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.

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

crank

[kraŋk]
(mechanical engineering)
A link in a mechanical linkage or mechanism that can turn about a center of rotation.

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

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.

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

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."
References in periodicals archive ?
On the thousandth turn of the crank handle the machine went "pukch pukch," thought it over for a second, and then belched a pitch-black cloud of fumes, soot, and sparks, and settled into an even, monotonous "pukch pukch pukch pukch.
2 automation specifically 1 piece - 6 axle robot 1 piece - crank handle on robot~~s hand 1 piece - bearing magazine 1 piece - conveyor 1 piece - safety fencing and elements logic unit no.
I unhooked the crank handle, pushed in against the spring, engaged the pins on the crankshaft and pulled up.
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.
uk WAS: pounds 99, NOW: pounds 79 SAVE: pounds 20 The umbrella Green Canvas Parasol with Crank Handle and Steel Frame (2.
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.
Note that the original crank handle, NSN 5340-01-536-0999, fits over the gear shaft and is held in place with set screws.
Captain Peacock's apparatus features a crank handle, which operated a series of cogs and paddles in the water tank.
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.
The equipment is then locked into position, with adjustable turn and tilt, and lowered to the required height using a self-locking crank handle.