Method for gapping a slide fastener chain

Details Method for gapping a slide fastener chain Method for gapping a slide fastener chain

1979-11-13

1981-01-06

Combs, Ervin M.

Metal working

Method of mechanical manufacture

Of a slide fastener

B23P 1904

Patent

active

042427851

ABSTRACT:
A method of providing a slide fastener chain with gaps free of fastener elements at predetermined interval is disclosed, the method comprising imparting a tendency to the fastener chain to spread the confronting longitudinal edges of its opposed stringer tapes prior to removal of the fastener elements, and maintaining constant tension over a length of the fastener chain, whereby the gaps can be formed accurately at predetermined locations along the length of the fastener chain. A preferred form and construction of apparatus tailored to carry this method into practice is also disclosed.

REFERENCES:
patent: 2885774 (1959-05-01), Waldes
patent: 2987809 (1961-06-01), Burbank
patent: 3063323 (1962-11-01), Graf
patent: 3129498 (1964-04-01), Runnels
patent: 3391441 (1968-07-01), Carlile
patent: 3490133 (1970-01-01), Glindmeyer et al.
patent: 3631581 (1972-01-01), Moertel
patent: 3663000 (1972-05-01), Perlman
patent: 3844017 (1974-10-01), Fisher et al.
patent: 3852869 (1974-12-01), Shimai
patent: 3987533 (1976-10-01), Sandgren
patent: 4019240 (1977-04-01), MacFee

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