Residual thread chain back tacking device for overlock stitch ma

Sewing – Elements – Thread cutting – severing or breaking

Patent

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Details

112288, 112DIG1, D05B 6506

Patent

active

047635908

ABSTRACT:
A residual thread chain back tacking device for stitching a residual thread chain in the proper position of a succeeding sewn cloth material has a thread chain cutting device which initially cuts most of the thread chain off, and then blows the remaining thread chain in the back tacking direction and horizontally. A thread chain suction pipe moves adjacent the back tacking position and sucks the remainder of the thread chain thereinto and holds it by means of a thread chain press cylinder while back tacking is completed. An air nozzle then blows the remaining thread chain against a cutter, and the suction in the thread chain suction pipe sucks the cut-off end away.

REFERENCES:
patent: 4478163 (1984-10-01), Keeton
patent: 4644884 (1987-02-01), Tatsumi
patent: 4672902 (1987-06-01), Michaels

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