Control system for a sewing machine

Details Control system for a sewing machine Control system for a sewing machine

G - Physics

05

B

342/22

G05B 24/02 (2006.01) D05B 27/22 (2006.01)

Patent

CA 1089956

ABSTRACT OF THE DISCLOSURE A control system for a sewing machine includes an impulse generating circuit and a counter means connected thereto. A four bit shift register and a mode selecting circuit connected thereto are provided. The system includes a circuit for feeding the work material or fabric forwards, a circuit for feeding the work material backwards, and a circuit for resetting these circuits. The system is capable of selecting, in advance, the number of stitches in a single forward and backward reciprocal non-ravel seam end. The system is also capable of doing a desired number of the repeated non-ravel seam endings at a certain place (repeated reciprocal non-ravel seaming mode); and the system is capable of selection between the non-ravel seam end mode and the above- mentioned repeated non-ravel seaming mode. The selection is be- tween the mode wherein a single starting non-ravel seam end and a single finishing non-ravel seam end are executed on the opposite ends of an ordinary straight seam and wherein the repeated non- ravel seam end is executed for a desired number of repetitions.

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