Metal working – Method of mechanical manufacture – Of a slide fastener
Patent
1977-07-11
1978-09-05
DiPalma, Victor A.
Metal working
Method of mechanical manufacture
Of a slide fastener
29 332, 29766, 29767, 264252, 425DIG34, B23P 1100
Patent
active
041108906
ABSTRACT:
Individual slide fasteners are manufactured from a pair of continuous slide fastener stringers having stringer tapes made of a fabric including thermoplastic synthetic fibers. While being advanced intermittently in the longitudinal direction, the stringers are stamped out to form an element-free gap therein and cut to sever off an individual slide fastener length simultaneously at a first station with the application of heat to fuse and solidify the cut end against reveling. A bottom end stop is mounted on the cut end portion of the severed slide fastener length also at the first station. During advancing movement from the first station, the fastener chain is threaded through a slider fixedly supported between the first station and a second station located downstream of the first station. A top end stop is mounted on the cut end portion of the continuous slide fastener stringers at the second station simultaneously with the steps repeated at the first station.
REFERENCES:
patent: 2989751 (1961-06-01), Schevermann
patent: 3190779 (1965-06-01), Porepp
patent: 3340594 (1967-09-01), Frohlich et al.
patent: 3353256 (1967-11-01), Frohlich et al.
patent: 3485691 (1969-12-01), Waldes
patent: 3698064 (1972-10-01), Uhrig
patent: 3714698 (1973-02-01), Fukuroi
DiPalma Victor A.
Yoshida Kogyo K.K.
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