-shaped links.]]
A is a series of connected Link s, 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 Dimension s.
- Those designed for transferring power in machines have links designed to mesh with the teeth of the Sprocket s of the machine, and are flexible in only one dimension. They are known as Roller Chain s.
Chains can also be decorative as Jewellery .
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
- 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
- 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
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