Editing 1841 in science (section)

==Technology==
* February – [[Henry Fox Talbot|H. Fox Talbot]] obtains a patent in the [[United Kingdom of Great Britain and Ireland|United Kingdom]] for the [[calotype]] process in photography.<ref>{{cite book|title=The Hutchinson Factfinder|publisher=Helicon|year=1999|isbn= 1-85986-000-1}}</ref>
* April 16 – [[Loring Coes]] patents the screw type [[wrench]] commonly known as the [[monkey wrench]] in the [[United States]].
* April 24 – [[Squire Whipple]] patents the iron [[tied-arch bridge|bowstring arch]] through [[truss bridge]] in the United States.<ref>{{US patent|2064}}</ref>
* Draughtsman William Howe and pattern-maker William Williams of [[Robert Stephenson and Company]] in [[Newcastle upon Tyne]] originate [[Stephenson valve gear]] for the [[steam locomotive]].
* [[Joseph Whitworth]] introduces the [[British Standard Whitworth]] system of [[screw thread]]s in his paper ''On a Uniform System of Screw Threads''.
* [[United States|American]] artist John G. Rand invents the collapsible [[zinc]] [[oil paint]] [[Tube (container)|tube]], marketed by [[Winsor & Newton]] of [[London]].<ref>{{cite web|title=Painting Inventions|url=http://www.humanitiesweb.org/human.php?s=g&p=a&a=i&ID=980|work=Humanities Web|date=2001-01-06|accessdate=2011-08-07}}</ref>