Barrows, F. W. (Frank Wilson), b. 1853 · New York, N.W. Henley Pub. Co. · leaf 254
ern 3, Fig.120, is required. This leaves a cavity in the mould whichfits over and around the six little projections of sand,formed by pockets M, Fig. 119, for each nut in the set.As these projections would be very easily crushed in closingthe mould, and thus ruin the castings, the piece 3, Fig. A… … Fig. 119. ness as ring 2, which also has the thickness marked I.Part 3 also completes the core by means of the cavity, Ediameter, and H depth. The projection, N, on bottom ofFig. 120, is merely for centring and locating part 3. As many sets of Figs. 118 and 120 were made as wouldbe required to fill…
Patternmaking
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