Metal working – Method of mechanical manufacture – Of a slide fastener
Patent
1982-06-24
1984-04-24
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Of a slide fastener
29410, 29767, 29770, B21D 5350, B21D 5352, A41H 3706
Patent
active
044439245
ABSTRACT:
A method of and apparatus for detecting ends of successive fly strips connected end to end by a slide fastener chain. The successive fly strips, with their first flaps superimposed on a tape of one fastener stringer and with their second flaps superimposed on the other fastener stringer, are fed along a first straight path. The successive second flaps are deflected or moved aside, as they pass a wedge-shaped plow on the first straight path, to such an extent that the individual second flap lies at a right angle with respect to the general plane of the fastener stringers. Then, the direction of movement of the successive fly strips is shifted at a turning point to a second straight path inclined with respect to the first straight path so as to provide temporarily a relatively large triangular space between an adjacent pair of the deflected second flaps when the same confronting ends arrive at the turning point. Finally, a detector senses the presence of the triangular space, which indicates the arrival of confronting ends of an adjacent pair of the fly strips.
REFERENCES:
patent: 2885774 (1959-05-01), Waldes
patent: 3570104 (1971-03-01), Jensen
patent: 3630969 (1972-02-01), Potin
patent: 3863323 (1975-02-01), Takamatsu
patent: 4333232 (1982-06-01), Orr et al.
Goldberg Howard N.
Nichols Steven
Yoshida Kogyo K. K.
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