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engraving+machine

  • 41 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

  • 42 Berliner, Emile

    SUBJECT AREA: Recording
    [br]
    b. 20 May 1851 Hannover, Germany
    d. 3 August 1929 Montreal, Canada
    [br]
    German (naturalized American) inventor, developer of the disc record and lateral mechanical replay.
    [br]
    After arriving in the USA in 1870 and becoming an American citizen, Berliner worked as a dry-goods clerk in Washington, DC, and for a period studied electricity at Cooper Union for the Advancement of Science and Art, New York. He invented an improved microphone and set up his own experimental laboratory in Washington, DC. He developed a microphone for telephone use and sold the rights to the Bell Telephone Company. Subsequently he was put in charge of their laboratory, remaining in that position for eight years. In 1881 Berliner, with his brothers Joseph and Jacob, founded the J.Berliner Telephonfabrik in Hanover, the first factory in Europe specializing in telephone equipment.
    Inspired by the development work performed by T.A. Edison and in the Volta Laboratory (see C.S. Tainter), he analysed the existing processes for recording and reproducing sound and in 1887 developed a process for transferring lateral undulations scratched in soot into an etched groove that would make a needle and diaphragm vibrate. Using what may be regarded as a combination of the Phonautograph of Léon Scott de Martinville and the photo-engraving suggested by Charles Cros, in May 1887 he thus demonstrated the practicability of the laterally recorded groove. He termed the apparatus "Gramophone". In November 1887 he applied the principle to a glass disc and obtained an inwardly spiralling, modulated groove in copper and zinc. In March 1888 he took the radical step of scratching the lateral vibrations directly onto a rotating zinc disc, the surface of which was protected, and the subsequent etching created the groove. Using well-known principles of printing-plate manufacture, he developed processes for duplication by making a negative mould from which positive copies could be pressed in a thermoplastic compound. Toy gramophones were manufactured in Germany from 1889 and from 1892–3 Berliner manufactured both records and gramophones in the USA. The gramophones were hand-cranked at first, but from 1896 were based on a new design by E.R. Johnson. In 1897–8 Berliner spread his activities to England and Germany, setting up a European pressing plant in the telephone factory in Hanover, and in 1899 a Canadian company was formed. Various court cases over patents removed Berliner from direct running of the reconstructed companies, but he retained a major economic interest in E.R. Johnson's Victor Talking Machine Company. In later years Berliner became interested in aeronautics, in particular the autogiro principle. Applied acoustics was a continued interest, and a tile for controlling the acoustics of large halls was successfully developed in the 1920s.
    [br]
    Bibliography
    16 May 1888, Journal of the Franklin Institute 125 (6) (Lecture of 16 May 1888) (Berliner's early appreciation of his own work).
    1914, Three Addresses, privately printed (a history of sound recording). US patent no. 372,786 (basic photo-engraving principle).
    US patent no. 382,790 (scratching and etching).
    US patent no. 534,543 (hand-cranked gramophone).
    Further Reading
    R.Gelatt, 1977, The Fabulous Phonograph, London: Cassell (a well-researched history of reproducible sound which places Berliner's contribution in its correct perspective). J.R.Smart, 1985, "Emile Berliner and nineteenth-century disc recordings", in Wonderful
    Inventions, ed. Iris Newson, Washington, DC: Library of Congress, pp. 346–59 (provides a reliable account).
    O.Read and W.L.Welch, 1959, From Tin Foil to Stereo, Indianapolis: Howard W.Sams, pp. 119–35 (provides a vivid account, albeit with less precision).
    GB-N

    Biographical history of technology > Berliner, Emile

  • 43 representar

    v.
    1 to represent.
    este cuadro representa la Última Cena this painting depicts the Last Supper
    Ellos representan campiñas They depict fields.
    María representa a la madrastra Mary plays the part of the stepmom.
    Esto representa lo malo This represents the bad.
    representa a varios artistas she acts as an agent for several artists
    3 to look.
    representa unos 40 años she looks about 40
    4 to mean.
    representa el 50 por ciento del consumo interno it accounts for 50 percent of domestic consumption
    representa mucho para él it means a lot to him
    5 to perform (Teatro) (función).
    6 to act out, to represent, to act.
    Ella representó bien esa escena She acted the scene out very well.
    7 to act in someone's representation, to represent, to act in behalf of, to act in representation of.
    María representa a Ricardo Mary acts in John's representation.
    * * *
    1 (gen) to represent
    2 (símbolo) to represent, stand for
    3 TEATRO (obra) to perform; (papel) to play (the part of)
    4 (aparentar) to appear to be, look
    5 (importar) to mean
    1 (imaginarse) to imagine, picture
    * * *
    verb
    •
    * * *
    1. VT
    1) (=actuar en nombre de) [+ país, votantes] to represent; [+ cliente, acusado] to act for, represent
    2) (=simbolizar) to symbolize, represent
    3) (=reproducir) to depict

    nuevas formas de representar el mundo — new ways of representing o portraying o depicting the world

