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A chainlock, also known as a smiley, [1] is an improvised weapon which consists of a length of chain or strong cloth attached to a large lock or other piece of metal. The chainlock is mainly used in areas where other hand held weapons, such as knives, are not readily available. The chainlock is used by swinging the heavy end of the chain at
Door chain. A door chain, security chain, or security door chain or chain door interviewer [1] consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door. [2] They are commonly used on hotel and motel ...
A chain trencher cuts with a digging chain or belt that is driven around a rounded metal frame, or boom. It resembles a giant chainsaw. This type of trencher can cut ground that is too hard to cut with a bucket-type excavator, and can also cut narrow and deep trenches. The angle of the boom can be adjusted to control the depth of the cut.
A friction hitch tied around a thicker rope that can slide while unloaded, but locks when loaded. [2] [3] Similar to the Prusik. Michoacan/Martin is a full equivalent to Gripping sailor's hitch: Pile hitch: The pile hitch is easier to tie than the icicle hitch, and can be tied in the bight without access to either end of the rope. Prusik or Prussik
It's also the most common belay system which locks with the brake hand in line with the load, and as such is a more suitable method for direct belays than using a normal belay plate. [5] This can be useful when the anchor, carabiner and Munter hitch are above or behind the belayer whilst attention is paid to the loaded end of the rope.
A pipe hitch is a hitch-type knot used to secure smooth cylindrical objects, [2] such as pipes, poles, beams, or spars. According to The Ashley Book of Knots , a pipe hitch is "used to lower a pipe or hoist one" [ 1 ] and as "another method of tying to a rectangular timber."
In 1914 it introduced the Rex brand-name, which was first used on a chain-driven concrete mixer. It soon became a widely recognized trademark. In 1923, C.R. Messinger of Chain Belt Company served as President of the American Foundry Society for a one-year term. In 1941 it won the combined Army and Navy Award for Excellence in War Production. [4]
The buntline hitch is a knot used for attaching a rope to an object. It is formed by passing the working end around an object, then making a clove hitch around the rope's standing part and taking care that the turns of the clove hitch progress towards the object rather than away from it. Secure and easily tied, the buntline hitch will jam when ...