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In 1676 British physicist [[Robert Hooke]] postulated [[Hooke's law]], which states that the force a spring exerts is proportional to its extension.
On March 8,1850, John Evans, Founder of [https://springcompany.com/ John Evans' Sons, Incorporated], opened his business in New Haven, Connecticut, manufacturing flat springs for carriages and other vehicles, as well as the machinery to manufacture the springs. Evans was a Welsh blacksmith and springmaker who emigrated to the United States in 1847, John Evans' Sons became "America's oldest springmaker" which continues to operate today.<ref>{{Citation |last=Fawcett |first=W. Peyton |title=History of the Spring Industry |date=1983 |pages=28 |url=https://www.americanabookstore.com/pages/books/20947/w-peyton-fawcet/history-of-the-spring-industry-in-the-united-states-and-canada |access-date= |publisher=Spring Manufacturers Insitute, Inc.}}</ref>
== Types ==
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