| 摘要 |
<p>A removable reusable frame (10) for defining an opening in a brick or block wall that is under construction. The frame (10) comprises a first vertical member (13), defining a first lateral extremity of the opening and a second vertical member that defines a second lateral extremity of the opening. The second vertical member (15), the first vertical member (13) and the second vertical member (14) are interconnected by one or more horizontal links (19, 20) that are of adjustable lengths. Releasable clamps (21) are provided for securing the position of the second part of the, or each link (19, 20). The or each clamp (21) is secured to the first part and has an arm that carries a clamping member that can be inserted through a hole in the first part to clamp on to the second part and thereby lock them together.</p> |
