17th-century coach spring in Lisbon Carriage Museum The earliest regarded leaf springs started appearing on carriages in France in the mid-seventeenth century in the form of the two-element elbow spring (as the illustrated illustration from Lisbon), and afterwards migrated to England and Germany,[6] showing about the carriages of the rich https://arthurhzsmd.mybuzzblog.com/15210809/the-2-minute-rule-for-parking-heater