crank

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crank,

mechanical linkage consisting of a bar attached to a pivot at one of its ends in such a way that it is capable of rotating through a complete circle about the pivot. One of the principal uses of a crank is to turn reciprocating, or back and forth, motion into rotary motion or vice versa. A bell crank is one designed to change the direction of a linear motion.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Crank

 

the simplest rotating part of a crank mechanism. It has a cylindrical projection, the pin, whose axis is displaced relative to the axis of rotation of the crank by a distance r, which may be fixed or variable (see Figure 1).

Figure 1. Types of crank: (a) with constant radius r of pin displacement, (b) with r regulated by a slide, (c) with r regulated by a rotating disk

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

crank

[kraŋk]
(mechanical engineering)
A link in a mechanical linkage or mechanism that can turn about a center of rotation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Crank

In a mechanical linkage or mechanism, a link that can turn about a center of rotation. The crank's center of rotation is in the pivot, usually the axis of a crankshaft, that connects the crank to an adjacent link. A crank is arranged for complete rotation (360°) about its center; however, it may only oscillate or have intermittent motion. A bell crank is frequently used to change direction of motion in a linkage (see illustration). See Linkage (mechanism)

Cranks ( a ) for changing radius of rotation, and ( b ) for changing direction of translationenlarge picture
Cranks (a) for changing radius of rotation, and (b) for changing direction of translation
McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.

crank

crank
In a mechanical linkage or mechanism, a link that can turn about a center of rotation. The crank's center of rotation is in the pivot, usually the axis of the crankshaft, that connects the crank to the adjacent link. A crank is arranged for complete rotation (i.e., through 360°) about its center; however, it may only oscillate or have intermittent motion. A bell crank is frequently used to change the direction of the motion in a linkage.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

crank

1
1. a device for communicating motion or for converting reciprocating motion into rotary motion or vice versa. It consists of an arm projecting from a shaft, often with a second member attached to it parallel to the shaft
2. a handle incorporating a crank, used to start an engine or motor

crank

2, cranky
(of a sailing vessel) easily keeled over by the wind; tender
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

crank

(Automotive slang) Verb used to describe the performance of a machine, especially sustained performance. "This box cranks (or, cranks at) about 6 megaflops, with a burst mode of twice that on vectorised operations."
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
This fold away window handle has an out-of-the-way design that allows the crank handle to fold back flush with the window frame, eliminating protruding handles, which have been blamed for some hand and hip injuries.
Janek drew some fuel up with the pump, grasped the crank handle, and slowly, lethargically, ponderously, like a tortoise, the guts of the engine started to turn over.
Then the crank handle broke as the flames swept down the fuselage.
Built directly into the stock, the Versa Draw Cocking System connects to the TTFS through the cocking strap and employs a dual spool ratchet and ambidextrous crank handle that is held in place with a strong magnet.
The engine was started by a crank handle and more than 15 million models were produced between 1908 and 1927.
By means of the small crank handle, the pipe extends and contracts.
Price includes: A 2-year guarantee, easy-to-follow instructions, wall mounting kit and crank handle and is available in two lengths and two colour options: Forest Green/White stripes or, Navy Blue/White stripes.
woolworths.co.uk WAS: pounds 99, NOW: pounds 79 SAVE: pounds 20 The umbrella Green Canvas Parasol with Crank Handle and Steel Frame (2.7m), Robert Dyas WAS: pounds 39.99, NOW: pounds 19.99 SAVE: pounds 20 The BBQ Sahara Rapid Build Two Burner Gas BBQ, Argos WAS: pounds 119.99 NOW: pounds 59.99 SAVE: pounds 60 The patio set Blooma Coburg Table and Four Chairs, B&Q WAS: pounds 199, NOW: pounds 99 SAVE: pounds 100
The Knightsbridge awning from Eckman comes with easy-to-follow instructions, wall mounting kit and crank handle and it's available in three attractive new colour combinations: Forest Green, Poppy Red, or Navy Blue, all with White stripes.
Beside the clock was a telephone, but not a bit like the one at Beehive Stores with its wooden box on the wall, a crank handle to ring the telephone exchange at Pontybodkin, a mouthpiece fixed to the wall and a separate earpiece.
A big crank handle is fitted for strong winding power needed for repeated casts with a heavy rig.
For the crank handle you can bore a hole in a large dowel or even use a large corn cob.