machine+method

► verbo pronominal

1 (extraviarse - persona) to get lost; (- animal) to go missing

■ se me ha perdido un pendiente I've lost an earring

2 (confundirse) to get confused, get mixed up

■ en cuanto hablan de política me pierdo when they talk about politics I get lost

3 (desaparecer) to disappear, take off

■ en cuanto ve problemas, se pierde as soon as there's a problem, he disappears

4 (dejar escapar) to miss

■ ¡no te lo pierdas! don't miss it!

* * *

1) to get lost

2) miss

* * *

1) [persona] to get lost

2) [objeto]

3) [+ programa, fiesta] to miss

4) (=desaparecer) to disappear

5) (=desperdiciarse) to be wasted, go to waste

6) (=arruinarse) [persona] to lose one's way; [cosecha] to be ruined, get spoiled

7)

8) LAm (=prostituirse) to go on the streets

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(v.) = go astray, get + lost, lose + Posesivo + way, go + missing, miss out on, slip through + the cracks, get out of + Posesivo + depth, wander off + route, disorient, disorientate, wander off + track, lose + Posesivo + bearings

Ex. If you have a different answer check to see where you went astray.

Ex. Like Theseus in the Labyrinth we need to be able to follow well trodden pathways through hypermedia materials and re-track our journey along an imaginary thread when we get lost.

Ex. They had lost their way; most had completely lost sight of the founders' vision, and the few who could still see it had lost their faith in its potential for fulfillment.

Ex. This article describes the consequences of a burglary of a during which the desktop system, computer, image setter, and a FAX machine went missing.

Ex. The author regrets the struggle which Greco-Roman studies have to survive in the USA arguing that US students miss out on understanding the origins of much of their culture and government.

Ex. The author discusses the factors which have led to early adolescent services slipping through the cracks.

Ex. It sounds like it could be quite easy for you to get out of your depth with this problem.

Ex. If one with route knowledge wanders off the route, it would be very difficult for them to backtrack to the route of their own.

Ex. The author illustrates a method of organising the hypertext files so as to prevent the user from becoming disoriented in the system.

Ex. Being disorientated or lost is one of the fundamental difficulties which users experience when trying to navigate within hypertext systems.

Ex. You may find that it is easy to find ourself wandering off track, following something that really interests you, and ultimately not answering the question.

Ex. Around and around she went, becoming disoriented and losing her bearings, buffeted to and fro by the awesome power of Mother Nature.

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vpr

1. [extraviarse] to get lost;

me he perdido I'm lost;

se han perdido las tijeras the scissors have disappeared;

se me ha perdido el reloj I've lost my watch;

a mí no se me ha perdido nada por allí I've no desire to go there

2. [desaparecer] to disappear;

se perdió entre el gentío she disappeared amongst the crowd;

¡piérdete! get lost!

3. [distraerse, no seguir el hilo]

cuando empiezan a hablar de toros yo me pierdo when they start talking about bullfighting, I get completely lost;

uno se pierde entre tantas siglas de partidos políticos all these acronyms for the different political parties are so confusing;

explícamelo otra vez, que me he perdido explain it to me again, you lost me

4. [desaprovechar]

¡no te lo pierdas! don't miss it!;

me he perdido el principio I missed the beginning;

no te has perdido gran cosa you didn't miss much

5. [desperdiciarse] to be wasted

6. [por los vicios, las malas compañías] to be beyond salvation

7. [anhelar]

* * *

v/r get lost;

no se te ha perdido nada aquí fig there’s nothing here for you

* * *

vr

extraviarse: to get lost, to stray

* * *

perderse vb

1. (extraviarse) to get lost

2. (concierto, película, etc) to miss

1 to collect, to gather.

2 to compile (escritos, leyes).

* * *

► verbo transitivo

1 to compile, collect

* * *

* * *

1) (=reunir) to compile; (=resumir) to summarize

2) [+ leyes] to codify

* * *

verbo transitivo to compile, gather together

* * *

= capture, collect, compile.

Ex. The National Agricultural Text Digitizing Project (NATDP) is a cooperative effort by the National Agricultural Library and 42 university libraries to test a new method of capturing this literature in digital form for publication on CD-ROM.

Ex. Synonyms, related terms and other variants must now be collected, either by human selection, or with the aid of the machine.

Ex. This system could be used by the booktrade for compiling second-hand book lists.

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* no recopilado = uncollected.

* recopilar información = gather + information, collate + information.

* sin recopilar = uncollected.

* * *

verbo transitivo to compile, gather together

* * *

* * *

recopilar [A1 ]

to compile, collect together, gather together

* * *

* * *

recopilar vt

1. [recoger] to collect, to gather

2. [escritos, leyes] to compile

* * *

v/t compile

* * *

recopilar vt

: to compile, to collect

1 to use.

