Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 116
he bottom of the groove,but only on the chipping pieces by the sides, and at ^ ^;see cross-section. Fig. 132. Fig. 133 shows the pattern of the segment, and ismade to be moulded on the edge, the groove being inthe cope; it is desired to cast the bolt-holes, and caremust be taken in spacing them… … MAKING SHEAVES FROM PATTERNS. PATTERN MAKING. 67 oblong—as shown at/; this is done in order that thecore may stand in the mould more securely while tliecope is being-^closed. If a round print were used justthe size of holes, the cores would be top-heavy and diffi-cult to locate in the mould, hence…
Patternmaking
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