    • versierter Anwalt full-blown (-fledged) lawyer (barrister);
    • zugelassener Anwalt authorized counsellor (US);
    • Anwalt des Klägers plaintiff’s counsel (Br.);
    • Anwalt für Steuersachen tax lawyer (attorney, US);
    • Anwalt beim Verfahren zur Strafzumessung (in der Straffestlegungsphase) Keenan counsel (US);
    • Anwalt beauftragen to instruct an attorney (US);
    • sich mit seinem Anwalt beraten to confer with one’s counsel (Br.);
    • laufend einen Anwalt beschäftigen to employ a solicitor (Br.), to retain a lawyer;
    • Anwalt zur laufenden Beratung engagieren to retain a counsel (Br.) (lawyer);
    • seinem Anwalt Weisungen erteilen to brief (instruct) one’s lawyer;
    • sich als Anwalt einen Namen machen to establish one’s reputation as a lawyer;
    • sich einen Anwalt nehmen to retain (brief) a barrister (counsel) (Br.), to engage the services of a lawyer, to hire an attorney (US);
    • vollbeschäftigter Anwalt sein to have plenty of briefs;
    • durch einen Anwalt vertreten sein to be represented by counsel (Br.);
    • als Anwalt beim Patentamt zugelassen sein to be recognized to practise before the Patent Office (US);
    • jem. einen Anwalt stellen to provide s. o. with an attorney (US);
    • Angelegenheit einem Anwalt übergeben (übertragen) to put a matter in the hands of a lawyer;
    • Anwalt zurate ziehen to call in the aid of an attorney (US);
    • als Anwalt zulassen to admit a solicitor (Br.);
    • Anwalt zuziehen to consult a solicitor (Br.) (an attorney, US), to employ a counsel (Br.).
    bemühen, Anwalt
    to consult a lawyer;
    • sich um Aufträge bemühen to canvass orders;
    • sich um Auslandshilfe bemühen to scramble for aid;
    • sich intensiv um Kunden bemühen to rub shoulders with clients;
    • sich um seine Kundschaft bemühen to solicit one’s custom;
    • sich persönlich bemühen to apply in person;
    • sich ernsthaft um eine Stellung bemühen to try hard for a job;
    • sich um einen Submissionsvertrag bemühen to tender for a supply of goods.

    Business german-english dictionary > Anwalt

  • 72 Levers (Leavers), John

    SUBJECT AREA: Textiles
    [br]
    fl. 1812–21 England
    d. after 1821 Rouen, France
    [br]
    English improver of lace-making machines that formed the basis for many later developments.
    [br]
    John Heathcote had shown that it was possible to make lace by machine with his patents of 1808 and 1809. His machines were developed and improved by John Levers. Levers was originally a hosiery frame-smith and setter-up at Sutton-in-Ashfield but moved to Nottingham, where he extended his operations to the construction of point-net and warp-lace machinery. In the years 1812 and 1813 he more or less isolated himself in the garret of a house in Derby Road, where he assembled his lacemaking machine by himself. He was helped by two brothers and a nephew who made parts, but they saw it only when it was completed. Financial help for making production machines came from the firm of John Stevenson \& Skipwith, lace manufacturers in Nottingham. Levers never sought a patent, as he was under the mistaken impression that additions or improvements to an existing patented machine could not be protected. An early example of the machine survives at the Castle Museum in Nottingham. Although his prospects must have seemed good, for some reason Levers dissolved his partnership with Stevenson \& Co. and continued to work on improving his machine. In 1817 he altered it from the horizontal to the upright position, building many of the machines each year. He was a friendly, kind-hearted man, but he seems to have been unable to apply himself to his business, preferring the company of musicians—he was a bandmaster of the local militia—and was soon frequently without money, even to buy food for his family. He emigrated in 1821 to Rouen, France, where he set up his lace machines and where he subsequently died; when or in what circumstances is unknown. His machine continued to be improved and was adapted to work with the Jacquard mechanism to select the pattern.
    [br]
    Further Reading
    W.Felkin, 1967, History of the Machine-wrought Hosiery and Lace Manufactures, reprint, Newton Abbot (orig. pub. 1867) (the main account of the Levers machine).
    W.English, 1969, The Textile Industry, London (a brief account of the Levers lace machine).
    D.M.Smith, 1965, Industrial Archaeology of the East Midlands, Dawlish (includes an illustration of Levers's machine).
    RLH

    Biographical history of technology > Levers (Leavers), John

  • 73 Monier, Joseph

    [br]
    b. 1823 France
    d. 1906 Paris, France
    [br]
    French gardener and one of the principal inventors of reinforced concrete.
    [br]
    Monier was a commercial gardener who in the course of his work was struck with the idea of inserting iron reinforcement in concrete tubs such as were used for growing orange trees. He patented this idea in 1867 and exhibited his invention the same year at the Paris Exposition. It soon occurred to him to apply the same principles to other engineering structures such as railway sleepers, pipes, floors, arches and bridges. In 1878 he took out a French patent for reinforced concrete beams and held numerous other patents for the material. Although he was not the only one to realize the benefits of combining a concrete girder or slab to resist compressive forces with iron or steel wires or rods to resist tensile stresses, "Das System Monier" was known as such by 1887 throughout Europe.
    [br]
    Further Reading
    J.W.De Courcy, 1987, "The emergence of reinforced concrete", Structural Engineer 65A: 316.
    IMcN