¿sabes usar esta máquina? do you know how to use this machine?

de usar y tirar disposable (producto)

sin usar unused

Antonio usa grapas Anthony uses staples.

El timador usó a las personas The swindler used the people.

2 to wear (ropa, lentes, maquillaje).

estos guantes están sin usar these gloves haven't been worn

Antonio usa corbata Anthony wears ties.

* * *

► verbo transitivo

1 to use

2 (prenda) to wear

► verbo intransitivo

1 to use (de, -)

■ usó de sus encantos para conseguir el trabajo he used his charm to get the job

► verbo pronominal usarse

1 (estar de moda) to be used, be in fashion

■ esta palabra ya no se usa this word is no longer used

\

de usar y tirar throwaway

sin usar brand-new

* * *

1) to use

2) wear

* * *

1. VT

1) (=utilizar) [+ aparato, transporte, sustancia, expresión] to use

2) (=llevar) [+ ropa, perfume] to wear

3) (=soler)

usarse

* * *

verbo transitivo

1)

a) (emplear, utilizar) to use

b) <instalaciones/servicio> to use

c) <producto/combustible> to use

2) ( llevar) <alhajas/ropa> to wear; < perfume> to use, wear

3) (esp AmL) < persona> to use

1) ver abusar 2)

2) usar de (frml) ( hacer uso de) <influencia/autoridad> to use

usarse v pron (en 3^a pers) (esp AmL) ( estar de moda) color/ropa to be in fashion

* * *

= adopt, call on/upon, deploy, employ, make + use of, rely on/upon, take, use, utilise [utilize, -USA], draw on/upon, use up, mobilise [mobilize, -USA].

Ex. The concept of corporate authorship was first formulated in the BM code and has been adopted in all subsequent English language codes.

Ex. It can only be a matter of time before we have in effect a complete set of MARC records to call on for details of any item we require.

Ex. The article presents the results of trials in which the model was deployed to classify aspects of the construction industry, such as construction norms and regulations.

Ex. The size of the collections in which the LCC is currently employed is likely to be a significant factor in its perpetuation.

Ex. The example search in figure 8.3 shows how the statements in an online search make use of Boolean logic operators.

Ex. When BNB began publication in 1950 it relied upon the fourteenth edition of DC.

Ex. A common standard serial interface is the RS232C which takes a 24-pin plug and is commonly used to connect many peripherals including printers and modems.

Ex. A study of bibliographic classification could concentrate solely upon the major, and some of the more minor bibliographic classification schemes used today.

Ex. Clearly both tools record controlled indexing languages, but they are utilised in different environments.

Ex. Bay's essay was produced to commemorate the 400th anniversary of Gesner's birth and draws upon a mass of contemporary source material.

Ex. Plug-in programs have grown widely, they add functionality to a WWW browser but also use up drive storage space or conflict with other types of programs.

Ex. It is time for all librarians to change their attitudes and become involved, to seek funds and mobilise civic organisations and businesses in cooperative efforts.

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* al usarse = in use.

* aparato para usar Internet = Internet appliance.

* capaz de usar el correo electrónico = e-mail literate.

* cuchillo de usar y tirar = disposable knife.

* de usar y tirar = disposable, throwaway, single-use.

* fácil de usar = easy-to-use, user friendly.

* hacer que no se use = render + unused.

* listo para usar = off-the-rack.

* listo para usarse = on tap.

* plato de usar y tirar = disposable plate.

* que puede ser usado a través de la web = web-compliant.

* seleccionar en pantalla usando el contraste de colores = highlight.

* servilleta de usar y tirar = disposable napkin.

* tenedor de usar y tirar = disposable fork.

* usando = by use of.

* usando el tiempo de un modo eficaz = time efficient [time-efficient].

* usar Algo bien = put to + good use.

* usar Algo con buen provecho = use + Nombre + to good advantage.

* usar Algo de un modo muy diluido = spread + Nombre + thinly.

* usar como gasto deducible = write off.

* usar como modelo = use + as a model.

* usar con mesura = eke out.

* usar con precaución = use + with caution.

* usar de forma general = widely applied.

* usar de manera general = be in general use.

* usar de un modo descuidado = bandy (about/around).

* usar de un modo despreocupado = bandy (about/around).

* usar eficazmente = tap.

* usar enchufes = pull + strings.

* usar en exceso = overuse.

* usar excesivamente = overuse.

* usar fuera de contexto = use + out of context.

* usar indistintamente = use + interchangeably.

* usar mal = abuse, misuse.

* usarse = be in use.

* usarse en = be at home in.

* usar sobre la zona afectada = use + topically.

* usar superficialmente = nibble at.

* úsese = Use.

* úsese en lugar de (UF) = UF (use for).

* volver a usar = reuse [re-use].

