Apparatus for gapping a slide fastener chain

Details Apparatus for gapping a slide fastener chain Apparatus for gapping a slide fastener chain

1978-08-04

1980-02-19

Combs, E. M.

Metal working

Means to assemble or disassemble

Slide fastener

B21D 5350, B29D 500

Patent

active

041887166

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), Gundmeyer 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

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