Sewing – Elements – Frames
Patent
1982-08-30
1985-04-30
Nerbun, Peter
Sewing
Elements
Frames
112275, 318369, D05B 6924, D05B 6926
Patent
active
045136769
ABSTRACT:
A method and apparatus for automatically positioning a reciprocating needle while rotating the motor a minimum number of degrees. Apparatus is provided for sensing the motor angle and comparing it with a preset braking angle. After the braking angle has been reached, the motor is decelerated until it reaches a needle positioning speed, whereupon the motor angle is again sensed and compared to the needle positioning angle. The motor rotates until the needle positioning angle has been reached, whereupon the brake is reapplied to stop the motor at the desired needle position in a minimum time duration without performing an additional stitch.
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Abney Paul A.
Isett Donald D.
Martell Charles R.
Howison Gregory M.
Medlock Nina L.
Microdynamics, Inc.
Mills Jerry W.
Nerbun Peter
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