| 摘要 |
The lifter, having a sloping upper surface and designed to be fixed to a frame cross-member to prevent a door or window from sagging on its hinges when in the closed position, is made with a slot (14) to receive an ironwork component (15) such as a fastening catch on the door or window. The lifter is also fitted with a coupling (22) having at least one tongue (23, 23A), e.g. of a synthetic material, to engage with the catch. |
