Clau anglesa: diferència entre les revisions

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A l’enginyer anglès Richard Clyburn se li atribueix la invenció d’una clau regulable el 1842. <ref name = "murray1845"> {{cite book | first = John | last = Murray | title = The Journal of the Royal Agricultural Society of England | url = https ://archive.org/details/journalroyalagr03murrgoog | year = 1845 | pages = [https://archive.org/details/journalroyalagr03murrgoog/page/n430 388] -}} </ref> Un altre enginyer anglès, [[Edwin Beard Budding]], també se li atribueix la invenció. <Ref name = "LloydMitchinson2012"> {{cite book | author1 = John Lloyd | author2 = John Mitchinson | author3 = James Harkin | title = 1,227 QI Facts To Blow Your Socks Off | url = https://books.google.com/books? id = uZaYmyvrY34C & pg = PT44 | date = 30 d'octubre de 2012 | publisher = Faber & Faber | isbn = 978-0-571-29795-5 | pages = 44–}} </ref> <ref name = "DayMcNeil2002"> {{cite book | author1 = Lance Day | author2 = Ian McNeil | title = Diccionari biogràfic d’història de la tecnologia | url = https://books.google.com/books ? id = FmoTeX3aGl4C & pg = PT206 | data = 11 de setembre de 2002 | publisher = Routledge | isbn = 978-1-13 4-65019-4 | pages = 206–}} </ref> Es van seguir millores: el 22 de setembre de 1885, Enoch Harris va rebre la patent dels EUA 326868 l'amplada de la mandíbula i l'angle de les nanses per ajustar i bloquejar. L'empresa sueca [[Bahco]] atribueix un disseny millorat, el 1891 o el 1892, a l'inventor suec [[Johan Petter Johansson]] <ref name = bahco> {{Cite web | url = http://www.bahco.com/ca/about/| title = Qui som {{!}} BAHCO | website = www.bahco.com | access-date = 2016-11-04}} </ref> <ref name = "bahco"/> qui a 1892 va rebre una [[patent]]. <ref> {{cite web | url = http://www.datamp.org/patents/displayPatent.php? Pn = 4066 & id = 57764 | title = SE Patent: SE-4.066 Stallbar skrufnyckel | last = Johansson | first = Johan Petter | date = 11 de maig de 1892 | website = Directory of American Tool and Machinery Patents}} </ref> <ref name = "Bergh2014"> {{cite book | author = Andreas Bergh | title = Sweden and the Revival of the Capitalist Welfare State | url = https://books.google.com/books? id = 60kjBAAAQBAJ & pg = PA11 | date = 31 de juliol de 2014 | publisher = Edward Elgar Publishing | isbn = 978-1 -78347-350-2 | pages = 11–}} </ref> Al Canadà i als Estats Units, l'eina es coneix com una clau de mitja lluna o una clau ajustable. <Ref name = "Corporation1999"> {{cite book | autor = Bonnier Corporation | tit le = Popular Science | url = https://books.google.com/books? id = tDxFb0FTMEoC & pg = PA21 | date = October 1999 | publisher = Bonnier Corporation | pages = 21– | issn = 0161-7370}} </ref > A Austràlia es coneix com a "clau de desplaçament", generalment abreujada a "shifter". <ref> {{cite web | url = https://en.wiktionary.org/wiki/shifter | date = June 2019 | title = Shifter}} </ref>
 
== Galeria ==
<gallery class="center">
 
File:Franz Werkz.jpg|A [[French key]]
 
File:Adjustable wrench keyway.jpg|The "keyway" of an adjustable wrench
 
File:Chrome Vanadium Adjustable Wrench.jpg|[[Chrome vanadium]] adjustable wrench
 
File:Cresent brand 8-inch adjustable wrench.jpg|Adjustable wrench for [[List_of_screw_drives#Hex|hexagonal ("hex") fasteners]]
 
</gallery>
 
== Referències ==