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US 4,513,673 AGranted
Stitch interrupting device for sewing machines
AssigneeRockwell-Rimoldi S.p.A.
InventorsGianfranco Brusasca, Franco Garzulano
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AssigneeRockwell-Rimoldi S.p.A.
InventorsGianfranco Brusasca, Franco Garzulano
Estimating the term…
A device for interrupting the formation of stitches in a sewing machine having at least two needles and a looper for each needle which are arranged to be actuated in tandem. The needles are phased to perform their functions simultaneously with a first having an elongated thread opening, and the second a conventional opening. The first needles' looper is slightly elevated and if no lack of phasing exists between the needles and their loopers, the elevated looper will cooperate with its needle adjacent the upper end of the thread hole and the other looper cooperates with its needle in a conventional manner. Should there be a lack of phasing, the elevated looper cooperates with its needle midway between the length of the thread hole which causes the other looper to pass beneath the hole of its needle thus interrupting the formation of stitches by the latter needle.
A device for interrupting the formation of at least one line of stitching in a sewing machine of the type having a support structure for pivotably supporting at least two looper holders in tandem with individual loopers mounted on each holder and at least one needle in operative association with each looper for forming spaced and parallel lines of stitching, said device comprising:
Dependencies are inferred from the claim text.