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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.
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crown wheel
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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 — 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… … Universalium
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 …
