Editing 1891 in science (section)

==Technology==
* March 10 – [[Almon Brown Strowger|Almon B. Strowger]], an undertaker in [[Topeka, Kansas]], is granted a [[patent]] in the United States<ref>{{Cite patent|country=US|number=447918|pubdate=1891-03-10|title=Automatic telephone-exchange|inventor1-last=Strowger|inventor1-first=Almon B.}}</ref> for an [[automatic telephone exchange]] using the [[Strowger switch]].<ref>{{cite journal|first=Roger B. |last=Hill |title=The Early Years of the Strowger System |url=http://www.privateline.com/Switching/EarlyYears.html |journal=Bell Laboratories Record |volume=31 |issue=3 |pages=95–103 |access-date=2011-11-03 |date=March 1953 |url-status=dead |archive-url=https://web.archive.org/web/20111025123622/http://www.privateline.com/Switching/EarlyYears.html |archive-date=2011-10-25 }}</ref>
* May 20 – First public demonstration of the [[Kinetograph]] moving picture system developed by [[W. K. L. Dickson]] under the direction of [[Thomas Alva Edison]], a showing of the film known as ''[[Dickson Greeting]]''. Edison files patents on the camera and peephole viewer on August 24.<ref>{{cite book|last=Mannoni|first=Laurent|author2=Campagnoni, Donata Pesenti|author3= Robinson, David|year=1996|title=Light and Movement: Incunabula of the Motion Picture, 1420–1896|location=London|publisher=BFI|isbn=88-86155-05-0}}</ref>
* [[Crompton Parkinson|Crompton & Co.]] introduce the [[Kettle#Electric kettle|electric kettle]], in the United Kingdom.
* [[Michelin]] patent the removable pneumatic [[bicycle tire]].<ref>{{cite book|first1=John|last1=Lloyd|author-link=John Lloyd (writer)|first2=John|last2=Mitchinson|title=The Second Book of General Ignorance|location=London|publisher=Faber|year=2010|isbn=978-0-571-26965-5|page=163}}</ref>
* [[Panhard#History|Panhard et Levassor]] produce the first ''Système Panhard'' [[automobile layout]], consisting of four wheels with [[front-engine, rear-wheel drive layout|front-engine, rear-wheel drive]] and a sliding-gear [[Transmission (mechanics)|transmission]], designed by [[Émile Levassor]].<ref>{{cite book|editor=Georgano, G. N. |title=Complete Encyclopedia of Motorcars|year=1982|publisher=Ebury Press|location=London|isbn=0-85223-234-9}}</ref>
* [[William Le Baron Jenney]] develops the construction of [[steel frame]] [[skyscraper]]s in [[Chicago]] with the [[Ludington Building|Ludington]], [[Manhattan Building (Chicago, Illinois)|Manhattan]] and [[Second Leiter Building]]s.
* The modern [[taximeter]] is invented by [[Friedrich Wilhelm Gustav Bruhn]] in Germany.