Moulds for producing light alloy and other castings

摘要

A mould for producing light alloy or other castings comprises a base plate which supports a number of pattern-defining elements. A tank is attached to the base plate and is arranged to contain molten metal which is fed into the tank through a pipe having a flow control valve. Injection tubes extend between the interior of the tank and the pattern, and the interior of the tank is arranged for connection to a source of pressure or to a source of vacuum.