* * *

verbo transitivo

1)

a) (emplear, utilizar) to use

b) <instalaciones/servicio> to use

c) <producto/combustible> to use

2) ( llevar) <alhajas/ropa> to wear; < perfume> to use, wear

3) (esp AmL) < persona> to use

1) ver abusar 2)

2) usar de (frml) ( hacer uso de) <influencia/autoridad> to use

usarse v pron (en 3^a pers) (esp AmL) ( estar de moda) color/ropa to be in fashion

* * *

* * *

usar [A1 ]

1 (emplear, utilizar) to use

¿cómo se usa esta calculadora? how does this calculator work?

es una expresión poco usada it's not a very common expression, it's not an expression that's used a lot

usó mal esa palabra he didn't use the word correctly

usa preservativos use condoms

usó toda su diplomacia para convencerlos she used all her tact to convince them

usar algo/a algn DEor COMO algo to use sth/sb AS sth

no uses el plato de or como cenicero don't use the plate as an ashtray

¿te puedo usar de or como testigo? can I use you as a witness?

2 ‹instalaciones/servicio› to use

hay una excelente biblioteca pero nadie la usa there's an excellent library but nobody uses it o nobody makes use of it

3 (consumir) ‹producto/ingredientes/combustible› to use

¿qué champú usas? what shampoo do you use?

no uses todos los huevos don't use all the eggs (up)

B (llevar) ‹alhajas/ropa› to wear; ‹perfume› to use, wear

estos zapatos están sin usar these shoes are unworn, these shoes have never been worn

C ( esp AmL) (explotar, manipular) ‹persona› to use

me sentí usada I felt used

D usar de ( frml) (hacer uso de) ‹influencia/autoridad› to use

( en tercera persona)

( esp AmL) (estar de moda): el fucsia es el color que más se va a usar esta temporada fuchsia is set to be the most popular color o ( colloq) the in-color this season

cuando se usaba la maxifalda when long skirts were in fashion

se usan muchísimo las prendas de cuero leather clothing is very popular

ya no se usa hacer fiestas de compromiso it's not very common to have an engagement party nowadays

* * *

a) ( utilizar) to use;

◊ ¿qué champú usas? what shampoo do you use?;

b) ( llevar) ‹alhajas/ropa/perfume› to wear;

◊ estos zapatos están sin usar these shoes are unworn, these shoes have never been worn

◊ ya no se usa hacer fiestas de compromiso people don't tend to have engagement parties any more

* * *

♦ vt

1. [aparato, herramienta, término] to use;

¿sabes usar esta máquina? do you know how to use this machine?;

una cafetera sin usar an unused coffee pot;

un método muy usado en literatura a widely used method in literature;

usar algo como o [m5]de: un cobertizo pequeño que se usa como o [m5] de almacén a small shed which is used as a store;

de usar y tirar [producto] disposable

2. [ropa, lentes] to wear;

no uso maquillaje I don't wear make-up;

estos guantes están sin usar these gloves haven't been worn;

siempre uso la talla 40 I always wear size 40

3. Am [persona] to use;

cuídate de ella, suele usar a la gente que se deja watch out with her, she tends to use people if they let her

♦ vi

usar de to use, to make use of;

quien siempre usa de la verdad whoever abides by the truth

♦ See also the pronominal verb usarse

* * *

I v/t

1 use

2 ropa, gafas wear

II v/i

listo para usar ready to use

* * *

usar vt

1) emplear, utilizar: to use, to make use of

2) consumir: to consume, to use (up)

3) llevar: to wear

de usar y tirar : disposable

♦ See also the reflexive verb usarse

* * *

usar vb

1. (emplear) to use

2. (llevar) to wear [pt. wore; pp. worn]

SUBJECT AREA: Textiles

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The flax plant passes through many stages before its fibres are prepared for spinning. The woody pith surrounding the fibres is first softened by rotting or "retting", and is then removed by beating or "scutching". This leaves the fibres in a tight bunch, as they have grown to form the stem of the plant. Hackling or heckling, the next process, separates the fibres from each other. In hand processes this was done by pulling the fibres across a board of steel spikes, or sometimes a form of comb was pulled through them.

In 1795 Sellers and Standage patented a method of heckling in which the flax was pulled by hand through stationary vertical teeth, but much more significant was the patent of 1801 of A.Thompson of London. The length of the fibres in a bundle of flax will vary considerably, therefore the distance between the point where the fibres pass out to be combed and the point where they can be put through another roller or gripper must be greater than the longest fibres, requiring some method of support in between. Thompson used a pair of chain gills for this purpose. These consist of rows of teeth mounted on a continuous chain or belt which moves around while the fibres pass through the teeth in the vertical position. The longer fibres are pulled through the teeth by the drawing rollers at the front, while the shorter ones are held steady by the teeth and presented to the rollers later; thus the teeth both support the fibres and heckle them at the same time. Following this process the fibres can be drawn and spun.