    4) (=equivaler a) [+ porcentaje, mejora, peligro] to represent; [+ amenaza] to pose, represent

    obtuvieron unos beneficios de 1,7 billones, lo que representa un incremento del 28% sobre el año pasado — they made profits of 1.7 billion, which represents an increase of 28% on last year

    los bantúes representan el 70% de los habitantes de Suráfrica — the Bantu account for o represent 70% of the inhabitants of South Africa

    5) (=requerir) [+ trabajo, esfuerzo, sacrificio] to involve
    6) (Teat) [+ obra] to perform; [+ papel] to play

    ¿quién va a representar el papel que tenía antes la URSS? — who's going to play the part o role previously played by the USSR?

    7) (=aparentar) [+ edad] to look
    8) (=hacer imaginar) to point out
    2.
    See:
    * * *
    1.
    verbo transitivo
    1) <persona/organización/país> to represent
    2) < obra> to perform, put on
    3) ( aparentar) to look
    4) ( simbolizar) to symbolize
    5) ( reproducir) dibujo/fotografía/escena to show, depict; obra/novela to portray, depict
    6) (equivaler a, significar) to represent

    esto representa un aumento del 5% — this represents a 5% increase

    2.
    representarse v pron to picture, imagine
    * * *
    = account for, act out, become + cast, depict, depict, embody, package, represent, stage, stand for, render, portray, symbolise [symbolize, -USA], enact, dramatise [dramatize, -USA], plot, chart, map, incarnate, stand as, betoken, picture, construct, encapsulate.
    Ex. The major four categories of physical forms outlined so far account for most of the published indexes and catalogues.
    Ex. The use of the form connotes peculiarity (the people so described are acting out a somewhat inappropriate role) and passiveness (they are not actively participating in that role).
    Ex. Any action that is repeated frequently become cast into a pattern which can be reproduced with an economy of effort which, ipso facto, is apprehended by its performer as a pattern.
    Ex. Trial procedures aiming to increase service recognition and service usage, and the evaluation thereof, are then depicted.
    Ex. A globe is a model of a celestial body, usually the earth or the celestial sphere, depicted on the surface of a sphere.
    Ex. In alphabetical indexing languages, such as are embodied in thesauri and subject headings lists, subject terms are the alphabetical names of the subjects.
    Ex. Documents rarely exactly match a user's requirements because information can be packaged in almost as many different ways as there are participants in a subject area.
    Ex. Cartographic materials are, according to AACR2, all the materials that represent, in whole or in part, the earth or any celestial body.
    Ex. Book shops also participated by staging similar special features.
    Ex. MARC stands for Machine Readable Cataloguing.
    Ex. The eventuality is, admittedly, remote but it is also necessary to render the imprint statement in this amount of detail.
    Ex. Hardy had a tragic vision of life and that indeed is what the novels portray.
    Ex. The library symbolises freedom for the reader to pursue his own desires, however inchoate.
    Ex. The author describes how, as a teacher, she introduced pre-school children to books by reading to them, and developed older children's critical interest by reading, discussing and enacting popular fables.
    Ex. This article describes how a group of 12-18 teenage volunteers formed a group to dramatise children's books for young children and their parents at a public library.
    Ex. The technique 'Trend Projection' graphically plots future trends based on past experience.
    Ex. This article describes how Australia was depicted on early maps of the world charted by the Portuguese and Dutch seafarers from 1452 to the present day.
    Ex. Defining a revolution in progress is like mapping the lava flow from an active volcano well nigh impossible and extremely dangerous.
    Ex. For them, it incarnated modernity and materialism, civilization rather than culture, materialism rather than spiritualism.
    Ex. Meantime, our new library stand as as a confident symbol of the importance of ALL librarires to the nation's cultural, educational and economic success.
    Ex. The faintly irritating moralising tone of this book betokens a real human interest, which must be recovered if there is to be a dialogue of real content.
    Ex. In most cases authors pictured incest as an assault against the innocent, but they often saw the abuser, especially the father, as a victim of himself and he is rarely punished with prison.
    Ex. It is argued that newspaper reporting of bigamy constructs bigamists as being a threat to the institution of marriage.
    Ex. The Manifesto encapsulates the principles and priorities of public libraries in widely varying contexts.
    ----
    * estar demasiado representado = overrepresent.
    * imposible de representar = unmappable.
    * que no representa reto = unchallenging.
    * representar a = act for.
    * representar con una gráfica = graph.
    * representar en exceso = overrepresent.
    * representar en mente = visualise [visualize, -USA].
    * representar gráficamente = map.
    * representar insuficientemente = underrepresent [under-represent].
    * representar la diferencia entre... y = represent + the difference between... and.
    * representar mal = misrepresent.
    * representar una idea = dramatise + idea.
    * representar una obra = put on + performance, put on + play.
    * representar un peligro = pose + danger.
    * término que representa un único concepto = one concept term.
    * volver a representar = remap.
    * * *
    1.
    verbo transitivo
    1) <persona/organización/país> to represent
    2) < obra> to perform, put on
    3) ( aparentar) to look
    4) ( simbolizar) to symbolize
    5) ( reproducir) dibujo/fotografía/escena to show, depict; obra/novela to portray, depict
    6) (equivaler a, significar) to represent

