Adjuster for building ventilation flap - has large head section to engage cut outs of lever fork having adjuster screw

摘要

The adjustment device is for one with a valve type flap which is positioned in the ventilation gap of a cavity wall or window. The enlarged or thickened head section (6b) is mounted on the end of the linkage rod (6) directed towards the flap (2). The head (6b) engages in bearing cut-outs (4c) between the prongs or cheeks (4', 4") of the lever (4). An engagement catch (6d) for the adjustment device is a slit for a screwdriver is also situated between the lever (4) prongs (4', 4"). Both sections (6a, 6c) of the link rod (6) are directly in contact with the adjustment device throughout their threaded length.