| 摘要 |
1,196,007. Moulding concrete elements. ENTREPRISES CAMPENON BERNARD, SOC. ANON. 10 Nov., 1967 [14 Nov., 1966], No. 51291/67. Heading B5A. Prefabricated elements of concrete or other material are cast in a mould, the two ends of which are either a mask M and another preformed element (counter mould) CM or two countermoulds. The countermoulds are rigidly mounted, either on a base S or on guide rails, and are orientated relative to each other by rotation of one of the countermoulds about (a) a vertical axis or (b) a horizontal axis perpendicular to the paper or (c) a horizontal axis along the axis of the element. The elements formed may be used in curved structures or in structures requiring elements, the ends of which are rotated relative to each other. |