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1) ( характер дій) way, method, manner, mode

2) тк. мн. способи, засоби means

3) грам. mood

4)

mode¹ [mɔd]

1. feminine noun

• la mode des années 60 Sixties' fashions

• c'est la dernière mode it's the latest fashion

• c'est passé de mode [vêtement] it's gone out of fashion ; [pratique] it's outdated

• c'est la mode des talons hauts high heels are in fashion

• rédactrice de mode fashion editor

► à la mode fashionable

• les jupes sont à la mode skirts are in fashion

• être habillé à la mode to be fashionably dressed

• très à la mode very fashionable

• mettre qch à la mode to make sth fashionable

• revenir à la mode to come back into fashion

2. invariable adjective

mode² [mɔd]

1. masculine noun

   a. ( = moyen) mode

• mode de transport mode of transport

• mode de paiement mode of payment

• mode de vie way of life

• mode de scrutin voting system

• mode texte text mode

• je ne comprends pas le mode de fonctionnement de cette organisation I don't understand how this organization works

• quel est le mode d'action de ce médicament ? how does this medicine work?

   b. (en grammaire) mood

• au mode subjonctif in the subjunctive mood

2. compounds

► mode d'emploi directions for use ; ( = document) instructions leaflet

* * *

nom masculin

1) ( façon) way, mode

2) Linguistique mood

3) Musique, Informatique, Philosophie mode

•

- mode d'emploi

1) (en matière d'habillement, d'idées) fashion

2) ( secteur d'activité) fashion industry

* * *

1. nf

1) (= tendance) fashion

2) (= industrie) fashion trade, fashion industry

2. nm

1) (= manière) mode

2) LINGUISTIQUE mood

3) INFORMATIQUE mode

4) MUSIQUE mode

* * *

mode

A nm

1 ( façon) way, mode; mode de pensée/vie way of thinking/life; mode de gouvernement mode of government; mode de transport mode of transport GB ou transportation US; mode de paiement method of payment; le mode de fonctionnement de qch the way sth operates; traiter le sujet sur le mode comique/poétique to treat the subject in a comic/poetic vein;

2 Ling mood;

3 Mus, Ordinat, Philos mode.

B nf

1 (en matière d'habillement, d'idées) fashion; c'est la mode it's the fashion; c'est une mode it's a trend; lancer une mode to start a trend; une mode passagère a fad; c'est passé de mode it's gone out of fashion; elle suit/ne suit pas la mode she follows/ignores fashion; s'habiller à la dernière mode to wear the latest fashions; la mode des cheveux longs/mini-jupes the fashion for long hair/mini-skirts; la mode est aux cheveux courts short hair is in fashion; c'était une mode it was fashionable; mode masculine/féminine men's/women's fashion; coupe/coloris mode fashionable cut/colour^GB; à la mode ( qui fait la mode) [vêtement, style] fashionable, in fashion; [thème, personnage] in fashion; ( qui suit la mode) [vêtement, personne] fashionable; [jeune] fashionable, trendy; ( populaire) [romancier] who is in vogue ( épith, après n); [chanteur] popular; c'est très à la mode d'être végétarien it's very fashionable to be a vegetarian; la mode est à la cuisine végétarienne vegetarian cooking is all the rage ou is in fashion;

2 ( secteur d'activité) fashion industry; travailler dans la mode to work in the fashion industry ou business; présentation de mode fashion show.

mode dialogué Ordinat conversational mode; mode d'emploi ( de machine) instructions (pl) ou directions (pl) for use; ( de plat cuisiné) cooking instructions (pl).

[mɔd] nom féminin

1. [vêtement]

2. [activité]

a. [généralement] the fashion industry ou business

b. [stylisme] fashion designing

3. [goût du jour] fashion

la mode des années 80 the style of the eighties

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[mɔd] adjectif invariable

[coloris, coupe] fashion (modificateur), fashionable

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à la mode locution adjectivale

[vêtement] fashionable, in fashion

[personne, sport] fashionable

[chanson] (currently) popular

ce n'est plus à la mode it's out of fashion

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à la mode locution adverbiale

à la mode de locution prépositionnelle

1. [suivant l'usage de] in the fashion of

2. (locution)

[mɔd] nom masculin

1. [méthode]

a. [méthode] mode ou method of

b. [manière personnelle] way of

a. [généralement] life style

b. SOCIOLOGIE pattern of living

2. LINGUISTIQUE mood, mode

3. INFORMATIQUE mode

4. MATHÉMATIQUES & MUSIQUE & PHILOSOPHIE mode

field-effect mode — полевой эффект

finite element method — метод конечных элементов

finite element machine — конечно-элементный автомат (множество МП, спроектированное как специализированная ЭВМ параллельного действия)

finite element method — метод конечных элементов

finite element method — метод конечных элементов ( при математическом анализе)

finite-element method — метод конечных элементов (при структурном анализе, расчётах в области строительной механики)

SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering

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Hugo Bilgram studied mechanical engineering at the Augsburg Maschinenbau Schule and graduated in 1865. He worked as a machinist and draughtsman for several firms in Germany before going to the United States in 1869.

