Programmed pattern aligning device for a sewing machine

Details Programmed pattern aligning device for a sewing machine Programmed pattern aligning device for a sewing machine

1987-11-02

1988-07-19

Nerbun, Peter

Sewing

Special machines

Darning

112153, 112306, D05B 1900, D05B 2706, D05B 2714

Patent

active

047577738

ABSTRACT:
A pattern aligning device for a sewing machine having two two-dimensional pattern sensors, first and second computing means and first and second actuating mechanisms. Responsive to the two-dimensional pattern data sensed by the sensors, the first and second computing means compute the displacements between the patterns on the two sheets of material in two directions. The calculated displacements in the two directions are actuated by the first and the second actuating mechanisms to correct the alignment of the two sheets of material during sewing.

REFERENCES:
patent: 3954071 (1976-05-01), Mall et al.
patent: 4159687 (1979-07-01), Masuda et al.
patent: 4541347 (1985-09-01), Kawaguchi et al.
patent: 4612867 (1986-09-01), Rosch et al.
patent: 4658741 (1987-04-01), Jehle et al.
patent: 4660484 (1987-04-01), Yasui

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