Editing 1784 in science (section)

==Technology==
* April 28 – [[James Watt]] receives a British [[patent]] for his [[parallel motion]] and other improvements to the [[steam engine]].<ref>No. 1432.</ref>
* June 4 – [[Élisabeth Thible]] becomes the first woman passenger in a [[hot air balloon|hot-air balloon]], at [[Lyon]], [[France]].<ref>''[[Gazette d'Amsterdam]]'' 25 June 1784; ''[[Journal des sçavans]]'' November 1784 pp. 760-762.</ref>
* August 21 – [[Joseph Bramah]] receives his first [[Lock (security device)|lock]] patent in [[London]].
* Rev. Dr. [[Edmund Cartwright]] designs his first [[power loom]] in England.
* [[Henry Cort]] of [[Funtley]], [[England]], applies the coal-fired [[reverbatory furnace]] to the [[Puddling (metallurgy)|puddling]] process for conversion of [[cast iron|cast]] to [[wrought iron]].<ref>{{cite book|first=W. K. V.|last=Gales|title=Ironworking|location=Princes Risborough|publisher=Shire|year=1981|isbn=0-85263-546-X|page=8}}</ref>