Editing 1884 in science (section)

==Technology==
* February 12 – [[Lewis Waterman]] gets his first [[patent]] for a capillary feed [[fountain pen]] in the United States.<ref>{{US patent|293545}}.</ref>
* May 16 – [[Angelo Moriondo]] of [[Turin]] is granted a [[patent]] for an [[espresso machine]].<ref>#33/256. ''Bollettino delle privative industriali del Regno d’Italia'' 2nd Series '''15''' (1884) pp. 635–655.</ref>
* June 13 – [[LaMarcus Adna Thompson]] opens the "Gravity Pleasure [[Switchback Railway]]" at [[Coney Island]], New York City.
* October – [[Hiram Stevens Maxim|Hiram Maxim]] first demonstrates the [[Maxim gun]], the first self-powered machine gun (using [[recoil operation]]).<ref>{{cite book|last=McCallum|first=Iain|title=Blood Brothers – Hiram and Hudson Maxim: Pioneers of Modern Warfare|publisher=Chatham Publishing|location=London|year=1999|isbn=978-1-86176-096-8|page=49}}</ref>
* Fall – [[Chester H. Pond]] invents the first electrical self-winding clock.<ref>{{cite book|last=Kane|first=Joseph Nathan|year=1997|title=Famous First Facts: A Record of First Happenings, Discoveries and Inventions in the United States|edition=5th|publisher=H. W. Wilson|page=[https://archive.org/details/famousfirstfacts00kane_0/page/605 605]|isbn=0824209303|url-access=registration|url=https://archive.org/details/famousfirstfacts00kane_0/page/605}}</ref>
* [[Charles Algernon Parsons|Charles Parsons]] invents the modern [[steam turbine]].<ref>{{cite web|url=http://www.universityscience.ie/pages/scientists/sci_charles_parsons.php|title=Charles Parsons (1854–1931)|access-date=2024-11-03|url-status=dead|archive-url=https://web.archive.org/web/20080110063209/http://www.universityscience.ie/pages/scientists/sci_charles_parsons.php|archive-date=2008-01-10|work=Profiles of Scientists from Irish Universities|via=Wayback Machine}}</ref>
* [[Charles Renard]] and [[Arthur Constantin Krebs]] make a fully controllable free-flight in [[French Army]] airship ''[[La France (airship)|La France]]'' with an electric motor.<ref>{{cite book|last1=Winter|first1=Lumen|last2=Degner|first2=Glenn|title=Minute Epics of Flight|location=New York|publisher=Grosset & Dunlap|year=1933|pages=49–50}}</ref>
* Hungarian engineers [[Károly Zipernowsky]], [[Ottó Bláthy]] and [[Miksa Déri]] invent the closed core high efficiency [[transformer]] and [[Alternating current|AC]] parallel power distribution.<ref>{{Cite journal|last=Guarnieri|first=M.|year=2013|title=Who Invented the Transformer?|journal=IEEE Industrial Electronics Magazine|volume=7|issue=4|pages=56–59|doi= 10.1109/MIE.2013.2283834}}</ref>
* [[Thomas Parker (inventor)|Thomas Parker]] builds a practical production [[electric car]] in Wolverhampton (England) using his own specially designed high-capacity rechargeable batteries.
* Mexican General [[Manuel Mondragón]] designs an early form of the [[Mondragón rifle]], the world's first automatic rifle.