Dating rule son
Henry took a personal interest in the company's fledgling slide rule line and with the help of an employee and German immigrant, Fritz Hammelburger, designed an innovative process for making inexpensive slide rules. Though based on the expired patent of Dempster's Rota Rule, last built in 1948, Boykin improved the slide rule with better materials and scale arrangements.
One change was dividing the scales using decimal degrees rather than minutes and seconds. He owned Boykin Electro Tech and in 1991 founded the Whitby/Brewer (Yacht) Association. Author of many early slide rule instruction manuals for the Polyphase (1924) and Polyphase Duplex (1938, 1944, 1954) slide rules for the Keuffel & Esser Company. Australian historian of computing who became a world authority on many aspects of early computing and was one of the most avid collectors of mechanical calculators.
His main academic interest was the history of computers. Green - (1920-2014) - Professor Emeritus Univeristy of Florida. Before joining the UF faculty, Green had been a gunnery evaluation specialist and an operations analyst for the Army Air Force during World War II.
Many of specimens from his collection can be seen at the Powerhouse Museum. Professor of (Civil) Engineering at the Queen's College (now University of) Belfast in Northern Ireland. He had developed specialized slide rules to solve technical issues faced by B-29 bombing raids, leading to his participation in one of the most dangerous B-29 missions that found the missing Japanese fleet, including the battleship Yamato.
This gallery honors the manufacturers, authors, inventors and entrepenuers, of slide rules in the past and active collectors, webmasters and commercial dealers of slide rules who help keep these works of mathematical and scientific art from disappearing.
And mostly, its just to put a face to all those familiar names we've been communicating with all these years.
Bürgi was also a major contributor to prosthaphaeresis, a technique for computing products quickly using trigonometric identities, which predated logarithms. It was a period marked by emphasis on science-oriented technology, a diversification of product lines, a strengthening of market position in the united States and overseas. Trevor bought his first slide rule, an Aristo Scholar,to use at school, and his second one about 2007. Science; Farm Management; Dunelm) and Master's (Economics; UNE) degrees. Became president of Manufacture Francais de Compas of Ligny en Barrois, in France. With his original design and later improvements, Coggeshall's slide rule brought the tool its first practical use outside of mathematical study. Long time avid researcher and collector of slide rules. The IWA System WERN disks are his favorite as he had met both Carl and George Wern, the two brothers that created this tool in the mid 1950's. Eshbach's diligence in organizing and administering the program was most evident during the Depression years of 1932 to 1937. Gerber, who held nearly 650 patents, was awarded the National Medal of Technology in 1994, given to him by U. The story behind his invention The Inventor's Dilemma: The Remarkable Life of H. Although Napier conceived of the logarithm allowing multiplication or division to be accomplished by addition or subtraction, Napier relied on look up tables. One side of the slide rule contained engineering formulas involved with performance of a pump while the other side contained everything necessary for pipeline and production calculations. The works were extended in the 1960s to provide an enlarged engineering department for the manufacture of photocopying machines and a warehouse for drawing office supplies. Son of Thomas Knox Hannyngton of Dungannon and father of John Child Hannyngton. His best known and largest work is a Table of Haversines, Natural and Logarithmic, used in computing distances for the Nautical Almanac. His amateur radio call, W2OTS, dates from March,1946. Maurice Leslie Hartung - (1902-1993) United States. Studied Mathematics at Cornell College, Iowa, and in September 1926 was accepted as a member of the American Mathematical Society.
The only other Maker that used this technique was Thomas Heath. Member of the Oughtred Society, Graduated with a Electro-Technology Diploma from the SA Institute of Technology in 1970, using a slide rule (Thornton P221) and with a Engineering Degree in 1979 using a electronic calculator (HP25). The initial furniture was all made of wood, but it was not long before steel furniture was added to the range. After the war he founded the Amsterdam Trade association in 1947. Ahrend were no instrument makers as can be seen in the ISRM galleries where rebranded Ahrend slide rules were made in Japan and Germany. Publications about mechanical calculators found at Museum mechanischer Rechenmaschinen and some about slide rules. Slide rules were mentioned in many of his futuristic 'Robot' novels.
