Jack chain
Encyclopedia
A jack chain is a type of chain
made of thin wire
, with figure-eight-shaped links, and loops at right angle
s to each other. Jack chains are often used to suspend fixtures such as lights or signs, for decorative purposes, or as part of a cable lock
.
A jack chain can also be to a toothed chain for moving logs
.
A form of arm protection for the fifteenth century infantry soldier who, typically, was not dressed in plate armor but wore a padded arming jacket (“jack”) to protect his upper body was also known as a 'Jack chain'.
Chain
A chain is a sequence of connected links.Chain may also refer to:Chain may refer to:* Necklace - a jewelry which is worn around the neck* Mail , a type of armor made of interlocking chain links...
made of thin wire
Wire gauge
Wire gauge is a measurement of how large a wire is, either in diameter or cross sectional area. This determines the amount of electric current a wire can safely carry, as well as its electrical resistance and weight per unit of length...
, with figure-eight-shaped links, and loops at right angle
Right angle
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two halves of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles...
s to each other. Jack chains are often used to suspend fixtures such as lights or signs, for decorative purposes, or as part of a cable lock
Bicycle lock
A bicycle lock is a physical security device used on a bicycle to prevent theft. It is generally used to fasten the bicycle to a bicycle stand or other immovable object....
.
A jack chain can also be to a toothed chain for moving logs
Logging
Logging is the cutting, skidding, on-site processing, and loading of trees or logs onto trucks.In forestry, the term logging is sometimes used in a narrow sense concerning the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard...
.
A form of arm protection for the fifteenth century infantry soldier who, typically, was not dressed in plate armor but wore a padded arming jacket (“jack”) to protect his upper body was also known as a 'Jack chain'.
