Electronic sewing machine
AssigneeJanome Sewing Machine Industry Co., Ltd.
InventorYasukata Eguchi
Life of this patent
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Abstract
A control circuit is provided in an electronic sewing machine wherein a specific stitch pattern is selected from a plurality of stitch patterns stored in an electronic memory, by selection of a corresponding pattern number which is then indicated at a digital indicator arranged on a front panel of the machine housing. A possible incomplete or incorrect selection of a pattern number will cause the selected pattern number indicated at the digital indicator to blink, thus giving a cautionary notice to the machine operator and, at the same time, will cause the sewing machine to stop from further stitching operation.
Claims5
An electronic sewing machine comprising,
- an electronic memory for storing stitch control data for a plurality of stitch patterns to be selectively and sequentially read out, to control the formation of a selected pattern by the sewing machine, each of said plurality of stitch patterns corresponding to a different pattern number to be indicated upon selection of a pattern by an operator;
- selecting means for selecting a stitch pattern by designation of a pattern number, said selecting means including a plurality of operating switches;
- digital indicator means for indicating said pattern number in the form of two digits when selected by operation of said operating switches of said selecting means;
- discriminator means for detecting if said selected pattern number corresponds to a stitch pattern the control data for which is stored in said electronic memory, and for producing either an affirmative or a negative signal according to the detection result;
- stitch control means coupled to said discriminator means and responsive to said affirmative signal, for controlling needle lateral amplitude and fabric feed amount in accordance with the selected pattern;
- and
- safety means coupled to said discriminator means, said digital indicator means and said stitch control means, and responsive to said negative signal to cause said digital indicator means to make a cautionary operation, and to cause said stitch control means to remain inoperative.
Dependencies are inferred from the claim text.