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CHAIN can refer to: See also Chain.


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A broad metal chain made of torus-shaped links.
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A metal chain with diamond shaped link pins.
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Roller chains.


A chain is a series of connected links, usually made of metal.

Chains are usually made in one of two styles, according to their intended use:
  • Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped, which makes the chain flexible in two dimensions.
  • Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension. They are known as Roller chains.
Chains can also be decorative as jewellery.

Uses for chain

Specific uses for chain include:
  • Bicycle chain, chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it
  • Chain drive, the main feature which differentiated the safety bicycle
  • Chain gun, type of machine gun that utilizes a chain, driven by an external power source, to actuate the mechanism rather than using recoil
  • Chain pumps, type of water pump where an endless chain has positioned on it circular discs
  • Chain-linked Lewis, lifting device made from two curved steel legs
  • Chainsaw, portable mechanical, motorized saw
  • Curb chain, used on curb bits when riding a horse
  • Door chain, a type of security chain on a door that makes it possible to open a door from the inside while still making it difficult for someone outside to force his or her way inside
  • Keychain, a small chain that connects a small item to a keyring
  • Lead shank (or "Stud chain"), used on difficult horses that are misbehaving
  • O-ring chain, a specialized type of roller chain
  • Roller chain, the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery
  • Snow chains, used to improve traction in snow
  • Timing chain, used to regulate the valve and ignition timing on an internal combustion engine
  • Ball and chain, phrase that can refer to either the actual restraint device that was used to slow down prisoners, or a derogatory description of a person's significant other
  • Bicycle lock (or "bicycle chain"), lockable chain
  • Leg iron chains (Fetters), an alternative to handcuffs
  • Chain link fencing, type of fencing that utilizes vertical wires that are bent in a zig zag fashion and linked to each other
  • Chain of office, collar or heavy gold chain worn as insignia of office or a mark of fealty in medieval Europe and the United Kingdom
  • Chain weapon, a medieval weapon made of one or more weights attached to a handle with a chain
  • Nunchaku, karate sticks linked by a chain
  • Omega chain, a pseudo-chain where the 'links' are mounted on a backing rather than being interlinked
  • Pull switch, an electrical switch operated by a chain
  • Flat chain, form of chain used chiefly in agricultural machinery
  • Decorating clothing, some people wear wallets with chains connected to their belts, or pants decorated with chains
  • Jewelry, many necklaces and bracelets are made out of small chains of gold and silver
  • Jack chain, a toothed chain used to move logs
  • Chains can also be used as a percussion instrument for special effects, such as in Schönberg's Gurre-Lieder and Janáček's From the House of the Dead
CHAIN was Datapoint's batch programming language, used in the late 1980s.
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The CECED Convergence Working Group has defined a new platform, called CHAIN (Ceced Home Appliances Interoperating Network), which defines a protocol for interconnecting different home appliances in a single multibrand system.
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In 1958, CECED was founded on the initiative of the Western-European National Associations. Since 1997 it has established a permanent office in Brussels to better represent the industry vis-á-vis the European Union institutions.
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A major appliance is usually defined as a large machine which accomplishes some routine housekeeping task, which includes purposes such as cooking, food preservation, or cleaning, whether in a household, institutional, commercial or industrial setting.
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The Macro Expansion Template Attribute Language complements TAL, providing macros which allow the reuse of code across template files. Both were created for Zope but are used in other Python projects as well.
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hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
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bicycle lock is a physical security device used on bicycles to prevent theft. They are generally used to fasten the bicycle to a bicycle rack or any immovable object.
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In geometry, a torus (pl. tori) is a surface of revolution generated by revolving a circle in three dimensional space about an axis coplanar with the circle, which does not touch the circle. Examples of tori include the surfaces of doughnuts and inner tubes.
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dimension (Latin, "measured out") is a parameter or measurement required to define the characteristics of an object—i.e., length, width, and height or size and shape.
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sprocket is a profiled wheel with metal teeth that meshes with a chain, track or other perforated or indented material. It is distinguished from a gear in that sprockets are never meshed together directly, and from a pulley by not usually having a flange at each side.
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Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery.
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Jewellery (also spelled jewelry, see spelling differences) is a personal ornament, such as a necklace, ring, or bracelet, made from jewels, precious metals or other substance.
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bicycle chain is a chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it.

The chain in use on modern bicycles is a roller chain with a 1/2" pitch. Chain comes in either 1/8", 3/32" or 3/16" widths.
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Chain drive is a way of transmitting mechanical power from one place to another. It is often used to convey power to the wheels of a vehicle, particularly bicycles and motorcycles. It is also used in a wide variety of machines besides vehicles.
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A chain gun is a type of machine gun or automatic cannon that uses an external source of power, rather than diverting energy from the cartridge, to cycle the weapon, and does so via a continuous loop of chain similar to that used on a motor or bicycle.
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The chain pump is a type of water pump where an endless chain has positioned on it a series of circular discs. One end of the chain dips in to the water, and the chain runs through a tube, slightly bigger than the diameter of the discs.
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A Lewis is a category of lifting devices used by Stonemasons to lift large stones into place with a crane, chain block or winch. It is inserted into a specially prepared hole or "seating" in the top of a stone, directly above its centre of mass.
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A chainsaw (or chain saw) is a portable mechanical, motorized saw. It is most commonly used in logging activities such as felling, delimbing, and bucking; by tree surgeons to fell trees and remove branches and foliage; to fell snags and assist in cutting firebreaks in
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A curb chain, or curb strap, is used on curb bits (including the pelham, kimberwicke, and Weymouth) when riding a horse. It is a linked chain or leather strap that runs under the chin groove of the horse from one cheekpiece to the other.
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A door chain, security chain, or security door chain is a chain on a door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door.
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keychain or key chain is a small chain, usually made from metal or plastic, that connects a small item to a keyring. The length of a keychain allows an item to be used more easily than if connected directly to a keyring.
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lead shank, shank, or stud chain is used on difficult horses that are misbehaving. It consists of a lead made of cotton, nylon, or leather, with a chain end. The chain end has a clip on the end, which is attached to the middle ring of the halter when a horse is
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The o-ring chain is a specialized type of roller chain used in the transmission of mechanical power from one sprocket to another.

Construction

The o-ring chain is named for the rubber o-rings built into the metal rollers of every link in this particular type of metal chain.
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Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery.
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Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on bicycles, motorcycles, and in industrial and agricultural machinery.
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Snow chains, or tire chains, are devices which are affixed to the wheels of vehicles to provide superior traction when driving through snow and ice. Snow chains are usually attached to the drive wheels of a vehicle (e.g.
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A timing belt, timing chain or cam belt is a part of an internal combustion engine that controls the timing of the engine's valves. Some engines use timing gears. The term "timing belt" is also used for the more general case of any flat belt with integral teeth.
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The internal combustion engine is an engine in which the combustion of fuel and an oxidizer (typically air) occurs in a confined space called a combustion chamber. This exothermic reaction creates gases at high temperature and pressure, which are permitted to expand.
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A ball and chain is a physical restraint device historically used on prisoners.

Ball and chain may also refer to:
  • a significant other, usually pejoratively
  • Flail (weapon), a medieval weapon with a spiked ball attached to a handle by a chain

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Significant other (sig ot ,sigot , sigoth, SigO, or SO) is a gender-blind, politically correct term to refer to a person's partner in an intimate relationship without disclosing or presuming anything about his or her marital status or sexual
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