| 摘要 |
<p>A machine comprises one needle (5), provided with thread (37) and fixed to a shaft (4) that oscillates around its axis so as to move the needle (5) between two extreme positions (Z1, Z2) which correspond to parallel sewing lines (50a, 50b). The needle which moves parallel to a vertical translation plane (Y) co-operates with a crook (17) moving along said translation plane (Y) to catch the loop (K) formed by the thread (37) in one or the other of both extreme positions (Z1, Z2) located on both sides of the translation plane (Y).</p> |
