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US 5,331,909 AGranted
Presser foot and needle drive device in an embroidery machine
AssigneeTokai Kogyo Mishin Kabushiki Kaisha
InventorsIkuo Tajima, Satoru Suzuki, Youichi Mizuguchi
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Abstract
A presser foot and needle drive device in an embroidery machine includes a drive mechanism and a control device for vertically reciprocally moving a presser foot between upper and lower dead center. The control device operates the drive mechanism according to patterns of presser foot movements which are determined for specific sewing conditions.
Claims4
A presser foot and needle drive device in an embroidery machine for moving the presser foot in response to the vertical reciprocating movement of a needle bar and sewing needle, comprising:
- drive means for vertically reciprocally moving a presser foot;
- and
- control means operable for controlling said drive means to effect patterns of movement of said presser foot for various sewing conditions;
- means to effect plural strokes of vertical reciprocating movement of said needle bar;
- said control means operating to determine a pattern of vertical movement of the presser foot with respect to each stroke of vertical reciprocating movement of a needle bar based on a sewing start command signal and a thread cutting command signal, said control means controlling said drive means to effect said determined pattern.
2 more elements
Dependencies are inferred from the claim text.