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Double Fisherman's Knot
The double fisherman's knot or grapevine knot is a bend. This knot and the triple fisherman's knot are the variations used most often in climbing, arboriculture, and search and rescue. The knot is formed by tying a double overhand knot, in its strangle knot form, with each end around the opposite line's standing part. Usage A primary use of this knot is to form high strength (round) slings of cord for connecting pieces of a climber's protection system. Other uses This knot, along with the basic fisherman's knot can be used to join the ends of a necklace cord. The two strangle knots are left separated, and in this way the length of the necklace can be adjusted without breaking or untying the strand. Tying Line form File:Doppelter Spierenstich-1.jpg, File:Doppelter Spierenstich-2.jpg, File:Doppelter Spierenstich-3.jpg, File:Doppelter Spierenstich-4.jpg, Drop form File:Doppelter Spierenstich Tropfen-1.jpg, File:Doppelter Spierenstich Tropfen-2.jpg, File:Doppelter Spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisherman's Knot
The fisherman's knot is a bend (a knot for joining two lines) with a symmetrical structure. The fisherman's knot is also known as: angler's knot, English knot, halibut knot, waterman's knot, and true lover's knot. Properties The bend consists of two overhand knots, each tied around the standing part of the other. It is compact, jams when tightened, and the working ends can be cropped very close to the knot. It can easily be tied with cold, wet hands. Image:Spierenstich-1.jpg, 1. First overhand Image:Spierenstich-2.jpg, 2. Second overhand Image:Spierenstich-3.jpg, 3. Tighten Uses These properties are well suited to fishing, so the fisherman's knot is often used with fishing line. However it can slip when using modern nylon monofilament line, which is more slippery than historic fishing materials. If more holding strength is required, the overhand knots can be made with more turns, as in the double fisherman's knot, and triple fisherman's knot. Other knots sometimes p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Search And Rescue
Search and rescue (SAR) is the search for and provision of aid to people who are in distress or imminent danger. The general field of search and rescue includes many specialty sub-fields, typically determined by the type of terrain the search is conducted over. These include mountain rescue; ground search and rescue, including the use of search and rescue dogs (such as K9 units); urban search and rescue in cities; combat search and rescue on the battlefield and air-sea rescue over water. International Search and Rescue Advisory Group (INSARAG) is a UN organisation that promotes the exchange of information between national urban search and rescue organisations. The duty to render assistance is covered by Article 98 of the UNCLOS. Definitions There are many different definitions of search and rescue, depending on the agency involved and country in question. *Canadian Armed Forces and Canadian Coast Guard: "Search and Rescue comprises the search for, and provision of ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 knot, for example, is also known as the thumb knot. The figure-eight knot is also known as the Savoy knot or the Flemish knot. A * Aberdeen knot - preferred for closure of intradermal sutures * Adjustable bend – can be easily lengthened or shortened * Adjustable grip hitch – a simple hitch which may easily be shifted up and down the rope while slack * Albright special – used to tie two different diameters of line together, for instance to tie monofilament to braid *Alpine butterfly (also known as a butterfly loop) – a static loop mostly used by mountain climbers and rappellers for securing a carabiner to static rope * Alternate ring hitching – covering a ring in hitching can prevent damage * Anchor bend – attaching a rope to a ring or similar termination * Angler's loop – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bend Knots
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but lists are frequently written down on paper, or maintained electronically. Lists are "most frequently a tool", and "one does not ''read'' but only ''uses'' a list: one looks up the relevant information in it, but usually does not need to deal with it as a whole". Lucie Doležalová,The Potential and Limitations of Studying Lists, in Lucie Doležalová, ed., ''The Charm of a List: From the Sumerians to Computerised Data Processing'' (2009). Purpose It has been observed that, with a few exceptions, "the scholarship on lists remains fragmented". David Wallechinsky, a co-author of '' The Book of Lists'', described the attraction of lists as being "because we live in an era of overstimulation, especially in terms of information, and lists help ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyneema
Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene (HMPE), it has extremely long chains, with a molecular mass typically between 2 and 6 million amu. The longer chain serves to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This results in a very tough material, with the highest impact strength of any thermoplastic presently made. UHMWPE is odorless, tasteless, and nontoxic. It embodies all the characteristics of high-density polyethylene (HDPE) with the added traits of being resistant to concentrated acids and alkalis, as well as numerous organic solvents. It is highly resistant to corrosive chemicals except oxidizing acids; has extremely low moisture absorption and a very low coefficient of friction; is self-lubricating (see boundary lubrication); and is highly resistant to abrasion, in some forms being 15 times more resistant to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisherman's Knot
The fisherman's knot is a bend (a knot for joining two lines) with a symmetrical structure. The fisherman's knot is also known as: angler's knot, English knot, halibut knot, waterman's knot, and true lover's knot. Properties The bend consists of two overhand knots, each tied around the standing part of the other. It is compact, jams when tightened, and the working ends can be cropped very close to the knot. It can easily be tied with cold, wet hands. Image:Spierenstich-1.jpg, 1. First overhand Image:Spierenstich-2.jpg, 2. Second overhand Image:Spierenstich-3.jpg, 3. Tighten Uses These properties are well suited to fishing, so the fisherman's knot is often used with fishing line. However it can slip when using modern nylon monofilament line, which is more slippery than historic fishing materials. If more holding strength is required, the overhand knots can be made with more turns, as in the double fisherman's knot, and triple fisherman's knot. Other knots sometimes p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climbing Equipment
