Apparatus for forming "slide fastener elements"

An apparatus for forming a row of slide fastener elements, comprising:

• (a) rolling means for rolling a wire into a generally Y shape in cross section while the wire is intermittently supplied at a predetermined pitch;
• (b) a cutting die having on a wire supplying path a through hole for insertion of the rolled wire and movable receprocatingly in a direction of cutting the wire;
• (c) a protuberance-of-coupling-head forming die situated contiguously to a forward end of the reciprocating movement of said cutting die;
• (d) a cutting punch fixed to a frame and situated in frictional contact with an upper surface of said cutting die;
• (e) a protuberance-of-coupling-head forming punch situated above a protuberance forming station and vertically movable toward and away from said forming die;
• and
• (f) a calking punch for calking attaching legs of the individual element blanks, which are provided with the respective protuberances, successively on a fastener tape being supplied intermittently at a predetermined pitch;
• (g) said rolling means having rolling surfaces for providing the attaching legs with a generally C-shape profile;
• (h) said calking punch having calking surfaces for providing cut edges of each individual attaching leg with smooth beveled surfaces.