About: British Tabulating Machine Company

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The British Tabulating Machine Company (BTM) was a firm which manufactured and sold Hollerith unit record equipment and other data-processing equipment. During World War II, BTM constructed some 200 "bombes", machines used at Bletchley Park to break the German Enigma machine ciphers. Annual revenues were £6K in 1915, £122K in 1925, and £170K in 1937. In 1916 there were 45 staff; this increased to 132 in 1922, 326 in 1929 and 1,225 in 1939.

Attributes	Values
rdf:type	Thing company yago:WikicatCompaniesEstablishedIn1902 yago:Abstraction100002137 yago:Company108058098 yago:Group100031264 yago:Institution108053576 yago:Organization108008335 yago:YagoLegalActor yago:YagoLegalActorGeo yago:YagoPermanentlyLocatedEntity yago:SocialGroup107950920
rdfs:label	British Tabulating Machine Company (de) British Tabulating Machine Company (en)
rdfs:comment	Die British Tabulating Machine Company (kurz: BTM; deutsch „Britische Tabelliermaschinen-Gesellschaft“) war ein britisches Unternehmen zur Herstellung von Tabelliermaschinen. Während des Zweiten Weltkriegs spielte es eine bedeutende Rolle im Zusammenhang mit dem erfolgreichen britischen Bruch der von den deutschen Militärs zur Verschlüsselung ihres geheimen Nachrichtenverkehrs eingesetzten Rotor-Schlüsselmaschine Enigma. Die von den Codebreakers im englischen Bletchley Park (B.P.) hierzu eingesetzte elektromechanische Maschine, genannt die Turing-Bombe, wurde durch die BTM hergestellt. (de) The British Tabulating Machine Company (BTM) was a firm which manufactured and sold Hollerith unit record equipment and other data-processing equipment. During World War II, BTM constructed some 200 "bombes", machines used at Bletchley Park to break the German Enigma machine ciphers. Annual revenues were £6K in 1915, £122K in 1925, and £170K in 1937. In 1916 there were 45 staff; this increased to 132 in 1922, 326 in 1929 and 1,225 in 1939. (en)
dct:subject	1959 disestablishments in England British companies disestablished in 1959 Manufacturing companies established in 1902 International Computers Limited Defunct manufacturing companies of the United Kingdom 1902 establishments in England British companies established in 1902 Cryptanalytic devices
Wikipage page ID	2540506 (xsd:integer)
Wikipage revision ID	1117211021 (xsd:integer)
Link from a Wikipage to another Wikipage	Encryption Bletchley Park Bombe Hollerith Hollerith Electronic Computer International Computers and Tabulators Enigma machine Fujitsu Letchworth 1959 disestablishments in England British companies disestablished in 1959 John Harper (computer engineer) Alan Turing Manufacturing companies established in 1902 International Computers Limited Herman Hollerith Hertfordshire International Computers Limited Defunct manufacturing companies of the United Kingdom 1902 establishments in England British companies established in 1902 Dora Metcalf Cryptanalytic devices IBM World War II Powers-Samas Unit record equipment Harold 'Doc' Keen Tabulating Machine Company
Link from a Wikipage to an external page	http://www.hertfordshirelife.co.uk/out-about/places/decoding_the_enigma_in_letchworth_1_1630801 http://www.jharper.demon.co.uk/btm1.htm http://www.tech.port.ac.uk/staffweb/andersod/CCS/resurrectionarticle%3FArticle=1-7 http://www.gracesguide.co.uk/British_Tabulating_Machine_Co https://web.archive.org/web/20131204202741/http:/www.jharper.demon.co.uk/bombe1.htm http://www.vintage-icl-computers.com/icl2arr
sameAs	British Tabulating Machine Company British Tabulating Machine Company British Tabulating Machine Company British Tabulating Machine Company British Tabulating Machine Company British Tabulating Machine Company British Tabulating Machine Company
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bot	InternetArchiveBot (en)
date	November 2016 (en)
fix-attempted	yes (en)
has abstract	The British Tabulating Machine Company (BTM) was a firm which manufactured and sold Hollerith unit record equipment and other data-processing equipment. During World War II, BTM constructed some 200 "bombes", machines used at Bletchley Park to break the German Enigma machine ciphers. The company was formed in 1902 as The Tabulator Limited, after Robert Porter obtained the rights to sell Herman Hollerith's patented machines from the US Tabulating Machine Company (later to become IBM). By 1909, the company had been renamed the "British Tabulating Machine Company Limited". In 1920, the company moved from London to Letchworth, Hertfordshire; it was also at this point that it started manufacturing its own machines, rather than simply reselling Hollerith equipment. Annual revenues were £6K in 1915, £122K in 1925, and £170K in 1937. In 1916 there were 45 staff; this increased to 132 in 1922, 326 in 1929 and 1,225 in 1939. In return for the exclusive right to market Hollerith equipment in Britain and the Empire (excluding Canada), BTM paid 25% of its revenues to the American company by way of royalties. This became an ever-increasing burden as the years progressed; BTM attempted to renegotiate the agreement on several occasions, but it was only finally terminated in 1948. During World War II, BTM was called upon to design and manufacture a machine to assist breaking the German Enigma machine ciphers. This machine, known as a bombe, was initially conceived by Alan Turing, but the actual machine was designed by BTM chief engineer Harold 'Doc' Keen, who had led the company's engineering department throughout the 1930s. The project was codenamed "CANTAB". The project was managed by computing pioneer Dora Metcalf until 1942. By the end of the European war, over two hundred bombes had been built and installed. (en) Die British Tabulating Machine Company (kurz: BTM; deutsch „Britische Tabelliermaschinen-Gesellschaft“) war ein britisches Unternehmen zur Herstellung von Tabelliermaschinen. Während des Zweiten Weltkriegs spielte es eine bedeutende Rolle im Zusammenhang mit dem erfolgreichen britischen Bruch der von den deutschen Militärs zur Verschlüsselung ihres geheimen Nachrichtenverkehrs eingesetzten Rotor-Schlüsselmaschine Enigma. Die von den Codebreakers im englischen Bletchley Park (B.P.) hierzu eingesetzte elektromechanische Maschine, genannt die Turing-Bombe, wurde durch die BTM hergestellt. (de)
gold:hypernym	Firm
schema:sameAs	British Tabulating Machine Company
prov:wasDerivedFrom	wikipedia-en:British_Tabulating_Machine_Company?oldid=1117211021&ns=0
page length (characters) of wiki page	5791 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:British_Tabulating_Machine_Company
is Link from a Wikipage to another Wikipage of	BTM Punched card Bletchley Park Bombe History of computing hardware Hollerith Electronic Computer John R. Womersley Ultra International Computers and Tabulators List of people associated with Bletchley Park Cryptanalysis of the Enigma Letchworth Harold Keen Harry Dagnall C. E. Wynn-Williams

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