Metal mould for mfr. of cores - with filler pieces attached to support plates to allow large moulds to be made with conventional machines

摘要

A metal mould for mfr. of cores has a number of support plates and filler pieces which are fastened to the plates. One surface of the support plates may be plane and the filler plates are fixed to them by bolts. Large moulds may be made without special machining equipment and the wt. maybe less than one-piece moulds.