17th-century coach spring in Lisbon Carriage Museum The earliest identified leaf springs started showing up on carriages in France in the mid-seventeenth century in the form of The 2-part elbow spring (given that the illustrated example from Lisbon), and later on migrated to England and Germany,[6] showing about the carriages https://garrettcpyek.pointblog.net/not-known-facts-about-trailer-jack-80622155