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Pipe Hitch
A pipe hitch is a hitch-type knot used to secure smooth cylindrical objects, 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" and as "another method of tying to a rectangular timber." Information The pipe hitch will not slip when tied correctly to a pipe or pole. This knot is a variation of the Round turn and two half-hitches.Ashley (1944), p.332. This knot can be used with a rope to pull a pipe or spar out of the ground, or to hoist a pipe or beam. Instructions The pipe hitch is started by wrapping four or more coils around a pipe or pole. It is finished by tying the working end around the standing part with a clove hitch, and less commonly with a cow hitch or a buntline hitch. See also *List of knots This list of knots includes many alternative names for common knots and lashings. Knot names have evolved over time, and there are many conflicting or confusing naming issues. The overhand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling Hitch
The rolling hitch is a knot (see also Magnus hitch) used to attach a rope to a rod, pole, or another rope. A simple friction hitch, it is used for lengthwise pull along an object rather than at right angles. The rolling hitch is designed to resist lengthwise movement for only a single direction of pull.Clifford W. Ashley, ''The Ashley Book of Knots'' (New York: Doubleday, 1944), 292. A common usage while sailing is for rigging a Stopper knot#Nautical usage, stopper to relax the tension on a sheet (sailing), sheet so that a jammed winch or Block (sailing), block can be cleared. Naming At the turn of the 19th century the knot now known as the "rolling hitch" was called the "Magnus hitch" or "Magner's hitch", and the name "rolling hitch" referred to Round turn and two half-hitches, two round turns and two half-hitches. In 1841 Richard Henry Dana, Jr. used the present-day names in his work ''The Seaman's Friend'', and subsequent authors have continued to use this terminology.Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klemheist Knot
The klemheist knot or French Machard knot is a type of friction hitch that grips the rope when weight is applied, and is free to move when the weight is released. It is used similarly to a Prusik knot or the Bachmann knot to ascend or descend a climbing rope. One advantage is that webbing can be used as an alternative to cord. The Klemheist is easier to slide up than a Prusik. The klemheist is also a way to attach a snubber to the anchor rope of small boats, with the advantage that it is easy to undo.Eric Vola, ÂLe nÅ“ud Machard et son histoire », site du CAF-Marseille, 2015 Sometimes the knot name is misspelled as kleimheist, with an extra i. Technique Make a secure loop of a cord (see Double fisherman's knot) that is definitely narrower than the rope. Wrap from one end around the rope two or three times in a direction that will be down. The loose end is then threaded through the starting end, and carefully tightened to leave the wraps neat. In use, strain must be taken on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tensionless Hitch
A Tensionless hitch is an anchor knot used for rappelling or rope rescue. Unlike most knots, the tensionless hitch retains a 100% efficiency rating, meaning the strength of the knot is equal to the strength of the rope; it is not a significant stress riser. Tying The working end of a rope is prepared by tying a figure-eight loop Figure-eight loop (also figure-eight on a bight, figure-eight follow-through, figure-eight retrace, Flemish loop, or Flemish eight) is a type of knot created by a loop on the bight. It is used in climbing and caving. The double figure eight i ..., and then clipping a carabiner through that loop. The rope is then wrapped around a smooth pole, pipe, round beam or tree branch which has a diameter greater than the rope. The rope is typically wrapped 3 to 4 times around the anchor, without crossing. Finally, the working end is attached to the standing part with the carabiner. An overhand knot may be tied around the standing part before the final wrap a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taut-line Hitch
The taut-line hitch is an adjustable loop knot for use on lines under tension. It is useful when the length of a line will need to be periodically adjusted in order to maintain tension. It is made by tying a rolling hitch around the standing part after passing around an anchor object. Tension is maintained by sliding the hitch to adjust the size of the loop, thus changing the effective length of the standing part without retying the knot. It is typically used for securing tent lines in outdoor activities involving camping, by arborists when climbing trees, for tying down aircraft, for creating adjustable moorings in tidal areas, and to secure loads on vehicles. A versatile knot, the taut-line hitch was even used by astronauts during STS-82, the second Space Shuttle mission to repair the Hubble Space Telescope. Naming The adjustable loop forms of the rolling hitch and Magnus hitch, in addition to being called either of those two names, have also come to be known v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hitch Knot
A hitch knot is a type of knot used to secure a rope to an object or another rope. It is used in a variety of situations, including climbing, sailing, and securing loads. Hitch knots are classified based on their ability to be tightened or released, their resistance to slipping, and their strength. Some common types of hitch knots include the fisherman's knot, the water knot, and the clove hitch. Hitch knots are important because they allow a rope to be securely fastened to an object, enabling the rope to support weight or transmit force. Physical theory of hitches A simple mathematical theory of hitches has been proposed by Bayman and extended by Maddocks and Keller. It makes predictions that are approximately correct when tested empirically. Alphabetical list of hitch knots See also * List of knots * Single hitch References {{Knots ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pipe (fluid Conveyance)
