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Jumar
An ascender is a device (usually mechanical) used for directly ascending, or for facilitating protection, with a fixed rope when climbing on steep mountain terrain. A form introduced in the 1950s became so popular it began the term "Jumar" for the device, and the verb "to jumar" to describe its use in ascending. Ascenders can also be used as braking components within a rope-hauling system, often used in rescue situations. Use Ascenders are usually used in pairs on a single rope and offer similar functionality to friction hitch, friction knots, but are faster, safer, and easier to use, albeit still with consequences in weight and in security (as ascenders can, even with a locking carabiner, come off the rope, and fail by shredding the rope at high loads, rather than slipping and fusing as with friction knots). A mechanical ascender employs a Cam (mechanism), cam which allows the device to slide freely in the intended direction of movement, but provides a firm grip on the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aid Climbing
Aid climbing is a form of rock climbing that uses mechanical devices and equipment, such as aiders (or ladders), for upward momentum. Aid climbing is contrasted with free climbing (in both its traditional or sport free climbing formats), which only uses mechanical equipment for protection, but not to assist in upward momentum. Aid climbing can involve hammering in permanent pitons and bolts, into which the aiders are clipped, but there is also 'clean aid climbing' which avoids any hammering, and only uses removable placements. While aid climbing traces its origins to the start of all climbing when ladders and pitons were common, its use in single-pitch climbing waned in the early 20th century with the rise of free climbing. At the same time, the Dolomites became the birthplace of modern " big wall aid climbing", where pioneers like Emilio Comici developed the early tools and techniques. Aid climbing's "golden age" was in the 1960s and 1970s on Yosemite's granite big ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jumar Rope Ascender
An ascender is a device (usually mechanical) used for directly ascending, or for facilitating protection, with a fixed rope when climbing on steep mountain terrain. A form introduced in the 1950s became so popular it began the term "Jumar" for the device, and the verb "to jumar" to describe its use in ascending. Ascenders can also be used as braking components within a rope-hauling system, often used in rescue situations. Use Ascenders are usually used in pairs on a single rope and offer similar functionality to friction knots, but are faster, safer, and easier to use, albeit still with consequences in weight and in security (as ascenders can, even with a locking carabiner, come off the rope, and fail by shredding the rope at high loads, rather than slipping and fusing as with friction knots). A mechanical ascender employs a cam which allows the device to slide freely in the intended direction of movement, but provides a firm grip on the rope when pulled in the opposite d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prusik
A Prusik ( ) is a friction hitch or knot used to attach a loop of cord around a rope, applied in climbing, canyoneering, mountaineering, caving, rope rescue, ziplining, and by arborists. The term Prusik is a name for both the loops of cord used to tie the hitch and the hitch itself, and the verb is "to prusik" or "prusiking" (i.e. using a Prusik to ascend). More casually, the term is used for any friction hitch or device that can grab a rope (see autoblock). Due to the pronunciation, the word is often misspelled Prussik, Prussick, or Prussic. The Prusik hitch is named after its putative inventor, the Austrian mountaineer Karl Prusik. It was shown in a 1931 Austrian mountaineering manual for rope ascending. It was used on several mountaineering routes of the era to ascend the final summit, where a rope could be thrown over the top and anchored so that climbers could attain the summit by prusiking up the other side of the rope. A Prusik made from cord does little or no damag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed Rope
In climbing and mountaineering, a fixed-rope (or fixed-line) is the practice of installing networks of in-situ anchored Climbing rope#Static rope, static climbing ropes on climbing routes to assist any following climbers (and Porter (carrier), porters) to ascend more rapidly—and with less effort—by using mechanical aid devices called Ascender (climbing), ascenders. Fixed ropes also allow climbers (and porters) to descend rapidly using mechanical devices called Descender (climbing), descenders. Fixed ropes also help to identify the line of the climbing route in periods of low visibility (e.g. a storm or white-out). The act of ascending a fixed rope is also called jumaring, which is the name of a type of ascender device, or also called jugging in the US. Fixed ropes are put in place by the lead climbing, lead climbers, and the ropes may or may not be removed as the climbers descend after completing the route. For popular Himalayan climbing routes, extensive networks of fixed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petzl Ascenders (On Rope)
Petzl is a French manufacturer of climbing gear, caving gear, work-at-height equipment, and headlamps based in Crolles (near Grenoble), France. The company was created by the cave explorer Fernand Petzl in the mid-1970s. Their three specialties are: *Vertical sports: equipment for mountaineering, climbing, caving, etc. *Work at height and rescue: solutions for progression and safety in difficult-access worksites and in technical rescue. *Headlamps (head torches) that provide hands-free lighting. History Fernand Petzl, born in 1912, began his caving career in the late 1920s and early 1930s. In 1936, Petzl was introduced to, then small-time caver, Pierre Chevalier. The two began work on improving the technology behind their sport. In 1943, Chevalier designed and tested the first nylon rope to replace caving ladders. This technology provided the foundation for nearly all vertical safety methods to come. Chevalier's innovation led to the first 1,000 meter cave descent when Pet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caving Equipment
