Extension for hollow metal formwork profiles - has metal plates with perforations for fasteners connecting profile to plates

摘要

An extending hollow metal spacer used with formwork for reinforced concrete can be extended in both directions to the required extend excessive bending. The device uses a pair of spaced metal plates (1) with a rectangular section metal beam (6) which can be extended telescopically between them. The outside plates have perforations (5) for nails or pins for connecting with the holes of the metal beam (6). The holes (4) of the metal plate (1) are smaller than the holes in the parallel metal plate. A hollow block (3) one end acts as a spacer between the outer plates (1).