Machine screw

Machine screw
Machine Ma*chine" (m[.a]*sh[=e]n"), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by means of which force and motion may be transmitted and modified, as a screw and its nut, or a lever arranged to turn about a fulcrum or a pulley about its pivot, etc.; especially, a construction, more or less complex, consisting of a combination of moving parts, or simple mechanical elements, as wheels, levers, cams, etc., with their supports and connecting framework, calculated to constitute a prime mover, or to receive force and motion from a prime mover or from another machine, and transmit, modify, and apply them to the production of some desired mechanical effect or work, as weaving by a loom, or the excitation of electricity by an electrical machine. [1913 Webster]

Note: The term machine is most commonly applied to such pieces of mechanism as are used in the industrial arts, for mechanically shaping, dressing, and combining materials for various purposes, as in the manufacture of cloth, etc. Where the effect is chemical, or other than mechanical, the contrivance is usually denominated an apparatus or device, not a machine; as, a bleaching apparatus. Many large, powerful, or specially important pieces of mechanism are called engines; as, a steam engine, fire engine, graduating engine, etc. Although there is no well-settled distinction between the terms engine and machine among practical men, there is a tendency to restrict the application of the former to contrivances in which the operating part is not distinct from the motor. [1913 Webster]

2. Any mechanical contrivance, as the wooden horse with which the Greeks entered Troy; a coach; a bicycle. --Dryden. --Southey. --Thackeray. [1913 Webster]

3. A person who acts mechanically or at the will of another. [1913 Webster]

4. A combination of persons acting together for a common purpose, with the agencies which they use; as, the social machine. [1913 Webster]

The whole machine of government ought not to bear upon the people with a weight so heavy and oppressive. --Landor. [1913 Webster]

5. A political organization arranged and controlled by one or more leaders for selfish, private or partisan ends; the Tammany machine. [Political Cant] [1913 Webster]

6. Supernatural agency in a poem, or a superhuman being introduced to perform some exploit. --Addison. [1913 Webster]

{Elementary machine}, a name sometimes given to one of the simple mechanical powers. See under {Mechanical}.

{Infernal machine}. See under {Infernal}.

{Machine gun}.See under {Gun.}

{Machine screw}, a screw or bolt adapted for screwing into metal, in distinction from one which is designed especially to be screwed into wood.

{Machine shop}, a workshop where machines are made, or where metal is shaped by cutting, filing, turning, etc.

{Machine tool}, a machine for cutting or shaping wood, metal, etc., by means of a tool; especially, a machine, as a lathe, planer, drilling machine, etc., designed for a more or less general use in a machine shop, in distinction from a machine for producing a special article as in manufacturing.

{Machine twist}, silken thread especially adapted for use in a sewing machine.

{Machine work}, work done by a machine, in contradistinction to that done by hand labor. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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Look at other dictionaries:

  • machine screw — n. A type of screw used either with a nut or with a tapped hole; it has a slotted head which can be driven by a screwdriver. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • machine screw — n. a small screw designed for fastening metal parts having tapped holes: see SCREW …   English World dictionary

  • machine screw — a threaded fastener, either used with a nut or driven into a tapped hole, usually having a diameter of about 1/4 in. (6.4 mm) or less and a slotted head for tightening by a screwdriver. Cf. cap screw, machine bolt. * * * …   Universalium

  • machine screw — noun a screw used either with a nut or with a tapped hole; slotted head can be driven by a screwdriver • Hypernyms: ↑screw …   Useful english dictionary

  • machine screw — noun A screw designed for metal or a similar material, usually with no point and a relatively fine thread, intended for prepared, threaded holes …   Wiktionary

  • machine screw — A screw with thread running the length of the shank and available with a variety of different heads …   Dictionary of automotive terms

  • machine screw — noun a fastening device similar to a bolt but having a socket in its head which allows it to be turned with a screwdriver …   English new terms dictionary

  • Machine — Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by means of… …   The Collaborative International Dictionary of English

  • Machine gun — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …   The Collaborative International Dictionary of English

  • Machine shop — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …   The Collaborative International Dictionary of English

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