One galvanized segment and the other is an uncoated segment, This barb is in the shape of a ladder, with metal straps holding two sections together. The galvanized segment has two twisted metal wire, the other has one strand. Ladder Wire, Pat. April 4, 1893. Pat# 494,551 John D. Curtis of Worcester, Mass. Round Wire barb, barbless, standard gage wire, parallel strands of two wire twist and single parallel wire, Counter clockwise.