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Original Documents on the History of CalculatorsHTML versions of original documents on the history of calculators
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Original Documents on the History of Calculators | ajmdeman.awardspace.info Reviews
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HTML versions of original documents on the history of calculators
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Hamann: German Patent 194527 (March 23, 1905)
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Ausgegeben den 6. Februar 1908. Christel Hamann in Friedenau b. Berlin. Rechenmaschine mit radial angeordneten, in einer Ebene liegenden Schalt- und Zählwerksachsen, die durch ein gemeinsames Element bewegt werden. Patentiert im Deutschen Reiche vom 23. März 1905 ab. In den beiliegenden Zeichnungen ist die Maschine beispielsweise in einer Ausführungsform dargestellt. Zeigt die Maschine in Seitenansicht zum Gebrauch auf einem Ständer befestigt, von dem einzelne Teile in Schnitt dargestellt sind. Ist ein H...
German Patent 64925; October 14, 1892
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Ausgegeben den 14. Oktober 1892. WT Odhner in St. Petersburg. Patentirt im Deutschen Reiche vom 13. November 1891 ab. Gegenstand der vorliegenden Erfindung bildet eine abgeänderte Ausführungsform der durch die Patentschrift. Bekannt gewordenen Rechenmaschine, und der Zweck derselben ist die Beseitigung der letzterer anhaftenden Mängel, welche der allgemeineren Einführung der Maschine bisher im Wege standen. Diese Mängel bestehen:. Welche zum Zählen der Umdrehungen der erwähnten Zählräder dienen. Um eine ...
US Patent 2,533,372; Dec. 12, 1950
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Patented Dec. 12, 1950. UNITED STATES PATENT OFFICE. Curt Herzstark, Mauren, Liechtenstein. Application June 20, 1949, Serial No. 100,126. In Austria May 15, 1946. Claims. (Cl. 235-144). A curved toothed rack of the zeroizer is capable of being moved into the range of zeroizing wheels provided with gaps by the omission of one or more teeth, which zeroizing wheels, together with the numeral wheels, are successively brought to the zero position during the rotation of the zeroizer. In the further extension ...
Figures for Swedish Patent 3264; Sept. 26, 1890
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Deutsches Patentschrift 747073
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Erteilt auf Grund der Verordnung vom 12. Mai 1943. RGBl II S.150). KLASSE 42m GRUPPE 12. Curt Herzstark in Wien. Ist als Erfinder genannt worden. Curt Herzstark in Wien. Rechenmaschine mit einer einzigen von Einstellrädchen umgebenen Staffelwalze. Patentiert im Deutschen Reich vom 19. August 1938 an. Patenterteilung bekanntgemacht am 27. Januar 1944. In der Zeichnung ist die erfindungsgemäß ausgebildete Rechenmaschine in einer beispielsweisen Ausführungsform in den Abb. 1. Zeigt die Staffelwalze mit eine...
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Jaap's Mechanical Calculators Page
http://www.jaapsch.net/mechcalc/index.htm
Jaap's Mechanical Calculators Page. This page is devoted to my very small collection of mechanical calculators. If you have comments, you can contact me (Jaap Scherphuis) at mechcalc a t jaapsch d o t net. This is an Aderes column adder, without serial number, unknown year of production. It is in excellent working condition. More information on the Aderes. This is a Comptometer, 10-column Model J, serial number J314420, from about 1934. The Comptometer was invented in 1886 by Dorr E. Felt, and made b...
Calculating History
https://sites.google.com/site/calculatinghistory
An early IT disaster. Complex Number Slide Rules. Edited by Andries de Man. Edited by Andries de Man. Edited by Andries de Man. Welcome to this collection of papers I wrote on historical calculating machines and mathematical instruments. Most of them have appeared in Dutch in the "Mededelingen en Informatie voor Rekenlinialenverzamelaars" ( MIR. You might also be interested in original documents on calculating history. A wikipedia for calculating devices, or the Oughtred Society.
Links
http://www.vintage-calculators.nl/page37.html
Wim owns a lot of very nice and some very rare calculators. They all come with a description and lots of perfect photo’s, also of the internals of each machine. For some there is a video. His site also contains detailed information regarding the many different technologies used in mechanical calculators. Contains a large data base of mechanical calculators. Available in four languages. Contains a large data base of vintage electronic calculators. Contains a large data base of electronic calculators.
Links naar andere Web Sites over rekenlinialen
http://www.rekeninstrumenten.nl/links.htm
Links naar andere Websites. Links naar grote verzamelingen. Links naar websites van KRING-leden. Links naar individuele verzamelaars. Links naar thematische onderwerpen. Links naar commerciële sites. Het korte internet adres van de website van de Nederlandse Kring. De website van de Amerikaanse Oughtred Society. De website van de Engelse UKSRC groep. De website van de Duitse RST groep. Links naar grote verzamelingen. Links naar websites van KRING-leden. My collection has more than a hundred mechanical ca...
Polish Contributions to Computing - Links
http://chc60.fgcu.edu/EN/links.aspx
IEEE Computer Society's Computing History Competition CHC60. History of Computing around the World. Computer History Museum in Mountain View. Former Computer Museum in Boston. Konrad Zuse Internet Archive. History of Calculators (Walter Szrek Collection). JAN Lee's The History of Computing. History of Computing Information. Chronology of Personal Computers. Museum of Arithmometers (in French). Mathematisches Maschinen-Museum (in German). Virtual Computer Museum (in Russian). Museum of HP Calculators.
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Original Documents on the History of Calculators
Original Documents on the History of Calculators. This site contains HTML-versions of some original documents related to the early history of calculators. For more information on the history of calculators, see Erez Kaplan's Calculating Machines. Section of Dave Hicks' Museum of HP Calculators. And James Redin's Vintage Calculators. And their lists of links) ormy essays on calculating history. If you are interested in the more recent history of computers, check out the document collections of Ed Thelen.
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