Electronic sewing machine with stitch control dependent on sewing material

Claim 1

In a sewing machine having a needle positioning mechanism, a cloth feeder, input means adapted to be adjusted by an operator, means for controlling the needle positioning mechanism to provide transverse movement of a needle and for controlling movements of the cloth feeder for providing determined seam patterns on a sewing material, and a memory unit connected to control said controlling means as a function of adjustments on said input means; the improvement wherein said input means comprises means for producing address signals in accordance with the setting thereof, means applying said address signals to said memory unit whereby said memory unit produces output signals in accordance with pre-programmed data therein for controlling said controlling means in accordance therewith, and further means for stepping the address signal output of said input means in dependence upon the completion of operations of said controlling means, the data stored in said memory unit including data relating to the empirically best stitch characteristics for different thicknesses and textures of said sewing material, whereby said input means may be set in accordance with said thickness and texture for the automatic adjustment of said seam.