B - Operations – Transporting – 21 – F
Patent
B - Operations, Transporting
21
F
26/168
B21F 45/16 (2006.01) A44B 19/58 (2006.01) B26D 1/25 (2006.01) F04D 1/04 (2006.01) F04D 3/00 (2006.01) F04D 13/08 (2006.01)
Patent
CA 1189693
ABSTRACT OF THE DISCLOSURE An apparatus for forming an element-free gap in a con- tinuous slide fastener chain. In the apparatus, a reciprocating punch blade has cutting edges along opposite sides and is relieved at opposite ends along the cutting edges so as to form a pair of wing portions disposed one on each side of the punch blade. An elongated slot formed in a die for receiving the cutting edges has at its opposite ends a pair of lateral branches disposed one on each side of the elongated slot in opposite relation to the sides of the punch blade on whcih the wing portions are disposed. The wing portions and the lateral branches jointly serve to protect a pair of coupling elements disposed adjacent to the opposite ends of the space section from being cut by the punch blade.
396066
Gowling Lafleur Henderson Llp
Yoshida Kogyo K.k.
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