17th-century mentor spring in Lisbon Carriage Museum The earliest regarded leaf springs started showing up on carriages in France during the mid-seventeenth century in the form of the two-element elbow spring (since the illustrated instance from Lisbon), and later migrated to England and Germany,[six] appearing on the carriages of the https://archertlarf.atualblog.com/41796694/detailed-notes-on-leaf-spring