B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/120
B28B 7/08 (2006.01) B28B 1/08 (2006.01) B28B 1/20 (2006.01) B28B 7/18 (2006.01)
Patent
CA 1045347
Method and Apparatus for Manufacturing Concrete Elements Abstract of the Disclosure A method and mould for manufacturing concrete elements by means of a turnable mould, whereby the concrete is cast in a main mould when the latter is in horizontal position while the mould is at the same time vibrated. The mould has a closed construction and is used in such a way that, at the casting stage, the second half of the mould construction, which is hinged in relation to the main mould, is in vertical position. Thereafter the mould construction is closed which causes a pressure on the concrete, whereby any excess concrete is extruded through the slit between the mould halves, Then the entire mould construction is turned into vertical position while continuing the vibration so as to eliminate any air that has moved to the outer surfaces of the element. The mould construction is turned further by 90° so that said second half of the mould, which comprises a frame and an auxiliary mould fastened inside the frame, remains underneath. Finally the main mould is lifted into vertical position and the auxiliary mould is detached from the frame so as to shift the element away.
253872
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