Method of manufacturing slide fasteners

Details Method of manufacturing slide fasteners Method of manufacturing slide fasteners

1991-05-17

1991-12-31

Echols, P. W.

Metal working

Method of mechanical manufacture

Of a slide fastener

29712, 29766, B21D 5350

Patent

active

050759493

ABSTRACT:
A method is disclosed for manufacturing slide fasteners from a single homogeneous elongate stringer chain or a stringer chain comprising a plurality of interconnected stringer chains of different characteristics having first standard element-devoid space portions. The method comprises marking the stringer chain at spaced apart locations by providing second element-devoid space portions greater in length than the first standard space portions and detecting the second space portions to trigger operation of respective operative units in the manufacturing apparatus.

REFERENCES:
patent: 4625375 (1986-12-01), Osaki
patent: 4932113 (1990-06-01), Frohlich et al.

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