ratchet and pawl

ratchet and pawl
храповой механизм

English-Russian arms dictionary. 2013.

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  • Ratchet (device) — In mechanical engineering, a ratchet is a device that allows linear or rotary motion in only one direction, while preventing motion in the opposite direction. Ratchets are used in many other mechanisms, including clocks, capstans, turnstiles,… …   Wikipedia

  • ratchet coupling — noun : a shaft coupling having a ratchet and pawl or a similar device whereby the driven member may be turned in one direction only by the driving member and may also overrun the driving member …   Useful english dictionary

  • Ratchet — Ratch et ( [e^]t), n. [Properly a diminutive from the same word as rack: cf. F. rochet. See 2d {Ratch}, {Rack} the instrument.] 1. A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc. [1913 Webster] 2. A mechanism… …   The Collaborative International Dictionary of English

  • Ratchet brace — Ratchet Ratch et ( [e^]t), n. [Properly a diminutive from the same word as rack: cf. F. rochet. See 2d {Ratch}, {Rack} the instrument.] 1. A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc. [1913 Webster] 2. A… …   The Collaborative International Dictionary of English

  • Ratchet drill — Ratchet Ratch et ( [e^]t), n. [Properly a diminutive from the same word as rack: cf. F. rochet. See 2d {Ratch}, {Rack} the instrument.] 1. A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc. [1913 Webster] 2. A… …   The Collaborative International Dictionary of English

  • Ratchet wheel — Ratchet Ratch et ( [e^]t), n. [Properly a diminutive from the same word as rack: cf. F. rochet. See 2d {Ratch}, {Rack} the instrument.] 1. A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc. [1913 Webster] 2. A… …   The Collaborative International Dictionary of English

  • ratchet — [rach′it] n. [earlier rochet < Fr, lance head, distaff < It rocchetto, bobbin, spindle, dim. of rocca, distaff < Goth * rukka, akin to OHG roccho, spindle, distaff < IE base * ruk(k) , spun yarn] 1. a toothed wheel (in full ratchet… …   English World dictionary

  • ratchet drill — noun : a hand drill in which the drill holder is revolved intermittently by a lever through a ratchet wheel and pawl * * * ratchet drill, a drill rotated by a ratchet wheel moved by a pawl and lever …   Useful english dictionary

  • ratchet — 1. noun /ˈrætʃɪt/ a) A pawl, click or detent for holding or propelling a ratchet wheel, or ratch, etc. b) A mechanism composed of a ratchet wheel, or ratch and pawl. 2. verb …   Wiktionary

  • ratchet crank — noun : a crank mounted on but not keyed to a shaft which it moves intermittently through a ratchet wheel and pawl …   Useful english dictionary

  • Brownian ratchet — The Brownian ratchet is a thought experiment about an apparent perpetual motion machine conceived by Richard Feynmancite book last = Feynman first = Richard P. authorlink = coauthors = title = The Feynman Lectures on Physics, Vol. 1 publisher =… …   Wikipedia


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