| 摘要 |
<p>Each shell (1a,1b) making up the ball (1) carries fixed on each of the two opposite plane walls crossed by the wire (2) a part of a vice (3) capable of engaging with the other part of the vice by means of a peripheral hinged coupling (4) having an axis of rotation (I-I) parallel to the wire and the two parts of the vice (3a,3b) are provided with means (5,7,8) capable of realizing a tightening device transverse to and for clamping onto the wire (2) positioned in a seating obtained in the two parts of the vice. <IMAGE></p> |
