Title: Sewing machine motor speed limiting by pattern selection

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Herr, John A. (Garwood, NJ, US)
Brown, Jack (Union, NJ, US)
Peterson, Wesley R. (Bound Brook, NJ, US)
Jaffe, Wolfgang (Roselle Park, NJ, US)

Application Number: 965220
Filing Date: 1978-11-30
Publication_date: 1979-08-14
Assignee: The Singer Company (New York, NY)
Primary Class(es): 112/453 112/220, 388/815, 388/930
Other Classes:
US Patent Ref:

3780681	Dec, 1973	Sasaki	112/275.
3913507	Oct, 1975	Pollmeier	112/153.
4108093	Aug, 1978	Watanabe et al.	112/158.

Other Refs:
Primary Examiner: Nerbun, Peter
Assistant Examiner:
Attorney: Wallach; Michael H., Smith; Robert E., Bell; Edward L.