| 摘要 |
<p>Each of the sleeves (1) is designed as a shaft divided in a wider (8) and a narrower section (7) and provided with a top plate (2, 3) attached to the shaft in an obtuse angle. The sleeves (1) are of different lengths. Holes are drilled into the two frame parts to be joined leading from the outer edge to the joint surface. The sleeves (1) are inserted, the plates (2, 3) protecting them from sliding into the bores too far, and secured with the screw (c) inserted from one end and guided through both sleeves (1).</p> |
