Method and apparatus for manufacturing slide fastener...

Details Method and apparatus for manufacturing slide fastener... Method and apparatus for manufacturing slide fastener...

B - Operations, Transporting

21

F

26/172

B21F 45/16 (2006.01) A44B 19/46 (2006.01) B21D 53/52 (2006.01)

Patent

CA 1157246

ABSTRACT OF THE DISCLOSURE A blank rod of metal has a substantially Y-shaped cross section including a pair of V-shaped diverging legs each having a longitudinal rib on its inner surface. The blank rod is intermittently fed in a longitudinal direction as each of the ribs is pressed by a presser roll having series of die teeth into a succession of projections or teeth longitudinally spaced an interval from each other. The blank rod is then transversely sliced substantially centrally across each tooth on at least one of the legs into a plurality of individual slide fastener coupling elements.

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