The First Coiled Spring

R. Tradwell filed a Brittish patent, number 792, for the first coiled spring back in 1763. The word coil meant to wind cylindrically or spirally. This new patent was considered a step up from the leaf spring which had to be separated and lubricated often or it was very squeaky. The new coiled spring didn’t have to be spread apart.

In the year 1857, the steel coil spring was officially invented and was often used in the construction of chair seats.
Ever since the inventions of these coil springs, springs have been used in everything from shoes to trampolines. They helped make the car industry what it is today. Springs are used in every type of machinery and they really do help make the world go around.

Springs are in general used as energy storage and conversion devices. 

When compressed or elongated, springs absorb energy (convert worked up energy into potential energy). This energy is used for various tasks (reconversion of potential energy into other forms of energy). 

For example- in children toys, where we rotate the spring to store energy into spring) and then when released the car starts running (conversion into kinetic energy).

Springs are made of elastic materials such as steel, iron etc.