APPARATUS FOR MAKING HOLLOW CONCRETE ARTICLES

摘要

A machine having a rotatable and vertically movable table which includes four tile molds of four tiles each ninety degrees apart around the periphery of the table. A concrete source is provided at molding stations 180 DEG apart while ejecting means are provided at oppositely disposed stations 180 DEG apart. The table is rotated back and forth between the molding and ejecting stations. While two sets of tile, four each, are being formed two sets of tile, four each, are being ejected. The forming of the tile and the ejecting occur simultaneously as the table is raised and lowered relative to vertically stationary packer heads at the molding station and vertically stationary ejecting means at the ejecting station. A moisture sensitive probe automatically controls the concrete supply to provide the desired quantity of concrete at the molding stations.