| 摘要 |
<p>Device for holding a column (I) of like hollow pieces (II) e.g. refractory thimbles is a lightweight mechanical assembly inserted into (I). A system of articulated claws hook onto the internal face of the lowest (II) when the wt. of (I) bears on the claw points, and the claws swing towards the axis of the holding device when the lowest (II) rests on a fixed support to allow the holding assembly to disengage upwardly from (I).</p> |
