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windlass

 
Dictionary: wind·lass   (wĭnd'ləs) pronunciation
n.
Any of numerous hauling or lifting machines consisting essentially of a horizontal cylinder turned by a crank or a motor so that a line attached to the load is wound around the cylinder.

tr.v., -lassed, -lass·ing, -lass·es.
To raise with a windlass.

[Middle English wyndlas, alteration of windas, from Old Norse vindāss : vinda, to wind + āss, pole.]


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Architecture: windlass
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A modification of the wheel and axle used for lifting weights; usually an axle, turned by a crank, and a rope or chain wound around the axle for raising the weight.


WordNet: windlass
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Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: lifting device consisting of a horizontal cylinder turned by a crank on which a cable or rope winds
  Synonym: winch


Wikipedia: Windlass
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For the tool used to raise paddle gear on canal locks, see Windlass ("lock key")
Turnbridge Windlass Lift road bridge over Huddersfield Broad Canal
Differential windlass

A windlass is an apparatus for moving heavy weights. Typically, a windlass consists of a horizontal cylinder (barrel), which is rotated by the turn of a crank or belt. A winch is affixed to one or both ends, and a cable or rope is wound around the winch, pulling a weight attached to the opposite end.

Windlasses are sometimes used on boats to raise the anchor as an alternative to a vertical capstan (see anchor windlass).

Windlasses can also be used to raise water from a well. The oldest description of a well windlass, a rotating wooden rod installed across the mouth of a well, is found in Isidore of Seville's (c. 560–636) Origenes (XX, 15, 1-3).[1] In the Late Middle Ages European crossbows employed a windlass as a cocking mechanism.


Differential windlass

In a differential windlass, also called a Chinese windlass,[2][3][4] there are two coaxial drums of different diameters r and r'. The rope is wound onto one drum while it unwinds from the other, with a movable pulley hanging in the bight between the drums. Since each turn of the crank raises the pulley and attached weight by only 2π(r - r'), very large mechanical advantages can be obtained.

External links

References

  • Needham, Joseph. (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books, Ltd.

Notes

  1. ^ Oleson, John Peter (1984), Greek and Roman Mechanical Water-lifting Devices. The History of a Technology, Dordrecht: D. Reidel, pp. 56f., ISBN 90-277-1693-5 
  2. ^ "Chinese". Oxford English Dictionary. Oxford University Press. 2nd ed. 1989.
  3. ^ Morris, Christopher, ed. (1992), Academic Press Dictionary of Science and Technology, Gulf Professional Publishing, p. 416, ISBN 9780122004001 
  4. ^ Knight, Edward H. (1884), The Practical Dictionary of Mechanics, Cassell Petter & Galpin  "Chinese-windlass, a differential windlass in which the cord winds off one part of the barrel and on to the other."

Translations: Windlass
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Dansk (Danish)
n. - brøndvinde, spil, ankerspil
v. tr. - hejse

Nederlands (Dutch)
lier

Français (French)
n. - (gén) treuil, (Naut) guindeau
v. tr. - hisser avec un treuil

Deutsch (German)
n. - Winde
v. - mit einer Winde ziehen

Ελληνική (Greek)
n. - (μηχαν.) βαρούλκο, εργατοκύλινδρος, γερανός
v. - υψώνω με βαρούλκο

Italiano (Italian)
argano, mettere in trazione

Português (Portuguese)
n. - molinete (m)
v. - guindar

Русский (Russian)
лебедка, ворот, брашпиль

Español (Spanish)
n. - torno, molinete
v. tr. - izar con el torno o molinete

Svenska (Swedish)
n. - vindspel, vinsch
v. - hissa upp

中文(简体)(Chinese (Simplified))
绞盘, 起锚机, 用绞盘吊起

中文(繁體)(Chinese (Traditional))
n. - 絞盤, 起錨機
v. tr. - 用絞盤吊起

한국어 (Korean)
n. - 자아틀, 윈치, 양묘기
v. tr. - 기계로 감아 올리다

日本語 (Japanese)
n. - 巻き上げ機

العربيه (Arabic)
‏(الاسم) مرفاع, مرفاع المرساة (فعل) يرفع بمرفع‏

עברית (Hebrew)
n. - ‮כננת, מנוף‬
v. tr. - ‮משך בכננת‬


 
 

 

Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Windlass" Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more