In America he first worked for L.B.Flanders Company and Southwark Foundry \& Machine Company in Philadelphia, designing instruments and machines. In the 1870s he also assisted in an evening class in drawing at The Franklin Institute. He devised the Bilgram Valve Diagram for analysing the action of steam engine slide valves and he developed a method of drawing accurate outlines of gear teeth. This led him to design a machine for cutting the teeth of gear wheels, particularly bevel wheels, which he patented in 1884. He was in charge of the American branch of Brehmer Brothers Company from 1879 and in 1884 became the sole owner of the company, which was later incorporated as the Bilgram Machine Works. He was responsible for several other inventions and developments in gear manufacture.

Bilgram was a member of the Franklin Institute, the American Academy of Political and Social Science, the Philadelphia Technische Verein and the Philadelphia Engineer's Club, and was elected a member of the American Society of Mechanical Engineers in 1885. He was also an amateur botanist, keenly interested in microscopic work.

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SUBJECT AREA: Mining and extraction technology

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After Menzies conceived his idea of breaking off coal with machines in 1761, many inventors subsequently followed his proposals through into the practice of underground working. More than one century later, Garforth became one of the principal pioneers of machine-holing combined with the longwall method of working in order to reduce production costs and increase the yield of coal. Having been appointed agent to Pope \& Pearson's Collieries, West Yorkshire, in 1879, of which company he later became Managing Director and Chairman, he gathered a great deal of experience with different methods of cutting coal. The first disc machine was exhibited in London as early as 1851, and ten years later a pick machine was invented. In 1893 he introduced an improved type of deep undercutting machine, his "diamond" disc coal-cutter, driven by compressed air, which also became popular on the European continent.

Besides the considerable economic advantages it created, the use of machinery for mining coal increased the safety of working in hard and thin seams. The improvement of safety in mining technology was always his primary concern, and as a result of his inventions and his many publications he became the leading figure in the British coal mining industry at the beginning of the twentieth century; safety lamps still carry his name. In 1885 he invented a firedamp detector, and following a severe explosion in 1886 he concentrated on coal-dust experiments. From the information he obtained of the effect of stone-dust on a coal-dust explosion he proposed the stone-dust remedy to prevent explosions of coal-dust. As a result of discussions which lasted for decades and after he had been entrusted with the job of conducting the British coal-dust experiments, in 1921 an Act made it compulsory in all mines which were not naturally wet throughout to treat all roads with incombustible dust so as to ensure that the dust always consisted of a mixture containing not more than 50 per cent combustible matter. In 1901 Garforth erected a surface gallery which represented the damaged roadways of a mine and could be filled with noxious fumes to test self-contained breathing apparata. This gallery formed the model from which all the rescue-stations existing nowadays have been developed.

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SUBJECT AREA: Textiles

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Townsend, who described himself in his first patent as a framework knitter and afterwards as a hosier of Leicester, took out a patent in 1847 for the application of a "machine like that of a point net frame to an ordinary stocking-frame". He described needles and hooks of a peculiar shape which were able to take the work off the knitting machine, reverse the loops and return them again so that ribbed knitting could be made on circular machines. These became popular for knitting stockings which, although not fully fashioned, had sufficient strength to fit the leg. In 1854 he took out a patent for making round hose with heels and toes fashioned on other machines. In yet another patent, in 1856, he described a method of raising looped pile on knitted fabrics for making "terry" towelling fabrics. He could use different coloured yarns in the fabric that were controlled by a Jacquard mechanism. It was in the same year, 1856, in a further patent that he described his tumbler or latch needles as well as the making of figured patterns in knitting on both sides of the fabric with a Jacquard mechanism. The latch needles were self-acting, being made to move up and down or backwards and forwards by the action of cams set in the cylindrical body of the machine. Normally the needle worked in a vertical or inclined position with the previous loop on the shank below the latch. Weft yarn was placed in the hook of the needle. The needle was drawn down between fixed plates which formed a new loop with the weft. At the same time, the original loop already on the shank of the needle moved along the shank and closed the latch so that it could pass over the newly formed loop in the needle hook and fall over the end of the needle incorporating the new loop on its way to make the next row of stitches. The latch needle obviated the need for loop wheels and pressers and thus simplified the knitting mechanism. Townsend's invention was the forerunner of an entirely new generation of knitting machines, but it was many years before its full potential was realized, the bearded needle of William Lee being preferred because the hinge of the latch could not be made as fine as the bearded needle.

