Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machine
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United States of America Patent
Stats
-
Jan 8, 1985
Issued Date -
N/A
app pub date -
Mar 22, 1982
filing date -
Oct 24, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for controlling the drive of a stepping motor to adjust the lateral stitch bight and/or the feed length of a sewing machine comprising apparatus connected to the stepping motor for rendering the stepping frequency of the stepping motor variable as a function of the speed of the sewing machine. The apparatus comprises a microcomputer which is connected to a pulse transmitter for transmitting pulses proportional to the speed of the sewing machine.
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