| 摘要 |
The plates (1) with the T-shaped recesses at the frame sides (7) are adjusted in number to the frame size, from which they are positioned at a distance adjusted to the height of the heads (11) of screws (9) working in conjunction with them. - The screw heads, pref. of the hexagonal type, are located in a gap (13) between the plate (1) and the frame (7). By the introduction of a suitable tool in the gape, each screw (9) can be screwed into or out of the door or window aperture wall (8), thus causing the frame (7) to follow the axial movement of the screw head (11). |
