Sewing – Special machines – Darning
Patent
1975-02-18
1977-06-21
Schroeder, Werner H.
Sewing
Special machines
Darning
11212115, D05B 2100
Patent
active
040304302
ABSTRACT:
Apparatus for simultaneously sewing two coupled stringers of a slide fastener onto portions of a carrier to opposite sides of an elongated slit therein, in which the carrier is elastic in the direction of the slit, in which a slide carrying a device for releasably holding one end of the slide fastener and one end of the carrier in the region of the slit therein is movable along an elongated guide rail fastened at one end to a two-needle sewing machine in the region of the needle plate of the latter, and in which the slide is biased with a substantially contact force in a direction toward the other end of the guide rail, that is in a direction opposite to that in which the slide fastener and the carrier move during the sewing operation to thereby keep the elastic carrier during the sewing operation under constant tension.
REFERENCES:
patent: 2444335 (1948-06-01), Coppock
patent: 3542262 (1970-11-01), Ewert
patent: 3713408 (1973-01-01), Deeks et al.
patent: 3750604 (1973-08-01), Carrel et al.
patent: 3903818 (1975-09-01), Marforio
Pickert Hansjurgen
Sesselmann Hans Dieter
Timmers Leonardes August
Nerbun Peter
Schroeder Werner H.
Striker Michael J.
William Prym-Werke KG
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