Townsend was in the first rank of skilful manufacturers of fancy Leicester hosiery and had a good practical knowledge of the machinery used in his trade. Having patented his needles, he seems not to have succeeded in getting them into very profitable or extensive use, possibly because he fixed the royalty too high. His invention proved to be most useful and profitable in the hands of others, for it gave great impetus to the trade in seamless hose. For various reasons he discontinued his business in Leicester. He emigrated to the USA, where, after some initial setbacks, he began to reap the rewards of his skill.

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SUBJECT AREA: Horology, Ports and shipping

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John Harrison was the son of a carpenter and was brought up to that trade. He was largely self-taught and learned mechanics from a copy of Nicholas Saunderson's lectures that had been lent to him. With the assistance of his younger brother, James, he built a series of unconventional clocks, mainly of wood. He was always concerned to reduce friction, without using oil, and this influenced the design of his "grasshopper" escapement. He also invented the "gridiron" compensation pendulum, which depended on the differential expansion of brass and steel. The excellent performance of his regulator clocks, which incorporated these devices, convinced him that they could also be used in a sea dock to compete for the longitude prize. In 1714 the Government had offered a prize of £20,000 for a method of determining longitude at sea to within half a degree after a voyage to the West Indies. In theory the longitude could be found by carrying an accurate timepiece that would indicate the time at a known longitude, but the requirements of the Act were very exacting. The timepiece would have to have a cumulative error of no more than two minutes after a voyage lasting six weeks.

In 1730 Harrison went to London with his proposal for a sea clock, supported by examples of his grasshopper escapement and his gridiron pendulum. His proposal received sufficient encouragement and financial support, from George Graham and others, to enable him to return to Barrow and construct his first sea clock, which he completed five years later. This was a large and complicated machine that was made out of brass but retained the wooden wheelwork and the grasshopper escapement of the regulator clocks. The two balances were interlinked to counteract the rolling of the vessel and were controlled by helical springs operating in tension. It was the first timepiece with a balance to have temperature compensation. The effect of temperature change on the timekeeping of a balance is more pronounced than it is for a pendulum, as two effects are involved: the change in the size of the balance; and the change in the elasticity of the balance spring. Harrison compensated for both effects by using a gridiron arrangement to alter the tension in the springs. This timekeeper performed creditably when it was tested on a voyage to Lisbon, and the Board of Longitude agreed to finance improved models. Harrison's second timekeeper dispensed with the use of wood and had the added refinement of a remontoire, but even before it was tested he had embarked on a third machine. The balance of this machine was controlled by a spiral spring whose effective length was altered by a bimetallic strip to compensate for changes in temperature. In 1753 Harrison commissioned a London watchmaker, John Jefferys, to make a watch for his own personal use, with a similar form of temperature compensation and a modified verge escapement that was intended to compensate for the lack of isochronism of the balance spring. The time-keeping of this watch was surprisingly good and Harrison proceeded to build a larger and more sophisticated version, with a remontoire. This timekeeper was completed in 1759 and its performance was so remarkable that Harrison decided to enter it for the longitude prize in place of his third machine. It was tested on two voyages to the West Indies and on both occasions it met the requirements of the Act, but the Board of Longitude withheld half the prize money until they had proof that the timekeeper could be duplicated. Copies were made by Harrison and by Larcum Kendall, but the Board still continued to prevaricate and Harrison received the full amount of the prize in 1773 only after George III had intervened on his behalf.

Although Harrison had shown that it was possible to construct a timepiece of sufficient accuracy to determine longitude at sea, his solution was too complex and costly to be produced in quantity. It had, for example, taken Larcum Kendall two years to produce his copy of Harrison's fourth timekeeper, but Harrison had overcome the psychological barrier and opened the door for others to produce chronometers in quantity at an affordable price. This was achieved before the end of the century by Arnold and Earnshaw, but they used an entirely different design that owed more to Le Roy than it did to Harrison and which only retained Harrison's maintaining power.

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See also: Burgi, Jost; Huygens, Christiaan

