Safety device for cellar gratings - fits over shaft wall fixture fillet with two fixing components

摘要

The union (10) forms a rigid connection with the shaft cover plate and incorporates a grating engagement hook (8,10) pointing away from the cover plate, and engaged with the upper section (27) of the shaft wall fixture fillet (25). The hook is slotted (12) longitudinally along its complete length. The slotted grating engagement hook (8,10,11) is U-shaped, and has one short (11) on one long (10) arm. The long arm engages the upper section of the shaft wall fixture fillet, and the short arm (11) is no longer than the height of a grating support frame. In both sections of the short arm is an aperture (11) parallel to the shaft cover plate in which a grid brace stop screw engages. USE/ADVANTAGE - To prevent break-in through a cellar grating.