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seventeenth-century mentor spring in Lisbon Carriage Museum The earliest known leaf springs began appearing on carriages in France within the mid-17th century in the form of the two-part elbow spring (because the illustrated illustration from Lisbon), and afterwards migrated to England and Germany,[six] appearing on the carriages of the rich in All

In the event the motor vehicle will come across a projection to the road surface area, the wheel moves up, deflecting the spring. This changes the size involving the spring eyes. If each ends are fixed, the spring will not be in a position to support this alteration of length."Quarter-elliptic" springs frequently had the thickest part of the stack