Apparatus for forming an element-free gap in a continuous slide

Details Apparatus for forming an element-free gap in a continuous slide Apparatus for forming an element-free gap in a continuous slide

1982-02-08

1984-01-31

Schran, Donald R.

Cutting

With work immobilizer

Means to clamp work

83253, 83387, 83622, 83921, 29408, B26D 125, B26D 702

Patent

active

044282648

ABSTRACT:
An apparatus for forming an element-free gap in a continuous 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 which 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.

REFERENCES:
patent: 3063323 (1962-11-01), Graf
patent: 3128543 (1964-04-01), Fasciano
patent: 3456328 (1969-07-01), Wasko
patent: 3831474 (1973-07-01), Perlman
patent: 3958319 (1976-05-01), Takamatsu
patent: 4307499 (1981-12-01), Isella

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