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- فرانك ستولن (بالإنجليزية: John T. Parsons) (و. 1913 – 2007 م) هو مهندس من الولايات المتحدة الأمريكية . ولد في ديترويت .توفي في ترافيرس سيتي، عن عمر يناهز 94 عاماً. (ar)
- John Thoren Parsons (* 11. Oktober 1913 in Detroit, Michigan; † 19. April 2007 in Traverse City, Michigan) war ein US-amerikanischer Erfinder numerisch gesteuerter Werkzeugmaschinen (Numerical Control). Parsons hatte schwedische Einwanderer als Vorfahren. Er war in den 1940er Jahren im Propeller Lab der Wright-Patterson Air Force Base (zuständig für Rotorblätter von Hubschraubern), als er mit seinem Angestellten Frank L. Stulen Techniken der Fertigung von Helikopter-Rotorblättern und anderen Maschinenteilen mit numerisch gesteuerten Maschinen entwickelte. Die Einstellungen der Werkzeugmaschinen wurden aber damals noch von Menschen vorgenommen, nur die Interpolation der Rotorumrisse und daraus folgenden Fertigungsschritte am Computer berechnet. 1948 gründete er seine eigene Firma in Traverse City. In Zusammenarbeit mit IBM und dem Massachusetts Institute of Technology (Labor für Servomechanismen von ) wurde dann eine vollautomatische Steuerung der Maschinen entwickelt, dem später eine eigene Programmiersprache (Automatically Programmed Tools, APT) folgte. Der Prototyp wurde 1952 präsentiert. Ein 1952 eingereichtes Patent wurde Parsons 1958 erteilt. Die Lizenzen retteten seine Firma, der die Entwicklungskosten davonliefen, und schließlich verkaufte er die Rechte 1955 an die . Seine Gesellschaft wurde der weltgrößte Hersteller von Helikopter-Rotorblättern und hatte Fabriken in Detroit und Stockton. Seine Fabrik stellte auch die Treibstofftanks für die Saturn-Booster-Raketen her. 1993 wurde er in die National Inventors Hall of Fame aufgenommen. 1985 erhielt er mit Stulen die National Medal of Technology. 1989 wurde er Ehrendoktor der University of Michigan und 1997 der Lake Superior State University. 1982 erhielt er den Founders Award der Society of Manufacturing Engineers und 1968 den ersten Joseph Marie Jacquard Award der Numerical Control Society. (de)
- John Thoren Parsons (Detroit, Michigan, 1913ko urriaren 11 - Traverse City, Michigan, 2007ko apirilaren 18a) zenbakizko kontrol sistemaren asmatzaile ingeniari estatubatuarra izan zen, gaur egungo zenbakizko kontrolaren aitzindaria. Hasiera batean aeronautikarako garatua, tresna digitalizatuak (zenbakizko kontrolaren tornua, adibidez), konputagailu-txipak eta automobilak bezalako erabilerak ditu. Aireontzietan metalezko egituren lotura itsaskorra ere garatu zuen, batez ere helizetan, besteak beste.
* Datuak: Q6260076 (eu)
- John Thoren Parsons (11 de octubre de 1913, Detroit, Estados Unidos - 18 de abril de 2007) fue un ingeniero estadounidense inventor del sistema de control numérico,predecesor del control numérico computarizado actual. Desarrollado inicialmente para la aeronáutica, tiene usos tan variados como las máquinas herramientas digitalizadas (como el torno control numérico), los chips de computadora y los automóviles, entre otros. También desarrolló la unión adhesiva de estructuras metálicas en aeronaves, aplicado especialmente en las hélicesentre otros logros. (es)
- John T. Parsons (October 11, 1913 – April 18, 2007) pioneered numerical control (NC) for machine tools in the 1940s. These developments were done in collaboration with his Chief Engineer and Vice President of Engineering, Frank L. Stulen, who Parsons hired when he was head of the Rotary Wing Branch of the Propeller Lab at Wright-Patterson Air Force Base, in April 1946. Together, they were the first to use computer methods to solve machining problems, in particular, the accurate interpolation of the curves describing helicopter rotor blades. In 1946, "computer" still meant a punched-card operated calculation machine. In 1948, Parsons' company, "Parsons Corporation" of Traverse City, Michigan, was awarded a contract to make the challenging tapered wings for military aircraft; they won the contract because they developed the computer support to do the difficult three-dimensional interpolation for the complex shapes, as well as the 800 steps long production cycle for the wing manufacturing. IBM was one of the subcontractors, as was MIT, which took care of the servomechanisms. The latter lab boosted the developments of numerical control machining in the following decades, by developing reliable servo control in 1952 and the APT (Automatic Programmed Tool) programming language for NC machines. It was only after the servos were also steered by computers that real "numerical control" was realised. The initial developments of Parsons and Stulen were only about the calculations, and not the control: the results of the calculations were given to human operators that turned the wheels on the machine tool to generate the desired tool paths. Parsons, however, quickly saw the potential of connecting computers to the machine motors. On January 14, 