Caving equipment is equipment used by cavers and speleologists to aid and protect them while exploring caves. The term may also be used to refer to equipment used to document caves, such as photographic and surveying equipment. Originally, cave diving equipment was quite limited, but the increasing popularity of caving during the 20th century led to the creation of specialist caving equipment and companies. Due to the greatly varying conditions of caves throughout the world, there is a multitude of different equipment types and categories. Cavers exploring a largely dry system may wear a fleece one-piece undersuit with a protective oversuit while cavers exploring a very wet cave may opt to use wetsuits. Cavers in large dry systems in the tropics and in desert climates may simply opt to wear shorts and a T-shirt. History The earliest cavers in Europe and North America were limited in their explorations by a lack of suitable equipment. Explorers of the early 1800s, when caving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1953 British Mount Everest Expedition
The 1953 British Mount Everest expedition was the ninth mountaineering expedition to attempt the first ascent of Mount Everest, and the first confirmed to have succeeded when Tenzing Norgay and Edmund Hillary reached the summit on 29 May 1953. Led by John Hunt, Baron Hunt, Colonel John Hunt, it was organised and financed by the Joint Himalayan Committee. News of the expedition's success reached London in time to be released on the morning of Queen Elizabeth II's coronation, on 2 June that year. Background Identified as the highest mountain in the world during the 1850s, Everest became a subject of interest during the Golden age of alpinism, although its height made it questionable if it could ever be climbed. In 1885, Clinton Thomas Dent's ''Above the Snow Line'' suggested that an ascent might be possible. Practical considerations (and World War I) prevented significant approaches until the 1920s. George Mallory is quoted as having said he wanted to climb Everest "Because it's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Hunt, Baron Hunt
Henry Cecil John Hunt, Baron Hunt (22 June 1910 – 7 November 1998) was a British Army officer who is best known as the leader of the successful 1953 British expedition to Mount Everest. Early life and military career Hunt was born in Simla, British India on 22 June 1910, the son of Captain Cecil Edwin Hunt of the Indian Army, and a great-great-nephew of the explorer Sir Richard Burton. His father was killed in action during the First World War. Hunt, from the age of 10, spent much holiday time in the Alps, learning some of the mountaineering skills he would later hone while taking part in several expeditions in the Himalayas while serving in India. He made a guided ascent of Piz Palu at 14. He was educated at Marlborough College before entering the Royal Military College, Sandhurst, where he was awarded the King's Gold Medal and the Anson Memorial Sword. After Sandhurst, Hunt was commissioned as a second lieutenant in the King's Royal Rifle Corps (KRRC) on 30 January 193 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petzl
Petzl is a French manufacturer of climbing gear, caving gear, work-at-height equipment, and headlamps based in Crolles (near Grenoble), France. The company was created by the cave explorer Fernand Petzl in the mid-1970s. Their three specialties are: *Vertical sports: equipment for mountaineering, climbing, caving, etc. *Work at height and rescue: solutions for progression and safety in difficult-access worksites and in technical rescue. *Headlamps (head torches) that provide hands-free lighting. History Fernand Petzl, born in 1912, began his caving career in the late 1920s and early 1930s. In 1936, Petzl was introduced to, then small-time caver, Pierre Chevalier. The two began work on improving the technology behind their sport. In 1943, Chevalier designed and tested the first nylon rope to replace caving ladders. This technology provided the foundation for nearly all vertical safety methods to come. Chevalier's innovation led to the first 1,000 meter cave descent when P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fernand Petzl
Fernand Petzl (April 7, 1913 – May 31, 2003) was a caver and manufacturer of outdoor equipment under the brand name Petzl. Petzl lived most of his life in the village of Saint-Ismier (near Grenoble), France at the foot of the mountain Dent De Crolles. He first went caving in Trou du Glaz in 1933, and was immediately captivated by the idea of exploring beyond the cave Caves or caverns are natural voids under the Earth's Planetary surface, surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance undergrou ...'s known limits. Subsequent explorations there with Pierre Chevalier, Charles Petit-Didier and others culminated in connections to other caves in the massif, forming the Réseau de la Dent de Crolles which, in 1947, became the deepest cave in the world. Petzl also participated in explorations in the Gouffre Berger, which set a new world depth record in 1956 as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belay
In climbing and mountaineering, belaying comprises techniques used to create friction within a climbing protection system, particularly on a climbing rope, so that a falling climber does not fall very far. A climbing partner typically applies tension at the other end of the rope whenever the climber is not moving, and removes the tension from the rope whenever the climber needs more rope to continue climbing. The belay is the place where the belayer is anchored, which is typically on the ground, or on ledge (where it is also called a belay station) but may also be a hanging belay where the belayer themself is suspended from an anchor in the rock on a multi-pitch climb. Description Belaying is a critical part of climbing safety. Correct belaying methods allow a belayer to hold the entire weight of the climber with relatively little force and easily arrest falls. In its simplest form, a belay consists of a rope that runs from a climber to another person (the belayer) who c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
