Twist pins having bulges are fabricated from helically coiled stranded wire. Wire is advanced from a source such as a spool to create slack wire configuration, and wire is then advanced from the slack wire configuration to a position where each bulge is formed. Each bulge is formed by gripping the wire...http://www.google.se/patents/US6584677?utm_source=gb-gplus-sharePatent US6584677 - High-speed, high-capacity twist pin connector fabricating machine and method