Climbing equipment refers to a broad range of manufactured gear that is used in the activity or sport of climbing. Notable groups include: * Alpine climbing equipment as is used in alpine climbing and mountaineering * Deep-water soloing equipment as is used in deep-water soloing * Ice climbing equipment as is used in ice climbing and mixed climbing * Mixed climbing equipment as used in mixed climbing and dry-tooling * Mountaineering equipment as is used in mountaineering and alpine climbing * Rock-climbing equipment as is used in aid climbing, bouldering, competition climbing, free solo climbing, multi-pitch climbing (including big wall climbing), rope solo climbing, sport climbing Sport climbing (or bolted climbing) is a type of free climbing in the sport of rock climbing where the Lead climbing, lead climber clips their climbing rope, rope — via a quickdraw — into pre-drilled in-situ bolt (climbing), bolts for their ..., traditional climbing and top rope climbin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strangle Knot
The strangle knot is a simple binding knot. Similar to the constrictor knot, it also features an overhand knot under a riding turn. A visible difference is that the ends emerge at the outside edges, rather than between the turns as for a constrictor. This knot is a rearranged double overhand knot and makes up each half of the double fisherman's knot. See also *List of binding knots *List of knots *Clove hitch The clove hitch is an ancient type of knot, made of two successive single hitches tied around an object. It is most effectively used to secure a middle section of rope to an object it crosses over, such as a line on a fencepost. It can also be ... in comparison * Transom knot References {{knot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Overhand Knot
The double overhand knot or barrel knot is simply an extension of the regular overhand knot, made with one additional pass. The result is slightly larger and more difficult to untie. It forms the first part of the surgeon's knot and both sides of a double fisherman's knot. According to ''The Ashley Book of Knots'', "A double overhand knot tied in a cat-o'-nine-tails is termed a blood knot." When weighted, it can be difficult to untie, especially when wet. The strangle knot is a rearranged double overhand knot made around an object. It is sometimes used to secure items to posts. Instructions for tying # Tie an overhand knot at the end of a rope but do not tighten the knot down. # Pass the end of the line through the loop created by the first overhand knot. # Tighten the knot down while sliding it into place at the end of the line. Be sure to leave some tail sticking out from the end of the knot. Alternatively, the working end of the rope can be wrapped around the standing e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arboriculture
Arboriculture (, from ) is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants. The science of arboriculture studies how these plants grow and respond to cultural practices and to their environment. The practice of arboriculture includes cultural techniques such as selection, planting, training, fertilizer, fertilization, pest and pathogen control, pruning, Tree shaping, shaping, and felling, removal. Overview A person who practices or studies arboriculture can be termed an ''arborist'' or an ''arboriculturist''. A ''tree surgeon'' is more typically someone who is trained in the physical maintenance and manipulation of trees and therefore more a part of the arboriculture process rather than an arborist. Risk management, legal issues, and aesthetic considerations have come to play prominent roles in the practice of arboriculture. Businesses often need to hire arboriculturists to complete "tree hazard surveys" and generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triple Fisherman's Knot
The triple fisherman's knot is a List of bend knots, bend knot, used to join two ends of rope together. It is an extension of the double fisherman's knot and is recommended for tying slippery, stiff ultra-high-molecular-weight polyethylene (UHMWPE) and aramid kernmantle rope, cored ropes. Tying the triple fisherman's knot is nearly identical to the double fisherman's, except for a third wrap before passing the end through each half of the knot. Testing has shown that a failure mode exists at very high loads with the double fisherman's knot in ropes using Ultra-high-molecular-weight polyethylene#Fiber applications, Spectra and Technora cores. The sheath of the rope separates at the knot, and the high-lubricity core slips through the double fisherman's knot. Although the increase in ultimate strength is small, the triple fisherman's knot does not exhibit this behavior. This has led to the recommendation to use the triple fisherman's knot to avoid this particular failure mechan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climbing
Climbing is the activity of using one's hands, feet, or other parts of the body to ascend a steep topographical object that can range from the world's tallest mountains (e.g. the eight thousanders) to small boulders. Climbing is done for locomotion, sporting recreation, for competition, and is also done in trades that rely on ascension, such as construction and military operations. Climbing is done indoors and outdoors, on natural surfaces (e.g. rock climbing and ice climbing), and on artificial surfaces (e.g. climbing walls and climbing gyms). The sport of climbing evolved by climbers making first ascents of new types of climbing routes, using new climbing techniques, at ever-increasing grades of difficulty, with ever-improving pieces of climbing equipment. Guides and guidebooks were an important element in developing the popularity of the sport in the natural environment. Early pioneers included Walter Bonatti, Riccardo Cassin, Hermann Buhl, and Gaston Rébuffat, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
