| 摘要 |
PCT No. PCT/CH84/00015 Sec. 371 Date Oct. 10, 1984 Sec. 102(e) Date Oct. 10, 1984 PCT Filed Feb. 3, 1984 PCT Pub. No. WO84/03110 PCT Pub. Date Aug. 16, 1984.The lateral displacement or oscillation of a sewing machine needle bar is controlled by a permanently installed servomotor-driven cam operated in coordination with a second similarly installed servomotor-driven cam controlling the displacement of the fabric feed dog. Manipulation of the faces on the two cams, in a synchronized manner, allows numerous stitch patterns to be achieved according to the amplitude and direction of displacement of the needle bar and feed dog pursuant to the positioning of the faces on the two cams by their respective servomotors. |