SUBJECT AREA: Textiles

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Jacquard was apprenticed at the age of 12 to bookbinding, and later to type-founding and cutlery. His parents, who had some connection with weaving, left him a small property upon their death. He made some experiments with pattern weaving, but lost all his inheritance; after marrying, he returned to type-founding and cutlery. In 1790 he formed the idea for his machine, but it was forgotten amidst the excitement of the French Revolution, in which he fought for the Revolutionists at the defence of Lyons. The machine he completed in 1801 combined earlier inventions and was for weaving net. He was sent to Paris to demonstrate it at the National Exposition and received a bronze medal. In 1804 Napoleon granted him a patent, a pension of 1,500 francs and a premium on each machine sold. This enabled him to study and work at the Conservatoire des Arts et Métiers to perfect his mechanism for pattern weaving. A method of selecting any combination of leashes at each shoot of the weft had to be developed, and Jacquard's mechanism was the outcome of various previous inventions. By taking the cards invented by Falcon in 1728 that were punched with holes like the paper of Bouchon in 1725, to select the needles for each pick, and by placing the apparatus above the loom where Vaucanson had put his mechanism, Jacquard combined the best features of earlier inventions. He was not entirely successful because his invention failed in the way it pressed the card against the needles; later modifications by Breton in 1815 and Skola in 1819 were needed before it functioned reliably. However, the advantage of Jacquard's machine was that each pick could be selected much more quickly than on the earlier draw looms, which meant that John Kay's flying shuttle could be introduced on fine pattern looms because the weaver no longer had to wait for the drawboy to sort out the leashes for the next pick. Robert Kay's drop box could also be used with different coloured wefts. The drawboy could be dispensed with because the foot-pedal operating the Jacquard mechanism could be worked by the weaver. Patterns could be changed quickly by replacing one set of cards with another, but the scope of the pattern was more limited than with the draw loom. Some machines that were brought into use aroused bitter hostility. Jacquard suffered physical violence, barely escaping with his life, and his machines were burnt by weavers at Lyons. However, by 1812 his mechanism began to be generally accepted and had been applied to 11,000 draw-looms in France. In 1819 Jacquard received a gold medal and a Cross of Honour for his invention. His machines reached England c.1816 and still remain the basic way of weaving complicated patterns.

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SUBJECT AREA: Architecture and building, Paper and printing

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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.

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SUBJECT AREA: Domestic appliances and interiors

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Budding was an engineer who described himself as a mechanic on his first patent papers and as a manager in later applications.

A rotary machine had been developed at Brimscombe Mill in Stroud for cutting the pile on certain clothes and Budding saw the potential of this principle for a machine for cutting grass on lawns. It is not clear whether Budding worked for the Lewis family, who owned the mill, or whether he saw the machines during their manufacture at the Phoenix Foundry. At the age of 35 Budding entered into partnership with John Ferrabee, who had taken out a lease on Thrupp Mill. They reached an agreement in which Ferrabee would pay to obtain letter patent on the mower and would cover all the development costs, after which they would have an equal share in the profits. The agreement also allowed Ferrabee to license the manufacture of the machine and in 1832 he negotiated with the agricultural manufacturer Ransomes, allowing them to manufacture the mower.

Budding invented a screw-shifting spanner at a time when he might have been working as a mechanic at Thrupp Mill. He later rented a workshop in which he produced Pepperbox pistols. In the late 1830s he moved to Dursley, where he became Manager for Mr G.Lister, who made clothing machinery. Together they patented an improved method of making cylinders for carding engines, but Budding required police protection from those who saw their jobs threatened by the device. He made no fortune from his inventions and died at the age of 50.

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SUBJECT AREA: Metallurgy

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After graduating in chemistry from the Ecole Polytechnique in 1887, Charpy continued to work there on the physical chemistry of solutions for his doctorate. He joined the Laboratoire d'Artillerie de la Marine in 1892 and began to study the structure and mechanical properties of various steels in relation to their previous heat treatment. His first memoir, on the mechanical properties of steels quenched from various temperatures, was published in 1892 on the advice of Henri Le Chatelier. He joined the Compagnie de Chatillon Commentry Fourchamboult et Decazeville at their steelworks in Imphy in 1898, shortly after the discovery of Invar by G.E. Guillaume. Most of the alloys required for this investigation had been prepared at Imphy, and their laboratories were therefore well equipped with sensitive and refined dilatometric facilities. Charpy and his colleague L.Grenet utilized this technique in many of their earlier investigations, which were largely concerned with the transformation points of steel. He began to study the magnetic characteristics of silicon steels in 1902, shortly after their use as transformer laminations had first been proposed by Hadfield and his colleagues in 1900. Charpy was the first to show that the magnetic hysteresis of these alloys decreased rapidly as their grain size increased.

The first details of Charpy's pendulum impact testing machine were published in 1901, about two years before Izod read his paper to the British Association. As with Izod's machine, the energy of fracture was measured by the retardation of the pendulum. Charpy's test pieces, however, unlike those of Izod, were in the form of centrally notched beams, freely supported at each end against rigid anvils. This arrangement, it was believed, transmitted less energy to the frame of the machine and allowed the energy of fracture to be more accurately measured. In practice, however, the blow of the pendulum in the Charpy test caused visible distortion in the specimen as a whole. Both tests were still widely used in the 1990s.

