| 摘要 |
<p>The tool has a U-section or angle bar (1) equipped with a mold (2), which is directly positioned on a rail (5). The mold is equipped with a locking wedge (3), where height of the locking wedge is appreciably equal to half of height of the rail. An extraction rod (6) extracts the wedge. The wedge is formed with a hole (4) to allow positioning of the extraction rod. The wedge is removed by sliding along a side by the extraction rod introduced into the hole.</p> |
