Sewing machine motor speed limiting by pattern selection

Details Sewing machine motor speed limiting by pattern selection Sewing machine motor speed limiting by pattern selection

1978-11-30

1979-08-14

Nerbun, Peter

Sewing

Work manipulating

Guides

112220, 318305, 318342, 318348, D05B 302, D05B 6918

Patent

active

041641922

ABSTRACT:
A circuit which limits the maximum permissible speed of a sewing machine motor when specific stitch patterns are selected. Electronic signals from a means for sensing the selected stitch pattern are analyzed by the circuit to control the operation of a relay which connects a resistance in series with the sewing machine motor to reduce the maximum speed at which the drive motor may be operated.

REFERENCES:
patent: 3780681 (1973-12-01), Sasaki
patent: 3913507 (1975-10-01), Pollmeier
patent: 4108093 (1978-08-01), Watanabe et al.

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