    esto representa un aumento del 5% — this represents a 5% increase

    2.
    representarse v pron to picture, imagine
    * * *
    = account for, act out, become + cast, depict, depict, embody, package, represent, stage, stand for, render, portray, symbolise [symbolize, -USA], enact, dramatise [dramatize, -USA], plot, chart, map, incarnate, stand as, betoken, picture, construct, encapsulate.

    Ex: The major four categories of physical forms outlined so far account for most of the published indexes and catalogues.

    Ex: The use of the form connotes peculiarity (the people so described are acting out a somewhat inappropriate role) and passiveness (they are not actively participating in that role).
    Ex: Any action that is repeated frequently become cast into a pattern which can be reproduced with an economy of effort which, ipso facto, is apprehended by its performer as a pattern.
    Ex: Trial procedures aiming to increase service recognition and service usage, and the evaluation thereof, are then depicted.
    Ex: A globe is a model of a celestial body, usually the earth or the celestial sphere, depicted on the surface of a sphere.
    Ex: In alphabetical indexing languages, such as are embodied in thesauri and subject headings lists, subject terms are the alphabetical names of the subjects.
    Ex: Documents rarely exactly match a user's requirements because information can be packaged in almost as many different ways as there are participants in a subject area.
    Ex: Cartographic materials are, according to AACR2, all the materials that represent, in whole or in part, the earth or any celestial body.
    Ex: Book shops also participated by staging similar special features.
    Ex: MARC stands for Machine Readable Cataloguing.
    Ex: The eventuality is, admittedly, remote but it is also necessary to render the imprint statement in this amount of detail.
    Ex: Hardy had a tragic vision of life and that indeed is what the novels portray.
    Ex: The library symbolises freedom for the reader to pursue his own desires, however inchoate.
    Ex: The author describes how, as a teacher, she introduced pre-school children to books by reading to them, and developed older children's critical interest by reading, discussing and enacting popular fables.
    Ex: This article describes how a group of 12-18 teenage volunteers formed a group to dramatise children's books for young children and their parents at a public library.
    Ex: The technique 'Trend Projection' graphically plots future trends based on past experience.
    Ex: This article describes how Australia was depicted on early maps of the world charted by the Portuguese and Dutch seafarers from 1452 to the present day.
    Ex: Defining a revolution in progress is like mapping the lava flow from an active volcano well nigh impossible and extremely dangerous.
    Ex: For them, it incarnated modernity and materialism, civilization rather than culture, materialism rather than spiritualism.
    Ex: Meantime, our new library stand as as a confident symbol of the importance of ALL librarires to the nation's cultural, educational and economic success.
    Ex: The faintly irritating moralising tone of this book betokens a real human interest, which must be recovered if there is to be a dialogue of real content.
    Ex: In most cases authors pictured incest as an assault against the innocent, but they often saw the abuser, especially the father, as a victim of himself and he is rarely punished with prison.
    Ex: It is argued that newspaper reporting of bigamy constructs bigamists as being a threat to the institution of marriage.
    Ex: The Manifesto encapsulates the principles and priorities of public libraries in widely varying contexts.
    * estar demasiado representado = overrepresent.
    * imposible de representar = unmappable.
    * que no representa reto = unchallenging.
    * representar a = act for.
    * representar con una gráfica = graph.
    * representar en exceso = overrepresent.
    * representar en mente = visualise [visualize, -USA].
    * representar gráficamente = map.
    * representar insuficientemente = underrepresent [under-represent].
    * representar la diferencia entre... y = represent + the difference between... and.
    * representar mal = misrepresent.
    * representar una idea = dramatise + idea.
    * representar una obra = put on + performance, put on + play.
    * representar un peligro = pose + danger.
    * término que representa un único concepto = one concept term.
    * volver a representar = remap.

