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Chain Saw
A chainsaw (or chain saw) is a portable gasoline-, electric-, or battery-powered saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar. It is used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks in wildland fire suppression, and harvesting of firewood. Chainsaws with specially designed bar-and-chain combinations have been developed as tools for use in chainsaw art and chainsaw mills. Specialized chainsaws are used for cutting concrete during construction developments. Chainsaws are sometimes used for cutting ice; for example, ice sculpture and winter swimming in Finland. History In surgery The origin of chain saws in surgery is debated. A "flexible saw", consisting of a fine serrated link chain held between two wooden handles, was pioneered in the late 18th century (c. 1783–1785) by two Scottish doctors, John Aitken and James Jeffray, for symphysiotomy and excision of diseased bone, respectively. It w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chainsaw
A chainsaw (or chain saw) is a portable gasoline-, electric-, or battery-powered saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar. It is used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks in wildland fire suppression, and harvesting of firewood. Chainsaws with specially designed bar-and-chain combinations have been developed as tools for use in chainsaw art and chainsaw mills. Specialized chainsaws are used for cutting concrete during construction developments. Chainsaws are sometimes used for cutting ice; for example, ice sculpture and winter swimming in Finland. History In surgery The origin of chain saws in surgery is debated. A "flexible saw", consisting of a fine serrated link chain held between two wooden handles, was pioneered in the late 18th century (c. 1783–1785) by two Scottish doctors, John Aitken and James Jeffray, for symphysiotomy and excision of diseased bone, respectively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelviotomy
Symphysiotomy is an outdated surgical procedure in which the cartilage of the pubic symphysis is divided to widen the pelvis allowing childbirth when there is a mechanical problem. It is also known as pelviotomy, synchondrotomy. Introduction Symphysiotomy was advocated in 1597 by Severin Pineau after his description of a diastasis of the pubis on a hanged pregnant woman. Thus symphysiotomies became a routine surgical procedure for women experiencing an obstructed labour. They became less frequent in the late 20th century after the risk of maternal death from caesarean section decreased (due to improvement in techniques, hygiene, and clinical practice). Indications The most common indications are a trapped head of a breech baby, shoulder dystocia which does not resolve with routine manoeuvres, and obstructed labor at full cervical dilation when there is no option of a caesarean section. In some Irish cases, caesarean sections were performed after symphysiotomies. Currently th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emil Lerp
Emil Lerp (1 January 1886 – 1 January 1966) was a German businessman and inventor of the first mass produced transportable gasoline chainsaw. Career Lerp was born in Goldbach, Saxe-Coburg and Gotha in 1886. In 1927, he invented the transportable gasoline chainsaw. Lerp tested his invention on a hill called Dolmar, and named his company after the testing site. On 15 June 1928, Lerp received a patent in Germany for his invention.Baedeker-Reiseführer: ''Thüringen.'' Third edition. Ostfildern 2013, ., p. 22(online auf: ''books.google.de'')/ref> His former business partner Andreas Stihl founded the German company Stihl Stihl (, ) is a German manufacturer of chainsaws and other handheld power equipment including trimmers and blowers. Their headquarters are in Waiblingen, Baden-Württemberg, near Stuttgart, Germany. Stihl was founded in 1926 by Andreas Stihl, an ... which also makes chainsaws. References External links dolmarpowerproducts.com 1886 births 1966 deaths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andreas Stihl
Andreas Stihl (10 November 1896 in Zürich, Switzerland – 14 January 1973 in Rohrbronn, Baden-Württemberg, Germany) was a Swiss-born German engineer and important inventor in the area of chainsaws, and the founder of Andreas Stihl AG & Company KG. He is often hailed as the "Father of the chainsaw". Early life Stihl went to the Volksschule in Zürich, before moving to relatives in Germany. He attended the Realschule in Singen (Baden-Württemberg) and the Gymnasium in Düsseldorf-Oberkassel. From 1915 until his dismissal by injuries in 1917, Stihl fought in the First World War in the German Army. From 1917 until 1920, he studied mechanical engineering in Eisenach. Invention of the chainsaw In 1923, together with his friend Carl Hohl, he founded an engineering firm in Stuttgart, which was dissolved in 1926. Stihl founded a new company, for steam boiler prefiring systems, in the same year. He also patented the "Cutoff Chainsaw for Electric Power" in 1926, which weigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Buford Cox
