Non-coiled springs were used throughout human history, e.g. the bow (and arrow), a tree branch for a catapult. In the Bronze Age more sophisticated spring devices were used, as shown by the spread of tweezers in many cultures. Ctesibius of Alexandria developed a method for making bronze with spring-like characteristics by producing an alloy of bronze with an increased proportion of tin, and then hardening it by hammering after it was cast.
Coiled springs appeared early in the 15th century, in door locks. The first spring powered-clocks appeared in that century and evolved into the first large watches by the 16th century.Later, in the late 1800’s, coiled compression springs were developed and used in buggies and carriages.
There’s much more to come about spring history. Please check back with us.