摘要 |
<p>The device has a vertical upper section (70) and a horizontal section (72), opened exteriorly, provided at an upper part of a guiding lateral slide (32), where sections are communicated with an upper stop position (36) or lower stop position (37) of guiding units (30) e.g. pins. A turning wall e.g. elastically deformable shutter, selectively extracts the guiding unit from the lower stop position or upper stop position and introduces the guiding unit to the lower stop position or upper stop position.</p> |