Method and apparatus for forming element-free spaces in slide fa

Details Method and apparatus for forming element-free spaces in slide fa Method and apparatus for forming element-free spaces in slide fa

1991-11-27

1993-01-12

Echols, P. W.

Metal working

Method of mechanical manufacture

Of a slide fastener

294265, 29770, A41H 3706, B21D 5350

Patent

active

051778556

ABSTRACT:
Discrete coupling elements of a slide fastener chain are removed by using an apparatus comprising a pair of pressure pads, a punch, cutters, a pair of guides, and a die. To form element-free spaces on the slide fastener chain, coupling elements are removed by clamping interengaged coupling elements by the punch and die, cutting forked legs by the cutter, and removing the cut legs from both sides of the slide fastener chain.

REFERENCES:
patent: 2877844 (1959-03-01), Burbank
patent: 2987809 (1961-06-01), Burbank
patent: 3063323 (1962-11-01), Graf
patent: 4131223 (1978-12-01), Aureli
patent: 4307499 (1981-12-01), Isella
patent: 4573383 (1986-03-01), Matsumoto

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