Sewing machine apparatus for setting the pitch of the last addit

Details Sewing machine apparatus for setting the pitch of the last addit Sewing machine apparatus for setting the pitch of the last addit

1986-11-26

1989-01-03

Nerbun, Peter

Sewing

Stitch forming

Feeding work material

112275, 11212111, D05B 2722, D05B 6922

Patent

active

047948752

ABSTRACT:
In a sewing machine equipped with an apparatus to terminate stitching at a predetermined point, the machine normally does not terminate stitching exactly at the desired predetermined point because the elastic nature of the workpiece causes the workpiece to stretch. A last stitch is added beyond the point where stitching terminates by the "step sewing" apparatus of this invention. To perform step sewing, an operator inputs a stitch pitch for step sewing with a digital switch, then pushes a step sewing button. Based on the selected stitch pitch, a CPU reads selected stitch pitch data. The data is used by the CPU to control a stitch pitch setting mechanism. A stitching device then performs a single stitch at the selected stitch pitch. By selecting the proper stitch pitch, the last stitch can terminate at the desired termination point.

REFERENCES:
patent: 4495877 (1985-01-01), Willenbacher
patent: 4528923 (1985-07-01), Hager
patent: 4587915 (1986-05-01), Wenz et al.
patent: 4602577 (1986-07-01), Kothe et al.

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