1958, he received a patent for a Motor Controlled Apparatus for Positioning Machine Tool (patent number 2,820,187, filed on May 5, 1952). The initial developments of NC machines, however, had been so expensive that Parsons was fired from his own company because the funding of the MIT developments was too much for the company. Parsons was reinstated as president of the company after royalties on the patent had generated significant amounts of money. (Bendix Corporation was an initial licensee of the patent, in 1955, and eventually bought all the rights to it.) In 1985, Parsons and Stulen received the National Medal of Technology. In 1988 he received an honorary Doctor of Engineering degree from the University of Michigan. In 1993, Parsons (but not Stulen) was inducted into the National Inventors Hall of Fame for inventing numerical control. Parsons died on April 18, 2007 at the Grand Traverse Pavilions. He was 93. He had six children. (en)
- Джон Tорен Парсонс (англ. John Thoren Parsons) — американский инженер. Изобретатель числового программного управления (ЧПУ) — прототипа современных систем управления станками. (ru)
- John Thoren Parsons (13 de outubro de 1913 — 19 de abril de 2007) foi um engenheiro estadunidense. Pioneiro do Comando numérico computadorizado (CNC) para máquinas ferramentas, na década de 1940. (pt)
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- 4798 (xsd:nonNegativeInteger)
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- Carl, John, Robert, Grant, David, Meredith (en)
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- Carl and Edith Thoren (en)
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- فرانك ستولن (بالإنجليزية: John T. Parsons) (و. 1913 – 2007 م) هو مهندس من الولايات المتحدة الأمريكية . ولد في ديترويت .توفي في ترافيرس سيتي، عن عمر يناهز 94 عاماً. (ar)
- John Thoren Parsons (Detroit, Michigan, 1913ko urriaren 11 - Traverse City, Michigan, 2007ko apirilaren 18a) zenbakizko kontrol sistemaren asmatzaile ingeniari estatubatuarra izan zen, gaur egungo zenbakizko kontrolaren aitzindaria. Hasiera batean aeronautikarako garatua, tresna digitalizatuak (zenbakizko kontrolaren tornua, adibidez), konputagailu-txipak eta automobilak bezalako erabilerak ditu. Aireontzietan metalezko egituren lotura itsaskorra ere garatu zuen, batez ere helizetan, besteak beste.
* Datuak: Q6260076 (eu)
- John Thoren Parsons (11 de octubre de 1913, Detroit, Estados Unidos - 18 de abril de 2007) fue un ingeniero estadounidense inventor del sistema de control numérico,predecesor del control numérico computarizado actual. Desarrollado inicialmente para la aeronáutica, tiene usos tan variados como las máquinas herramientas digitalizadas (como el torno control numérico), los chips de computadora y los automóviles, entre otros. También desarrolló la unión adhesiva de estructuras metálicas en aeronaves, aplicado especialmente en las hélicesentre otros logros. (es)
- Джон Tорен Парсонс (англ. John Thoren Parsons) — американский инженер. Изобретатель числового программного управления (ЧПУ) — прототипа современных систем управления станками. (ru)
- John Thoren Parsons (13 de outubro de 1913 — 19 de abril de 2007) foi um engenheiro estadunidense. Pioneiro do Comando numérico computadorizado (CNC) para máquinas ferramentas, na década de 1940. (pt)
- John Thoren Parsons (* 11. Oktober 1913 in Detroit, Michigan; † 19. April 2007 in Traverse City, Michigan) war ein US-amerikanischer Erfinder numerisch gesteuerter Werkzeugmaschinen (Numerical Control). 1993 wurde er in die National Inventors Hall of Fame aufgenommen. 1985 erhielt er mit Stulen die National Medal of Technology. 1989 wurde er Ehrendoktor der University of Michigan und 1997 der Lake Superior State University. 1982 erhielt er den Founders Award der Society of Manufacturing Engineers und 1968 den ersten Joseph Marie Jacquard Award der Numerical Control Society. (de)
- John T. Parsons (October 11, 1913 – April 18, 2007) pioneered numerical control (NC) for machine tools in the 1940s. These developments were done in collaboration with his Chief Engineer and Vice President of Engineering, Frank L. Stulen, who Parsons hired when he was head of the Rotary Wing Branch of the Propeller Lab at Wright-Patterson Air Force Base, in April 1946. Together, they were the first to use computer methods to solve machining problems, in particular, the accurate interpolation of the curves describing helicopter rotor blades. In 1946, "computer" still meant a punched-card operated calculation machine. In 1948, Parsons' company, "Parsons Corporation" of Traverse City, Michigan, was awarded a contract to make the challenging tapered wings for military aircraft; they won the co (en)
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- فرانك ستولن (ar)
- John T. Parsons (de)
- John T. Parsons (es)
- John T. Parsons (eu)
- John T. Parsons (en)
- John T. Parsons (pt)
- Парсонс, Джон Торен (ru)
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