In 1920 Charpy left Imphy to become Director-General of the Compagnie des Aciéries de la Marine et Homecourt. After his election to the Académie des Sciences in 1918, he came to be associated with Floris Osmond and Henri Le Chatelier as one of the founders of the "French School of Physical Metallurgy". Around the turn of the century he had contributed much to the development of the metallurgical microscope and had helped to introduce the Chatelier thermocouple into the laboratory and to industry. He also popularized the use of platinum-wound resistance furnaces for laboratory purposes. After 1920 his industrial responsibilities increased greatly, although he continued to devote much of his time to teaching at the Ecole Supérieure des Mines in Paris, and at the Ecole Polytechnique. His first book, Leçons de Chimie (1892, Paris), was written at the beginning of his career, in association with H.Gautier. His last, Notions élémentaires de sidérurgie (1946, Paris), with P.Pingault as co-author, was published posthumously.

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SUBJECT AREA: Textiles

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The condenser method of spinning was developed chiefly by manufacturers and machine makers in eastern Massachusetts between 1824 and 1826. John Goulding, a machinist from Dedham in Massachusetts, combined the ring doffer, patented by Ezekiel Hale in 1825, and the revolving twist tube, patented by George Danforth in 1824; with the addition of twisting keys in the tubes, the carded woollen sliver could be divided and then completely and continuously twisted. He divided the carded web longitudinally with the ring doffer and twisted these strips to consolidate them into slubbings. The dividing was carried out by covering the periphery of the doffer cylinder with separate rings of card clothing and spacing these rings apart by rings of leather, so that instead of width-way detached strips leaving the card, the strips were continuous and did not require piecing. The strips were passed through rotating tubes and wound on bobbins, and although the twist was false it sufficed to compress the fibres together ready for spinning. Goulding patented his invention in both Britain and the USA in 1826, but while his condensers were very successful and within twenty years had been adopted by a high proportion of woollen mills in America, they were not adopted in Britain until much later. Goulding also worked on other improvements to woollen machinery: he developed friction drums, on which the spools of roving from the condenser cards were placed to help transform the woollen jenny into the woollen mule or jack.

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SUBJECT AREA: Textiles

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John Kay was the youngest of five sons of a yeoman farmer of Walmersley, near Bury, Lancashire, who died before his birth. John was apprenticed to a reedmaker, and just before he was 21 he married a daughter of John Hall of Bury and carried on his trade in that town until 1733. It is possible that his first patent, taken out in 1730, was connected with this business because it was for an engine that made mohair thread for tailors and twisted and dressed thread; such thread could have been used to bind up the reeds used in looms. He also improved the reeds by making them from metal instead of cane strips so they lasted much longer and could be made to be much finer. His next patent in 1733, was a double one. One part of it was for a batting machine to remove dust from wool by beating it with sticks, but the patent is better known for its description of the flying shuttle. Kay placed boxes to receive the shuttle at either end of the reed or sley. Across the open top of these boxes was a metal rod along which a picking peg could slide and drive the shuttle out across the loom. The pegs at each end were connected by strings to a stick that was held in the right hand of the weaver and which jerked the shuttle out of the box. The shuttle had wheels to make it "fly" across the warp more easily, and ran on a shuttle race to support and guide it. Not only was weaving speeded up, but the weaver could produce broader cloth without any aid from a second person. This invention was later adapted for the power loom. Kay moved to Colchester and entered into partnership with a baymaker named Solomon Smith and a year later was joined by William Carter of Ballingdon, Essex. His shuttle was received with considerable hostility in both Lancashire and Essex, but it was probably more his charge of 15 shillings a year for its use that roused the antagonism. From 1737 he was much involved with lawsuits to try and protect his patent, particularly the part that specified the method of winding the thread onto a fixed bobbin in the shuttle. In 1738 Kay patented a windmill for working pumps and an improved chain pump, but neither of these seems to have been successful. In 1745, with Joseph Stell of Keighley, he patented a narrow fabric loom that could be worked by power; this type may have been employed by Gartside in Manchester soon afterwards. It was probably through failure to protect his patent rights that Kay moved to France, where he arrived penniless in 1747. He went to the Dutch firm of Daniel Scalongne, woollen manufacturers, in Abbeville. The company helped him to apply for a French patent for his shuttle, but Kay wanted the exorbitant sum of £10,000. There was much discussion and eventually Kay set up a workshop in Paris, where he received a pension of 2,500 livres. However, he was to face the same problems as in England with weavers copying his shuttle without permission. In 1754 he produced two machines for making card clothing: one pierced holes in the leather, while the other cut and sharpened the wires. These were later improved by his son, Robert Kay. Kay returned to England briefly, but was back in France in 1758. He was involved with machines to card both cotton and wool and tried again to obtain support from the French Government. He was still involved with developing textile machines in 1779, when he was 75, but he must have died soon afterwards. As an inventor Kay was a genius of the first rank, but he was vain, obstinate and suspicious and was destitute of business qualities.

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. в качестве варианта; видоизменение; разновидность; способ

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A variation of the previous electrode is one in which...

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