Examples of lock springs Ward springs Ward springs were used in padlocks from the time of the Great Migration on. Initially they were only double springs, but later more were used. During the Middle Ages, packages of four, six or up to eight ward springs were used. Plate springs In door locks, plate springs can serve as push springs, compression springs or lever springs. Helical compression springs Helical compression springs are found in many different padlocks from the 17th century on. Particularly in new inventions such as screw locks, Brahma locks, cylinder locks, etc. In padlocks…Helical springs in cylinder locks Most of our cylinder locks contain tiny helical springs that control the lock pins.Torque springs The most common springs in door locks since the 17th century.Special springs Ring and torque springs for chest locks.