A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids. It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members. In common usage the words ''pipe'' and ''tube'' are usually interchangeable, but in industry and engineering, the terms are uniquely defined. Depending on the applicable standard to which it is manufactured, pipe is generally specified by a nominal diameter with a constant outside diameter (OD) and a schedule that defines the thickness. Tube is most often specified by the OD and wall thickness, but may be specified by any two of OD, inside diameter (ID), and wall thickness. Pipe is generally manufactured to one of several international and national industrial standards. While similar standards exist for specific industry applicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Ashley Book Of Knots
''The Ashley Book of Knots'' is an encyclopedia of knots written and illustrated by the American sailor and artist Clifford W. Ashley. First published in 1944, it was the culmination of over 11 years of work. The book contains 3,857 numbered entries (the final number, "3854", is added to by three "1/2" #s (794.5, 1034.5, & 2585.5) and, in later editions of the book, #1425a for Hunter's Bend; and one number has no entry) and approximately 7,000 illustrations. The entries include knot instructions, uses, and some histories, categorized by type or function. It remains one of the most important and comprehensive books on knots. Use as a reference 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 usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round Turn And Two Half-hitches
The round turn and two half hitches is a hitch used to secure the end of a rope to a fixed object. The name refers to the components used to form the knot: a round turn wraps the rope around the object (completely encircling it) and the two half hitches secure the end around the standing part. Variations of this hitch can be made with differing numbers of turns and half-hitches; an example is illustrated below. With additional turns, it becomes a pipe hitch A pipe hitch is a hitch-type knot used to secure smooth cylindrical objects, 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" and as "another method of tying .... frame, left, Two round turns and three half hitches. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clove Hitch
The clove hitch is a type of knot. Along with the bowline and the sheet bend, it is often considered one of the most important knots. A clove hitch is two successive half-hitches around an object. It is most effectively used as a crossing knot. It can be used as a binding knot, but is not particularly secure in that role. A clove hitch made around the rope's own standing part is known as either two half-hitches or buntline hitch, depending on whether the turns of the clove hitch progress away from or towards the hitched object. Usage This knot is particularly useful where the length of the running end needs to be adjustable, since feeding in rope from either direction will loosen the knot to be tightened at a new position. With certain types of cord, the clove hitch can slip when loaded. In modern climbing rope, the clove hitch will slip to a point, and then stop slipping. When tied around a carabiner, the load should pull on the end closest to its spine. With smaller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cow Hitch
The cow hitch, also called the lark's head, is a hitch knot used to attach a rope to an object. The cow hitch comprises a pair of half-hitches tied in opposing directions, as compared to the clove hitch in which the half-hitches are tied in the same direction. It has several variations and is known under a variety of names. It can be tied either with the end of the rope or with a bight. History A simple and useful knotted structure, the cow hitch has been known since at least the first century when described by Greek physician Heraklas in a monograph on surgical knots and slings. Known under a variety of names, this knot has been used both on land and at sea. The common alternate name "lark's head" is attributed to Tom Bowling (pseudonym) in the 1866 work ''The Book of Knots'' which is presumed to have been adapted from a French manuscript; lark's head is a literal translation of the French name for the knot, ''tête d'alouette''.Ahsley, p. 11. Variations The underlying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buntline Hitch
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 subjected to extreme loads. Given the knot's propensity to jam, it is often made in slipped form. History Simple and effective, the buntline hitch dates to the age of sail, when it was used to secure buntlines to the foot of the sailsBrion Toss, ''Chapman's Nautical Guides: Knots'' (New York: Hearst Marine Books, 1990), 39.Clifford W. Ashley, ''The Ashley Book of Knots'' (New York: Doubleday, 1944), 310. on square-rigged ships. That the buntline hitch was the preferred knot speaks to its security and reliability.Geoffrey Budworth, ''The Complete Book of Knots'' (London: Octopus, 1997), 51. Once set, repeated jerking and slatting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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