Metal frame for shuttering co-operating hook - contains channel into which hook shaped projection on shuttering panel is secured

摘要

The shuttering frame is made up of beams (3) formed out of bent iron which have a large longitudinal channel at one end the sides of which are parallel to the plane of the shuttering panel (B). The shuttering panel (B) carries a co-operating hook-shaped projection (7) which can slide within the channel. The shuttering panel (B) is slid into position and held there by inserting spindles through an appropriate aperture (12) in the base of the channel and through holes in the sides (8,10) of the projection (7).