Sewing – Work manipulating – Severing
Patent
1985-01-08
1986-08-26
Schroeder, Werner H.
Sewing
Work manipulating
Severing
112288, 112294, D05B 3704, D05B 6500
Patent
active
046075836
ABSTRACT:
A cutting device for cutting the thread chain, or the like, between successive sewn parts moving along a path through a sewing machine. The sewing machine includes a needle. A holder downstream of the needle includes a horizontal cutout. A hook for lifting the thread chain between adjacent sewn parts on the path is movable up through the cutout for raising the thread chain. A scissors moves across the sewn part path and cuts the upraised thread chain. The holder holds the upstream sewn part from shifting while permitting the downstream sewn part to shift slightly upstream as the hook rises and prior to the cutting, whereby a single cut cuts the thread chain adjacent both sewn parts. A sensor senses the trailing edge of a sewn part and activates a stitch counter to cause the needle to apply a predetermined number of stitches before halting sewing so that the cutting can thereafter take place.
REFERENCES:
patent: 2095647 (1937-10-01), Mann
patent: 2354491 (1944-07-01), Valentine
patent: 3163136 (1964-12-01), Dickett
patent: 3487798 (1970-01-01), Marforio
patent: 3848555 (1974-11-01), Boser
patent: 3857346 (1974-12-01), Dal Negro
patent: 3938454 (1976-02-01), Boser
patent: 4075954 (1978-02-01), Hintzen et al.
Biermann Kurt
Steppat Gerhard
Wehmeyer Bodo
Durkoppwerke GmbH
Machuga Joseph S.
Schroeder Werner H.
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