    * * *
    vt
    A ‹persona/organización/país› to represent
    no estaba representado por un abogado he was not represented by a lawyer
    representó a Suecia en los campeonatos he represented Sweden in the championships, he played ( o swam etc) for Sweden in the championships
    los que no puedan asistir deben hacerse representar por alguien those who cannot attend should send a representative o proxy
    B ‹obra› to perform, put on; ‹papel› to play
    representó el papel de Cleopatra she played Cleopatra o the part of Cleopatra
    C (aparentar) to look
    no representa la edad que tiene he doesn't look the age he is
    representa unos cuarenta años she looks about forty
    no representa lo que costó it doesn't look as expensive as it was
    D (simbolizar) to symbolize
    la paloma representa la paz the dove symbolizes o is a symbol of peace
    E (reproducir) «dibujo/fotografía» to show, depict
    la medalla representa a la Virgen the medallion depicts the Virgin Mary
    la escena representa una calle de los arrabales the scene shows o depicts a street in the poor quarters
    la obra representa fielmente la sociedad de fines de siglo the play accurately portrays society at the turn of the century
    F (equivaler a, significar) to represent
    esto representa un aumento del 5% con respecto al año pasado this represents a 5% increase on last year
    nos representa un gasto inesperado it means o involves an unexpected expense
    introducir la modificación representaría tres días de trabajo introducing the modification would mean o involve three days' work
    to picture
    ¿te lo puedes representar sin barba? can you picture o imagine him without a beard?
    * * *

     

    representar ( conjugate representar) verbo transitivo
    1 ‹persona/organización/país› to represent
    2 ‹ obra› to perform, put on;
    ‹ papel› to play
    3 ( aparentar) to look;

    4 ( simbolizar) to represent, symbolize
    5 ( reproducir) [dibujo/fotografía/escena] to show, depict;
    [obra/novela] to portray, depict
    6 (equivaler a, significar) to represent;
    ◊ esto representa un aumento del 5% this represents a 5% increase;

    eso representaría tres días de trabajo that would mean o involve three days' work
    representar verbo transitivo
    1 (un símbolo) to symbolize, represent: la paloma representa la paz, the dove stands for peace
    2 (un cuadro, fotografía, ilustración) to depict: el cuadro representa una escena de caza, the painting depicts a hunting scene
    3 (un ejemplo o modelo) to represent
    4 (a una persona, un país, una institución) to represent
    5 (una edad) to look: no representa la edad que tiene, she doesn't look her age
    6 (en la imaginación) to imagine
    7 (en valor, importancia) to mean, represent: su ascenso representó una gran alegría, I/he/she, etc. was overjoyed by his promotion
    ese chico no representa nada para mí, that guy means nothing to me
    8 Teat (una obra) to perform
    (un papel) to play: mi amigo representa al emperador Augusto, my friend plays Emperor Augustus
    ' representar' also found in these entries:
    Spanish:
    aparentar
    - constituir
    - hacer
    - jugar
    - vida
    - significar
    English:
    act
    - act out
    - depict
    - deputize
    - do
    - enact
    - nation
    - perform
    - picture
    - play
    - portray
    - represent
    - role-play
    - speak for
    - stage
    - stand for
    - pose
    * * *
    1. [simbolizar, ejemplificar] to represent;
    este cuadro representa la Última Cena this painting depicts the Last Supper;
    la coma representa los decimales the comma indicates decimal places;
    Dalí representa perfectamente el surrealismo Dali is the ultimate surrealist painter
    2. [actuar en nombre de] to represent;
    el delegado sindical representaba a sus compañeros the shop steward represented his fellow workers;
    ha participado en dos festivales representando a su país she has represented her country at two festivals;
    representa a varios artistas she acts as an agent for several artists
    3. [aparentar] to look;
    representa unos cuarenta años she looks about forty;
    representa muchos menos años de los que tiene she looks a lot younger than she is
    4. [significar] to mean;
    representa el 50 por ciento del consumo interno it accounts for 50 percent of domestic consumption;
    diez millones no representan nada para él ten million is nothing to him;
    representa mucho para él it means a lot to him
    5. Teatro [función] to perform;
    [papel] to play
    6. Com to represent
    * * *
    v/t
    1 ( simbolizar) represent
    2 obra put on, perform; papel play
    :
    * * *
    1) : to represent, to act for
    2) : to perform
    3) : to look, to appear as
    4) : to symbolize, to stand for
    5) : to signify, to mean
    * * *
    1. (un papel) to play
    2. (una obra) to perform
    la compañía representará "Yerma" the company will perform "Yerma"
    3. (simbolizar) to represent
    5. (aparentar) to look

