In knot tying, a bight is a curved section or slack part between the two ends of a rope, string, or yarn. A knot that can be tied using only the bight of a rope, without access to the ends, is described as in the bight; the term "bight" is used in a more specific way when describing Turk's head knots, indicating how many repetitions of braiding are made in the circuit of a given knot. Sources differ on; the Ashley Book of Knots treats bights and loops as distinct, stating that a curve "no narrower than a semicircle" is a bight, while an open loop is a curve "narrower than a bight but with separated ends". However, The Illustrated Encyclopedia of Knots states: "Any section of line, bent into a U-shape is a bight." In order to make a slipped knot, a bight must be passed, rather than the end. This slipped form of the knot is more untied; the traditional bow knot used for tying shoelaces is a reef knot with the final overhand knot made with two bights instead of the ends. A slippery hitch is a slipped clove hitch.
The phrase in the bight means. This means that the knot can be formed without access to the ends of the rope; this can be an important property for knots to be used in situations where the ends of the rope are inaccessible, such as forming a fixed loop in the middle of a long climbing rope. Many knots tied with an end have a form, tied in the bight. In other cases, a knot being tied in the bight is a matter of the method of tying rather than a difference in the completed form of the knot. For example, the clove hitch can be made "in the bight" if it is being slipped over the end of a post but not if being cast onto a closed ring, which requires access to an end of the rope. Other knots, such as the overhand knot, cannot be tied in the bight without changing their final form. Ashley, Clifford W.. The Ashley Book of Knots. New York: Doubleday, 1944. ISBN 9780385040259. Budworth, Geoffrey; the Illustrated Encyclopedia of Knots. ISBN 9781585746262
A blood knot is most usefully employed for joining sections of monofilament nylon line while maintaining a high portion of the line's inherent strength. Other knots used for this purpose can cause a substantial loss of strength. In fly fishing, this serves to build a leader of decreasing diameter with the castable fly line attached at the large diameter end and the fly or hook at the small diameter end; the principal drawback to the blood knot is the dexterity required to tie it. It is likely to jam, not a concern in fishing line, no great loss to cut, but may be a concern in normal rope. "Blood knot" may refer to, "a double overhand knot tied in a cat-o'-nine-tails." The barrel knot, called blood knot by Keith Rollo, is the best bend there is for small, stiff or slippery line. The ends may be trimmed short and the knot offers the least resistance possible when drawn through water. A half blood knot is a knot, used for securing a fishing line to a fishing lure, snap or swivel; when two half blood knots are used to join two lines they are considered as one knot and called a blood knot.
A half blood knot is one of the strongest knots for tying a medium-size hook to a medium-size line such as hooksize 4 to 4/0 onto line size 6 lb to 30 lb. In tying the blood knot, the two lines to be joined are overlapped for 6–8 cm with the short ends of the two lines in opposite directions; the short end of one line is wrapped 4–6 times around the second line and the remaining portion of the first short end brought back and passed between the lines at the beginning of the wraps. The short end of the second line is wrapped 4–6 times around the first line and the end of this line brought back and passed through what is now an oval space between the first wrap of each set; the above method has been called by Stanle Barnes "outcoil", is contrasted with the method that resembles the finished knot from the start, "incoil". The images here are incorrect to present the finished knot as having its free/"tag" ends go from the center of the knot to the extreme ends. In fishing line, in other material if not deliberately set snug and maybe re-set after some initial tensioning, the outcoil form will transform into the incoil form.
The lines are moistened and the wraps tightened by pulling on the long ends of the line. This causes the wraps to tighten and compress, creating two short sections of "barrel", which look much like a hangman's knot, that slide together; the short ends of the line are trimmed close to the wraps, or one of the ends may be left intact to be used for a second fly or lure, called a "dropper". List of bend knots List of knots Video instructions on how to tie a half blood knot Video instructions for tying a Blood Knot Grog. "Blood Knot". Animated Knots. Retrieved September 5, 2016
A turn is one round of rope on a pin or cleat, or one round of a coil. Turns can be made around various objects, through rings, or around the standing part of the rope itself or another rope. A turn denotes a component of a knot; when the legs of a loop are brought together and crossed the rope has taken a turn. One distinguishes between single turn, round turn, two round turns depending on the number of revolutions around an object; the benefit of round turns is best understood from the capstan equation. A riding turn is a section of rope that passes on top of another section of rope parallel or at only a slight angle to the section below. Examples of riding turns can be seen in both the strangle knot; the second course of wrappings in some seizing knots can be referred to as riding turns. The formation of an unintentional riding turn on a sailing winch can cause it to jam. A single hitch is a type of knot; this hitch is a turn tied around an object where the end is secured by its own standing part.
