| 摘要 |
<p>The vine training wire tensioning assembly consists of a tension adjusting mechanism and a post support device. The tension adjusting mechanism may include two levers, these being pivotally connected to a shoe fixed to the post via a bracket through which extends a bolt acting as a retaining pin. The bolt may also constitute the pivot for the two levers. The latter may be retained in the vertical position by a ring which is received around the post. Alternatively, the levers may be held in position by a pin.</p> |
