crown wheel

crown wheel
Horol.
1. a wheel next to the winding knob, having two sets of teeth, one at right angles to its plane.
2. any of various wheels having the form of a hoop or short cylinder with a serrated edge, as the escape wheel in a verge escapement.
[1640-50]

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Universalium. 2010.

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Look at other dictionaries:

  • Crown wheel — Crown Crown (kroun), n. [OE. corone, coroun, crune, croun, OF. corone, corune, F. couronne, fr. L. corona crown, wreath; akin to Gr. korw nh anything curved, crown; cf. also L. curvus curved, E. curve, curb, Gael. cruinn round, W. crwn. Cf.… …   The Collaborative International Dictionary of English

  • Crown wheel — (hw?l ). [Named from its resemblance to a crown.] (Mach.) A wheel with cogs or teeth set at right angles to its plane; called also a {contrate wheel} or {face wheel}. [1913 Webster] …   The Collaborative International Dictionary of English

  • crown-wheel — crownˈ wheel noun (horology) A wheel with teeth set at right angles to its plane • • • Main Entry: ↑crown …   Useful english dictionary

  • crown wheel — or crown gear n. a gearwheel with teeth set in the rim perpendicularly to its plane …   English World dictionary

  • crown wheel — noun : a crown gear of light construction: as a. : the crown shaped horizontal escape wheel of a verge escapement timepiece b. : a contrate wheel in the winding mechanism of a watch that drives the ratchet wheel and is itself driven by the… …   Useful english dictionary

  • crown wheel and pinion — A pair of gears in the final drive of a vehicle, always found in the back axle of a rear wheel drive layout where the pinion is on the end of the propeller shaft driving the crown wheel mounted on the differential at right angles to it, and also… …   Dictionary of automotive terms

  • crown wheel — noun In watchmaking, an object of circular shape with contrate teeth, which meshes with the winding pinion and with the ratchet wheel on the barrel arbor used to wind up the watch, respectively, to set the time …   Wiktionary

  • crown wheel — noun a gearwheel or cogwheel with teeth that project from the face of the wheel at right angles, used especially in the gears of motor vehicles …   English new terms dictionary

  • crown-wheel — n. Contrate wheel …   New dictionary of synonyms

  • crown wheel — /ˈkraʊn wil/ (say krown weel) noun 1. the larger of the two wheels in a bevel gear. 2. Horology a wheel next to the winding knob, having two sets of teeth, one at right angles to its plane …  

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