Sewing – Elements – Frames
Patent
1982-03-08
1984-01-24
Nerbun, Peter P.
Sewing
Elements
Frames
112158E, D05B 302
Patent
active
044269463
ABSTRACT:
In a stitch control process of the sewing machine which employs a microcomputer with an electronic memory storing stitch control signals and a needle position control motor and a fabric feed control motor, the microcomputer controls the needle position and the fabric feed control motors at certain rotation phases of the sewing machine. The microcomputer temporarily holds, during the operation of the sewing machine, the needle and feed control data and the feed control amount based on the feed control data which are read out in each phase and calculates the addition of the feed control amount and the needle control amount based on the needle control data which is read out at the following phase. If the calculating result is more than a predetermined value, the microcomputer employs the needle and feed control data read out at the preceding phase instead of the needle and feed control data read out at the following phase to control the feed and needle control motors with a total value of the needle and feed control amounts which is less than the predetermined value.
REFERENCES:
patent: 4308814 (1982-01-01), Takenoya
patent: 4318357 (1982-03-01), Minalga et al.
patent: 4340002 (1982-07-01), Hanyu et al.
Inamori Mikio
Makabe Hachiro
Takenoya Hideaki
Janome Sewing Machine Co. Ltd.
Nerbun Peter P.
Striker Michael J.
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