A Rifle Design Based on Archimedes's Screw...
According to legend, the Greek engineer Archimedes of Syracuse designed a pump that moved water up by using a screw inside a sealed shaft. The Evans lever-action rifle, designed by a dentist in Maine, uses the same mecha...
http://www.neatorama.com/2012/12/08/A-Rifle-Design-Based-on-Archimedess-Screw/

