Feeding-head
In some localities this is called shrink-head and sinking-head. It is a continuation of the rising-head to some distance higher than the latter is usually made, and is generally formed of sand within an iron box. If the proportion of feeding-head be equal to the casting, the latter will be effectually fed with metal sufficient to make good the depreciation from shrinkage; but if the riser must necessarily be much smaller, proportionately, than the casting, it will congeal, or set, ahead of the latter with the result of unsoundness, if the feeding-rod is not resorted to. See FEEDING; FEEDING-ROD.