Definition of Lever watch. Meaning of Lever watch. Synonyms of Lever watch

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Definition of Lever watch

Lever watch
Lever Le"ver (l[=e]"v[~e]r or l[e^]v"[~e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. Alleviate, Elevate, Leaven, Legerdemain, Levee, Levy, n.] 1. (Mech.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures. 2. (Mach.) (a) A bar, as a capstan bar, applied to a rotatory piece to turn it. (b) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it. Compound lever, a machine consisting of two or more levers acting upon each other. Lever escapement. See Escapement. Lever jack. See Jack, n., 5. Lever watch, a watch having a vibrating lever to connect the action of the escape wheel with that of the balance. Universal lever, a machine formed by a combination of a lever with the wheel and axle, in such a manner as to convert the reciprocating motion of the lever into a continued rectilinear motion of some body to which the power is applied.

Meaning of Lever watch from wikipedia

- watch design and industrialists came out with the automatic watch. Whereas a mechanically-wound watch must be wound with the pendant or a levered setting...
- virtually every mechanical watch, alarm clock and other portable timepiece has used the lever escapement. The advantages of the lever are, first, that it is...
- watches now known as pin lever watches. It was po****rized by German watchmaker Georges Frederic Roskopf in its "proletarian watch" from 1867. It was invented...
- and Abraham-Louis Breguet. With this, a domestic watch could keep time to within a minute a day. Lever watches became common after about 1820, and this...
- about 1900, however, the lever was used in almost every watch made. In this escapement the escape wheel pushed on a T-shaped 'lever', which was unlocked as...
- 1765 by Pierre Le Roy and improved by Thomas Earnshaw (1749–1829). The lever escapement, the single most important technological breakthrough, though...
- The pallet fork is a component of the lever escapement of a mechanical watch. The pallet fork and the lever form one component that sits between the escape...
- Seiko introduced the Five Sport Speed Timer, the world's first Magic Lever watch with a vertical clutch and column wheel. It was a resounding success...
- escapements like the lever, and the high friction forces caused excessive wear and necessitated more frequent cleaning. The duplex watch escapement was invented...
- watchmaker and inventor, Geneva, lever escapement. Jacques-Frédéric Houriet (1743–1830), Swiss watchmaker, Le Locle, pocket watch, tourbillon. Jules Jürgensen...