| 摘要 |
PURPOSE:To fix easily metallic walls to each other with high binding power by superposing the metallic walls on each other then erecting tongue pieces facing oppositely from each other to both metallic walls. CONSTITUTION:A mounting part 21 of a cross rail and a mounting wall 31 of a vertical grating are superposed. A pair of tongue pieces 6, 6, 6', 6' which are broad at the top ends, are narrower the nearer the root side and face oppositely from each other are so worked as to erect on the part 21 and the wall 31 by jigs 5 from the aperture 26 side of a main member 24. The pieces 6, 6 on the part 21 side are therefore engaged with the worked holes on the mounting wall side made by working and are thus bound therewith.
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