    Spanish-English dictionary > representar

  • 44 Graviernachformmaschine

    f <wz.masch> ■ engraving-type form duplicating machine

    German-english technical dictionary > Graviernachformmaschine

  • 45 доска

    ( шириной до 10 см и толщиной до 5 см) board англ., plank англ.; амер.
    * * *
    доска́ ж.
    1. ( деревянная) board, plank; strake
    калева́ть до́ску́ — mould a board, run a board through a moulder
    обраба́тывать до́ску́ на станке́ — run a board through a machine
    обраба́тывать до́ску́ по пове́рхности — surface a board, dress a board in a planer
    строга́ть до́ску́ — run [dress] a board through [in] a planer
    строга́ть до́ску́ на фальц — shiplap a board
    2. маш. board, plate
    бокова́я доска́ лес. — outer plank
    ваго́нные до́ски — wagon stock
    винтова́льная доска́ — screw plate
    волочи́льная доска́ — die, die [drawing] plate
    ги́псовая арми́рованная доска́ — gypsum-steel plank
    доска́ гита́ры — change gear bracket
    гравирова́льная доска́ — copper [steel] plate
    гри́фельная доска́ — slate
    грудна́я доска́ с.-х. — breast board
    дели́тельная доска́ с.-х. — dividing board
    до́ски для вну́тренней обши́вки — linings
    доска́ для вре́зки замка́ — lock block
    доска́ для шагрени́рования ко́жи — cork board
    доска́ забо́ра, цо́кольная — gravel plank
    заспи́нная доска́ ( лодки) — backboard
    кали́берная доска́ — wire gauge, wire gauge plate
    ключева́я доска́ тлф. — keyboard
    коммутацио́нная доска́
    1. plugboard, patchboard
    2. ( для набора программ) problem board; programming pinboard
    конько́вая доска́ — ridge pole
    доска́ кре́пи, забивна́я — forepole
    кружа́льная доска́ — curve piece
    ма́лочная доска́ мор. — bevel board
    моде́льная доска́ — matchboard
    мра́морная доска́ — marble slab
    набивны́е до́ски — print stamps, engraving plates
    набо́рная доска́ полигр. — letter board, galley
    нажимна́я доска́ ( резцедержателя) — clamp plate
    нака́тная доска́ кож. — board
    накладна́я доска́ полигр. — feed [laying-on] board
    доска́ на ребро́ стр. — cant board
    доска́ насти́ла — flooring board
    необрезна́я доска́ — unedged board
    нестро́ганая доска́ — rough board
    обрезна́я доска́ — edged board
    обши́вочная доска́ — doubling plank
    отводна́я доска́ с.-х. — swathboard, grass board
    отража́тельная доска́ ( громкоговорителя) — baffle
    подмоде́льная доска́ литейн. — stamping board
    подно́жная доска́ с.-х. — foot board
    полева́я доска́ — ( косилки) swathboard, grass board; ( плуга) landside
    полова́я доска́ — flooring board
    полуобрезна́я доска́ — outer plank
    поса́дочная доска́ с.-х. — planting board
    посевна́я доска́ — seeding board
    потоло́чная доска́ — ceiling board
    предохрани́тельная доска́ — guard board
    прибо́рная доска́ — instrument board
    прокла́дочная доска́ — spacing board
    про́фильные до́ски — patterned lumber
    до́ски разжело́бка — valley boards
    разме́точная доска́ полигр. — lay-out board
    распо́рная доска́ ( щековой дробилки) — toggle
    распредели́тельная доска́ с.-х. — scattering board
    сердцо́вая доска́ лес. — heart plank
    доска́ с калё́вкой — moulded board
    ска́тная доска́ с.-х. — grain [slide] board, grain chute
    сливна́я доска́ — fascia board
    сливна́я, подоко́нная доска́ — slip sill
    доска́ с ма́трицами — die plate
    спуска́льная доска́ полигр. — galley
    ста́пельная доска́ полигр. — stockpile board, pile board
    столя́рная доска́ — joiner's board, joiner's deal
    стро́ганые до́ски — surfaced lumber
    стрясна́я доска́ с.-х. — shuttle [shaking] board, shake(r) pan
    счё́тная доска́ — calculating board; abac(us)
    транспорти́рующая доска́ с.-х. — delivery board
    тра́нцевая доска́ ( лодки) — transom board
    трепа́льная доска́ с.-х. — scutching board
    тру́бная доска́ ( котла) — tube plate, tube sheet
    тру́бная, пла́вающая доска́ — floating tube plate
    тру́бная, подвижна́я доска́ — rotating tube plate
    у́зкая доска́ — strip board
    улю́чная доска́ с.-х. — mote board
    фасо́нная доска́ — moulded board
    фаце́тная доска́ — patent base, patent block
    фри́зовая доска́ — frame board
    центра́льная доска́ лес. — centre plank
    чертё́жная доска́ — drawing board
    чистообрезна́я доска́ — square board, edge shot
    шпунто́ванная доска́ — matched board