List of knots
A bungee cord known as a shock cord - and in Australia, an occy strap or octopus strap - is an elastic cord composed of one or more elastic strands forming a core covered in a woven cotton or polypropylene sheath. The sheath does not materially extend elastically, but it is braided with its strands spiralling around the core so that a longitudinal pull causes it to squeeze the core, transmitting the core's elastic compression to the longitudinal extension of the sheath and cord. Specialized bungees, such as some used in bungee jumping, may be made of elastic strands. Bungee cords have been used to provide a lightweight suspension for aircraft undercarriages from before World War I, are still used on many small homebuilt aircraft where weight remains critical. Bungee cords were used in parachuting to assist in opening the old-style parachute container after the ripcord was pulled. Today, bungee cords are most used to secure objects without tying knots and to absorb shock. Inexpensive bungee cords, with metal or plastic hooks on each end, are marketed as a general utility item.
In Australia, this form is known as an "occy", strap. These can be an individual strap, or a set of four hooked straps held together by a metal ring allowing the occy strap to secure items around various tie points, for example a suitcase to a car roof rack. Extensions of the concept are available as a coarse net of bungee cords with metal or plastic hooks around the periphery, for securing irregularly shaped loads of luggage and cargo on the backs of pickup trucks, roofs of cars, so on. Bungee cords have been used to make bungee chairs and for other purposes; the origin of the name "bungee", bungie" or "bungy" is uncertain. The Oxford English Dictionary records the use in 1938 of the phrase bungee-launching of gliders using an elasticized cord. Bungee cords are a major source of eye injury and doctors suggest not using them
The Ashley Book of Knots
The Ashley Book of Knots is an encyclopedia of knots written and illustrated by the American artist Clifford W. Ashley. First published in 1944, it was the culmination of over 11 years of work; the book contains 3854 numbered entries and an estimated 7000 illustrations. The entries include knot instructions and some histories, categorized by type or function, it remains one of the most comprehensive books on knots. Due to its scope and wide availability, The Ashley Book of Knots has become a significant reference work in the field of knotting; the numbers Ashley assigned to each knot can be used to unambiguously identify them. This helps to identify knots despite local colloquialisms or identification changes. Citations to Ashley numbers are in the form: "The Constrictor Knot", "ABOK #1249" or simply "#1249" if the context of the reference is clear or established; some knots have more than one Ashley number due to having multiple forms. For example, the main entry for #1249 is in the chapter on binding knots but it is listed as #176 in a chapter on occupational knot usage.
The Ashley Book of Knots was compiled and first published before the introduction of synthetic fiber ropes, during a time when natural fiber cordage - twisted, laid, or braided rope - was most used. The commentary on some knots may fail to address their behavior when tied with modern synthetic fiber or kernmantle style ropes. Ashley suffered a debilitating stroke the year, he was not able to oversee a corrected edition. Corrections submitted by the International Guild of Knot Tyers were incorporated in 1991; the original list of revisions submitted to the publisher is believed to have been lost, but many had been collected from a series of articles in Knotting Matters, the Guild's quarterly publication. Additional errors have been identified since the 1991 corrections. At least one knot, the Hunter's bend, was added in 1979. Clifford W. Ashley; the Ashley Book of Knots. Doubleday, New York 1944. ISBN 0-385-04025-3 Reprint: Doubleday, New York 1963–1979, ISBN 0-571-09659-X The Ashley Book of Knots on Internet Archive.
Thou Shalt Knot: Clifford W. Ashley. A New Bedford Whaling Museum exhibition
The Flemish bend known as a figure eight bend, a double figure eight bend, a rewoven figure eight is a knot for joining two ropes of similar size. A loose figure-eight knot is tied in the end of one rope; the second rope is now threaded backwards parallel to the first rope. When properly dressed, the two strands do not cross each other. Although secure, it is susceptible to jamming. If tied and stressed properly it does not need "stopper" or "safety" knots; the Flemish bend called figure-eight bend, is given in knot monographs but is used. It is bulky and bothersome to tie, not to be preferred to the following knot, made in a similar manner. List of bend knots List of knots Flemish, or double figure eight, bend animated video by Marinews Grog. "Flemish, or figure eight, bend". Animated Knots