Sewing machine for fancy seams
AssigneeHusqvarna Aktiebolag
InventorBengt A. Bergvall
Life of this patent
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Abstract
A programmable sewing machine has a stitch memory connected to control the needle and/or the cloth feeder. The stitch memory is addressed by an address counter, which is stepped in response to operation of the machine. The address counter is reversible, and the direction of counting therein and the preseting of an address therein is derived from a seam instruction memory responsive to a pattern selection device.
Claims8
In a sewing machine for sewing fancy seams and having means for positioning the needle and/or the cloth feeder, a stitch memory connected to apply stitch codes representing at least one fancy seam to said positioning means, an address counter connected to address said stitch memory, pulse generator means responsive to operation steps in said machine and connected to control said address counter, said machine further having a pattern selection means for producing seam selection codes;
- the improvement wherein said address counter is reversible, and further comprising a seam instruction memory responsive to said seam selection code and connected to apply a seam element code and counting direction instructions to said address counter.
In a sewing machine for sewing fancy seams and having means for positioning the needle and/or the cloth feeder, a stitch memory connected to apply stitch codes representing at least one fancy seam to the positioning means, an address counter connected to address said stitch memory, means responsive to operation of said sewing machine for controlling said address counter, and means for storing an address in said counter corresponding to an address in said stitch memory of a seam to be sewn;
- the improvement wherein said address counter is reversible, and furthr comprising a seam instruction memory, means responsive to the selection of a pattern in said machine for controlling said seam instruction memory, said seam instruction memory having an output connected to preaddress the address stored in said address counter, and an output connected to control the direction of stepping of said address counter.
Dependencies are inferred from the claim text.