Machine for making concrete pipes in upright position

B - Operations – Transporting – 28 – B

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25/14

B28B 21/12 (2006.01) B28B 21/14 (2006.01) B28B 21/16 (2006.01) B28B 21/22 (2006.01)

Patent

CA 1055230

Abstract of the Disclosure In a concrete pipe moulding machine comprising a rotationally vibrated core and an outer mould, deficiencies may occur especially in the upper ends of the moulded pipes due to rather vigorous relative movements between the core and the outer mould. Means are provided to moderately reduce these re- lative movements by neutralizing the tendency of the outer mould to perform a rocking motion caused by the transmission of the rotating vibration forces via the moulding material onto the outer mould.

261591

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