Who invented it?
https://www.google.com/search?q=who+invented+thd+volute+spring&oq=who+invented+thd+volute+spring&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCTExNzY4ajBqNKgCAbACAQ&client=ms-android-motorola-rvo3&sourceid=chrome-mobile&ie=UTF-8#lfId=ChxjMe
My money in on Mr. Baillie.
"Other Potential Developers: A 1856 document mentions that Mr. Baillie, a locomotive superintendent of the Central Hungarian Railway, also claimed to have developed a similar spring."
Wikipedia.
© 2026 Thomas Paul Murphy