Joseph Buford Cox (1905 – August 10, 2002), was an American inventor and businessman. He invented what is now known as the chipper type chain for chain saws. He based his design on the C-shaped jaws of the larva of the timberman beetle. Cox watched the destructive larvae of the timber beetle (Ergates spiculatus) for many hours. The beetle's cutting action was left and right, side to side, rather than scratching or burrowing straight ahead. Cox adapted this concept to a new chain saw of his own design put into production during the late 1940s. Joseph and his wife, Alice, founded "The Oregon Saw Chain Co." in 1947. Cox later started a small casting company called OMARK, now known as "Omark Industries". In time, Oregon Saw Chain became a subsidiary of Omark Industries which was in turn acquired in 1985 by Blount, Inc., of Montgomery, Alabama. Blount merged in 1999 with Lehman Brothers Merchant Banking Partners and became known as Blount International, Inc. Today the company is kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festool
Festool is a brand of high-end power tools from Germany. Festool Group GmbH & Co. KG is based in Wendlingen and is a subsidiary of the TTS Tooltechnic Systems holding company. It is known for its system-based approach to power tools and its focus on dust extraction. The company was founded by Gottlieb Stoll and Albert Fezer in 1925 under the name ''Fezer & Stoll''. The company manufactured the world's first portable chainsaw in 1927. The company's name was shortened to ''Festo'' in 1933. Festo founded Festo Tooltechnic in 1992, and the power tool division was spun off into an independent company, Festool, in 2000. The company remains privately owned by the family of co-founder Gottlieb Stoll. As of October 2017, Festool operates subsidiaries in 26 countries including the United Kingdom, the United States, Canada, France, the Netherlands, and Russia. In late 2017, it set up its first Asian subsidiary in South Korea. Festool products are primarily manufactured in Neidlingen (Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festo
Festo is a German automation company based in Esslingen am Neckar, Germany. Festo produces and sells pneumatic and electrical control systems and drive technology for factories and process automation. Festo Didactic also offers industrial education and consultation services and is one of the sponsors and partners of the WorldSkills Mechatronics Competitions. Sales subsidiaries, distribution centres and factories of Festo are located in 61 countries worldwide. The company was named after its founders Albert Fezer and Gottlieb Stoll. Animal robots Festo is known for making moving robots that move like animals, such as the seagull-like SmartBird, jellyfish, butterflies and kangaroos. In 2018 they also added a flying fox and a rolling spider to the list. Festo calls their Bionic Flying Fox an “ultra-lightweight flying object with intelligent kinematics.” See also * BionicKangaroo * Robotino Robotino is a mobile robot system made by ''Festo Didactic'', and used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ripper Chainsaw
Ripper or The Ripper may refer to: People * Ripper (surname) * Paul Burchill, ring name "The Ripper", a professional wrestler based on Jack the Ripper * Kirk Hammett, nicknamed "The Ripper", the lead guitarist in the heavy metal band Metallica * Jack the Ripper, a pseudonym for an unidentified serial killer (or killers) active in London in the latter half of 1888 * Ripper Jayanandan (born 1968), Indian serial killer * Tim "Ripper" Owens, a heavy metal singer * Psicosis II, a Mexican ''Luchador enmascarado'' who was renamed Psyco Ripper and then Ripper * Terry "The Ripper" Rivera, a professional wrestler from All-Star Wrestling * Danny Rolling, serial killer known as the "Gainesville Ripper" * Peter Sutcliffe, known as the Yorkshire Ripper, a serial killer active in Yorkshire from 1975–1980 * Brandon Vedas, nicknamed "Ripper", a man who died of a drug overdose on IRC Arts and entertainment Fictional characters * Ripper (G.I. Joe), in the G.I. Joe universe * "Ripper", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osteotome
An osteotome is an instrument used for cutting or preparing bone. Osteotomes are similar to a chisel but bevelled on both sides. They are used today in plastic surgery, orthopedic surgery and dental implantation. The chain osteotome, originally referred to simply as the osteotome, was invented by the German physician Bernhard Heine in 1830. This device is essentially a small chainsaw. See also *Instruments used in general surgery There are many different surgical specialties, some of which require very specific kinds of surgical instruments to perform. General surgery is a specialty focused on the abdominal contents, as well as the thyroid gland, and diseases involving ... References {{Surgical instruments Orthopaedic instruments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernhard Heine
Bernhard Heine (August 20, 1800, Schramberg (Black Forest) – July 31, 1846, Glockenthal near Thun (Switzerland)) was a German physician, bone specialist and the inventor of the osteotome, a medical tool for cutting bones. Apprenticeship in Würzburg Bernhard Heine was born on August 20, 1800 as the son of a tanner in Schramberg. At the age of ten (according to other references, thirteen) years he was apprenticed to his uncle Johann Georg Heine in Würzburg as an orthopaedic mechanic. Without any enrolment he later attended lectures in medicine at the University of Würzburg. After a number of journeys he took over his own department in his uncle's orthopaedic institute. When Johann Georg moved to the Netherlands in 1829, Bernhard - together with his cousin Joseph Heine - became the head of the Würzburg institution. In 1837 Bernhard Heine married his cousin (Johann Georg's daughter) Anna Heine (born 1801). Inventing the osteotome In 1830, after years of research and dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
