Editing 1830 in science (section)

==Technology==
* July 13 – [[John Ruggles]] is granted [[United States]] [[patent]] [https://patents.google.com/patent/US1 No. 1], for applying [[rack railway]] equipment to the "Locomotive steam-engine for rail and other roads".
* August 31 – [[Edwin Beard Budding|Edwin Budding]] is granted a [[United Kingdom]] patent for the [[lawnmower]].
* [[Aeneas Coffey]] is granted a United Kingdom patent for an improved [[column still]].
* [[Eaton Hodgkinson]] publishes his pioneering paper on the optimum [[Cross section (geometry)|cross section]] for [[cast iron]] [[beam (structure)|structural beam]]s.<ref>"Theoretical and Experimental Researches to Ascertain the strength and best forms of Iron beams". ''Memoirs of the [[Manchester Literary and Philosophical Society]]'' 2nd ser. '''5''':407-544.</ref>
* Stephen H. Long designs the [[Truss bridge#Long truss|Long truss]] wooden bridge.