Sewing – Elements – Frames
Patent
1981-11-23
1984-06-26
Nerbun, Peter P.
Sewing
Elements
Frames
112158E, 112315, D05B 302, D05B 2722
Patent
active
044559534
ABSTRACT:
During stitching a pattern, there is often issued a designation to change the pattern under forming to the other. In such a case total load on a fabric feed control motor and a needle amplitude control motor is temporarily increased. A microcomputer which controls driving of these motors, discriminates the new designation and rotating phase of the sewing machine and drives the fabric feed control motor by means of specific data by mean value of the maximum and the minimum fabric feed control data, instead of the fabric feed control data which is first read out next to said designation. The control amount brought about by difference between said specific data and the fabric feed control data read out prior to said designation which controls as the final fabric feed before said designation, is caused to prevent the maximum available to the sewing machine so that the total load applied to the two motors are reduced when the maximum possible control is given to the needle amplitude control motor in succession to the load on the fabric feed control motor.
REFERENCES:
patent: 4276840 (1981-07-01), Takenoya et al.
patent: 4343249 (1982-08-01), Takenoya et al.
Inamori Mikio
Shomura Eiichi
Takenoya Hideaki
Janome Sewing Machine Co. Ltd.
Nerbun Peter P.
Striker Michael J.
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