There is evidence that Bürgi arrived at his invention as early as 1588, six years before Napier began work on the same idea. Alfred was a grandson of the K&E founder (His mother was Ottilie Keuffel Busch). Was captivated by the magic of the slide rule in grade school. and was a founder of Charvoz, Inc in 1939 and with his wife Angele, were partners with another family, the Gottheimer's, in the Roos Company which manufactured slide rules in New York and distributed re-branded drafting tools made by Ecobra throughout the United States. Henry Coggeshall - Inventor of the Coggeshall slide rule in 1677. GKE Elektronik AB (Gunnar's own company) 1978 onwards. Loren Thompson) most of the modern post-WWII era Dietzgen Instruction manuals. Its remarkable length permitted a high level of precision in calculations; calculations could be made to 4 or 5 significant digits. Stanley continued its production until 1972, as until the introduction of the electronic calculator, it was preferred by astronomers and scientists. He sold his existing products by day, and invented new ones at night. He is the coauthor of a number of study guides for standardized tests such as the GED, CLEP and MCAT. Edmund Gunter - London, England (1581 - 1626), Created a number line (the Gunter Scale) in 1620, in which the positions of numbers were proportional to their logs which graphically represented the work of John Napier. Hagler, who's family ran Georgia Iron Works, Grovetown, Ga., conceived and designed the GIW Hydraulic Slide Rule. Before its invention, each engineer in the engineering department had a large, thick notebook with about 100 pages of graphs. The company considered its Calculex circular calculator to be about the cheapest and most serviceable model available. He took an active part in research and development and patented photographic ammonia developing apparatus. He had recently been appointed chairman of the company. Website John Caulfield Hannyngton, Major General - (1807-1886) Tyrone, UK. His projects included, the Trieste bathyscaphe, NR-1 nuclear research submarine, vessel traffic systems for the Port of Rotterdam, the Suez Canal and the Straits of Malacca, the Coast Guard's National Data Buoy Project and submarine and ship simulators for the Navy and the U. From 1982 to 1996, he was involved in information and telecommunications technology applications for the municipal bond industry.
By delaying the publication of his work to 1620, Bürgi lost his claim for priority in historic discovery. K&E experienced its most rapid growth under his presidency. Used a 5 inch FC addiator model through RAF radio school, Bachelor's ( Agric. André's wife, and business partner was Angele Charvoz (1900-1982, died Clifton, New Jersey). It was intended to facilitate measuring the dimensions, superficies, and solidity of timber. ASEA Vasteras, Sweden/Paris, France (now ABB) 1962 - 1964. Gunner and his son work together in GKE doing analogue/digital equipment for steel and paper works. Began collecting after retirement and now has over 400 slide rules. Began as an assistant professor of electrical engineering at Lehigh University, then Eshbach was hired to aid in student recruitment and placement for AT&T and MIT (1925). The principal manufacturer of these slide rules was W. Stanley Hall of London, who possessed the necessary dividing engine for such an undertaking. It was the first product to launch the Gerber Scientific Instrument Co. Several of his inventions are on display at the Smithsonian Institution. (Yale University Press, 2015) Werner Girbardt - Greifswald, Germany. Shares the 2009 OS Award with Werner Schmidt for organising four international science and technology symposia at the Ernst Moritz Arndt University in Greifswald, for setting up the Rechentechnische Sammlung museum collection which includes an information rich on-line catalogue of the slide rules and other calculating instruments from the collection. Louis has helped with hosting past East Coast Meetings of the Society. In 1623 he published a description of this scale that is composed of two scales of the logarithms from I to 10 placed end to end. The slide rule incorporated many hydraulic pump and pipeline formulas. John Lionel Halden - ( - 1966) Manchester, England. Under his guidance, the company continued to prosper. The firm continued until it was taken over by the Ozalid Group at the beginning of 1969. Inventor of the Hannyngton Slide Rule used in astronomical computations. Since 2000 he has been a volunteer in the flight simulation group of the Cradle of Aviation Museum.
He started collecting slide rules nearly 20 years ago and joined the Oughtred Society in 1993 becoming an Oughtred Society Award winner in 1996. It was produced briefly by K&E and marketed by Edward E. The key collection is the early nixie tube desktop calculators, early pocket calculators of the brands Hewlett Packard, Texas Instruments, Litronix and the russian brand Elektronika. Bernard manufactured the Boykin Rota Rule from his home in Ruxton, Maryland.
Besides those brands I also search for calculators of calculating devices, which are special or are the start of a new era in calculating" Henry Alison Blundell - (1896-1990) Grandson of Henry Blundell, the founder of the family business, Blundel Brothers Limited. His design was started in 1957, with manufacturing commencing in the early 60's.