| 摘要 |
<p>The head (7) and sill (4) of the wall opening locate the frame members (13,17) with vertical support. Anchorage devices (21) are built into the edges of the wall opening, serving in the fixing and adjustment of the frame once placed. Horizontal, vertical and transverse adjustment is possible and the wall opening may be lined by concrete members (4,7,8) locating ferrules (21) at uniform centres. A lintel (7) rebate and an apron plinth may locate the frame, and a cam-wheel (1) may be bolted (2) to each ferrule. The cam-wheels may be masked (23), may house onto frame (13), and may be rotated by a tommy bar engaging blind bores (18).</p> |
