(from the article `spring`) The helical spring, in which wire is wrapped in a coil that resembles a screw thread, is probably the most commonly used mechanical spring. It can be ... In manufacturing coiled helical spring, the spring wire is wrapped around a mandrel that serves as a support; when seamless tubing is being extruded, ... ...
Found on
http://www.britannica.com/eb/a-z/h/33
A balance-spring whose coils lie one above the other in a cylindrical configuration, in contrast to the usual flat or spiral pattern. Â John Arnold used helical springs in his chronometers.
Found on
http://www.encyclo.co.uk/local/20450
No exact match found.
