| 摘要 |
<p>The device comprises a plate (10) placed over the needle beds (15, 16) and provided with two vertical grooves (11), for each work zone (Z), within which as many small bars (12a,12b) slide vertically. A rocking lever (20) for each pair of small bars (12a,12b) acts on them with two arms (21a,21b) while a third arm (21c) is subject to the action of a rack (4). A segment (18a,18b) is hinged to each small bar (12a,12b) and bears, fixed to its lower end, stitch-pressing means (23) which are extending for the whole length of the relative work zone (Z). The grooves (26a,26b) determine the contemporary oscillation of the small bars according to opposite directions (T,U) during their vertical movement, to allow the mutual change of position of the stitch-pressing means (23); a series of stitch-retaining means (30) is placed at the beginning and at the end of each work zone (Z).</p> |
