Method and apparatus for pouring several moulds in a mould-string plant in one pouring operation

In a method for pouring several moulds in a mould-string plant in the pouring operation, the moulds are produced by compression of sand or similar mould material in a pressing chamber comprising pattern plates for providing impressions in the surfaces of the mould parts for forming the mould cavities and inlet runners . The moulds are advanced to a pouring track or guideway, on which the casting moulds are formed by positioning the mould parts close together and the advancement of the casting moulds is stepwise through a pouring station, in which the moulds are filled with molten metal. By providing at least one runner for mutually connecting at least two inlet runners for consecutive mould cavities , the mutually connected mould cavities can be filled through a single pouring inlet , and unused pouring inlets may be plugged by a suitable plug in order to minimise the amount of molten metal needed to fill the mould cavities