    Biographical history of technology > Monier, Joseph

  • 74 Roebuck, John

    SUBJECT AREA: Chemical technology
    [br]
    b. 1718 Sheffield, England
    d. 17 July 1794
    [br]
    English chemist and manufacturer, inventor of the lead-chamber process for sulphuric acid.
    [br]
    The son of a prosperous Sheffield manufacturer, Roebuck forsook the family business to pursue studies in medicine at Edinburgh University. There he met Dr Joseph Black (1727–99), celebrated Professor of Chemistry, who aroused in Roebuck a lasting interest in chemistry. Roebuck continued his studies at Leyden, where he took his medical degree in 1742. He set up in practice in Birmingham, but in his spare time he continued chemical experiments that might help local industries.
    Among his early achievements was his new method of refining gold and silver. Success led to the setting up of a large laboratory and a reputation as a chemical consultant. It was at this time that Roebuck devised an improved way of making sulphuric acid. This vital substance was then made by burning sulphur and nitre (potassium nitrate) over water in a glass globe. The scale of the process was limited by the fragility of the glass. Roebuck substituted "lead chambers", or vessels consisting of sheets of lead, a metal both cheap and resistant to acids, set in wooden frames. After the first plant was set up in 1746, productivity rose and the price of sulphuric acid fell sharply. Success encouraged Roebuck to establish a second, larger plant at Prestonpans, near Edinburgh. He preferred to rely on secrecy rather than patents to preserve his monopoly, but a departing employee took the secret with him and the process spread rapidly in England and on the European continent. It remained the standard process until it was superseded by the contact process towards the end of the nineteenth century. Roebuck next turned his attention to ironmaking and finally selected a site on the Carron river, near Falkirk in Scotland, where the raw materials and water power and transport lay close at hand. The Carron ironworks began producing iron in 1760 and became one of the great names in the history of ironmaking. Roebuck was an early proponent of the smelting of iron with coke, pioneered by Abraham Darby at Coalbrookdale. To supply the stronger blast required, Roebuck consulted John Smeaton, who c. 1760 installed the first blowing cylinders of any size.
    All had so far gone well for Roebuck, but he now leased coal-mines and salt-works from the Duke of Hamilton's lands at Borrowstonness in Linlithgow. The coal workings were plagued with flooding which the existing Newcomen engines were unable to overcome. Through his friendship with Joseph Black, patron of James Watt, Roebuck persuaded Watt to join him to apply his improved steam-engine to the flooded mine. He took over Black's loan to Watt of £1,200, helped him to obtain the first steam-engine patent of 1769 and took a two-thirds interest in the project. However, the new engine was not yet equal to the task and the debts mounted. To satisfy his creditors, Roebuck had to dispose of his capital in his various ventures. One creditor was Matthew Boulton, who accepted Roebuck's two-thirds share in Watt's steam-engine, rather than claim payment from his depleted estate, thus initiating a famous partnership. Roebuck was retained to manage Borrowstonness and allowed an annuity for his continued support until his death in 1794.
    [br]
    Further Reading
    Memoir of John Roebuck in J.Roy. Soc. Edin., vol. 4 (1798), pp. 65–87.
    S.Gregory, 1987, "John Roebuck, 18th century entrepreneur", Chem. Engr. 443:28–31.
    LRD

    Biographical history of technology > Roebuck, John

  • 75 Small, James

    [br]
    b. c. 1742 Scotland
    d. 1793 Scotland
    [br]
    Scottish engineer who was first to apply scientific experiment and calculation to the design of ploughs.
    [br]
    James Small served his apprenticeship as a wright and blacksmith at Hutton in Berwickshire, and then travelled for a time in England. It is possible that he learned his trade from the ploughwright Pashley, who ran the "Manufactory" in Rotherham. On his return to Scotland he settled at Blackadder Mount, Berwickshire, and there began to make his ploughs. He used a spring balance to determine the draft of the plough and fashioned the mouldboard from a soft wood so that the wear would show quickly on its surface. Repeated trials indicated the best shape to be adopted, and he had his mouldboards cast at the Carron Ironworks. At trials held at Dalkeith, Small's plough, pulled by two horses, outperformed the old Scotch plough hauled by as many as eight oxen, and his ploughs were soon to be found in all areas of the country. He established workshops in Leith Walk, where he made ploughs and other implements. It was in Edinburgh in 1784 that he published Treatise on Ploughs, in which he set out his methods and calculations. He made no attempt to patent his ideas, feeling that they should be available to all, and the book provided sufficient information for it to be used by his rivals. As a result he died a poor man at the age of 52. His family were supported with a £1,500 subscription raised on their behalf by Sir John Sinclair, President of the Board of Agriculture.
    [br]
    Bibliography
    1784, A Treatise on Ploughs and Wheel Carriages.
    Further Reading
    J.B.Passmore, 1930, The English Plough, Reading: University of Reading (provides a history of plough development from the eighth century, and deals in detail with Small's work).
    AP

    Biographical history of technology > Small, James

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