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en.wikipedia.org/wiki/Spring_(device)

A spring is an elastic object that stores mechanical energy.Springs are typically made of spring steel.There are many spring designs. In everyday use, the term often refers to coil springs.. When a conventional spring, without stiffness variability features, is compressed or stretched from its resting position, it exerts an opposing force approximately proportional to its change in length ...

www.reference.com/history/invented-springs-c21c5965bd66c14e

R. Tradwell invented the first coiled spring in 1763, according to Coiling Technologies, Inc. However, non-coiled springs have been in use since the days of the bow and arrow. Spring technology has been around since the 1300s when people used chariots as transportation, states Coiling Technologies.

en.wikipedia.org/wiki/Leaf_spring

A leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles.Originally called a laminated or carriage spring, and sometimes referred to as a semi-elliptical spring or cart spring, it is one of the oldest forms of springing, appearing on carriages in England after 1750 and from there migrating to France and Germany.

www.hagens.com/en/about-the-hagens-spring-group/the-history-of-the-spring.aspx

The coil spring is probably the greatest step in the history of the spring In 1763 R. Tradwell secured a patent for the invention of the first version of the coil spring. This was a great step in the history of the spring, as the coil spring - in comparison to the thus far used leaf springs - did not require the same maintenance.

www.thoughtco.com/spring-coils-physics-and-workings-4075522

Robert Hooke was perhaps the single greatest experimental scientist of the 17 th century, responsible for developing a concept hundreds of years ago that would result in coil springs that are still used widely today.

www.answers.com/Q/When_were_leaf_springs_invented

When were leaf springs invented? The venerable leaf spring, which some manufacturers still use in rear suspensions today, was invented by Obadiah Elliot of London in 1804. He simply piled one ...

www.answers.com/Q/Who_invented_springs

Answers.com is the place to go to get the answers you need and to ask the questions you want

www.hotsprings.org/pages/history

Hot Springs Reservation was essentially America’s first national park, predating Yellowstone National Park by 40 years. In just a decade, the area changed from a rough frontier town to an elegant spa city centered on a row of attractive Victorian-style bathhouses, the last ones completed in 1888.

www.spruceaustin.com/uncategorized/history-of-the-coil-spring

Beginning in the late eighteenth century, steel coil springs made their debut in the upholstery world as a padding material for seating. Initially, poor tying techniques and the high cost of steel made springs an impractical upholstery material. Many times, upholsterers would cover over untied coils.

www.formula1-dictionary.net/pneumatic_valve_actuation.html

Pneumatic valve springs are metal bellows filled with compressed air occupying roughly the same space of metal springs used to close valves in high-speed internal combustion engines. This system was introduced in the mid-1980s in Renault turbocharged RVS-9 1.5 litre Formula 1 engines.