    Русско-английский политехнический словарь > доска

  • 46 Ramsden, Jesse

    [br]
    b. 6 October 1735 (?) Halifax, Yorkshire, England
    d. 5 November 1800 Brighton, Sussex, England
    [br]
    English instrument-maker who developed machines for accurately measuring angular and linear scales.
    [br]
    Jesse Ramsden was the son of an innkeeper but received a good general education: after attending the free school at Halifax, he was sent at the age of 12 to his uncle for further study, particularly in mathematics. At the age of 16 he was apprenticed to a cloth-worker in Halifax and on completion of the apprenticeship in 1755 he moved to London to work as a clerk in a cloth warehouse. In 1758 he became an apprentice in the workshop of a London mathematical instrument-maker named Burton. He quickly gained the skill, particularly in engraving, and by 1762 he was able to set up on his own account. He married in 1765 or 1766 the youngest daughter of the optician John Dollond FRS (1706– 61) and received a share of Dollond's patent for making achromatic lenses.
    Ramsden's experience and reputation increased rapidly and he was generally regarded as the leading instrument-maker of his time. He opened a shop in the Haymarket and transferred to Piccadilly in 1775. His staff increased to about sixty workers and apprentices, and by 1789 he had constructed nearly 1,000 sextants as well as theodolites, micrometers, balances, barometers, quadrants and other instruments.
    One of Ramsden's most important contributions to precision measurement was his development of machines for obtaining accurate division of angular and linear scales. For this work he received a premium from the Commissioners of the Board of Longitude, who published his descriptions of the machines. For the trigonometrical survey of Great Britain, initiated by General William Roy FRS (1726–90) and continued by the Board of Ordnance, Ramsden supplied a 3 ft (91 cm) theodolite and steel measuring chains, and was also engaged to check the glass tubes used to measure the fundamental base line.
    [br]
    Principal Honours and Distinctions
    FRS 1786; Royal Society Copley Medal 1795. Member, Imperial Academy of St Petersburg 1794. Member, Smeatonian Society of Civil Engineers 1793.
    Bibliography
    Instruments, London.
    1779, "Description of two new micrometers", Philosophical Transactions of the Royal Society 69:419–31.
    1782, "A new construction of eyeglasses for such telescopes as may be applied to mathematical instruments", Philosophical Transactions of the Royal Society 73:94–99.
    Further Reading
    R.S.Woodbury, 1961, History of the Lathe to 1850, Cleveland, Ohio; W.Steeds, 1969, A History of Machine Tools 1700–1910, Oxford (both provide a brief description of Ramsden's dividing machines).
    RTS

    Biographical history of technology > Ramsden, Jesse

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