The principles of pattern making, written specially for apprentices and students in technical schools (1900)
Horner, Joseph Gregory, 1847-1927 · London, New York, Pitman · leaf 99
lans. The core box for arms of this sectionis illustrated in Fig. 65, the upper figure being a plansection of the box along the line C-O, the lower figurea cross section along the line B-B. There are twcsides A A rebated and screwed together, and their 84 PRINCIPLES OP PATTPRJsr MAKING. inner faces… … Fig. 66. Cored np Mould of Wheel. the rim, and the segmental boss f. A cored up mould ready for the cope is shown in Fig. 66, from whichthe relations of the several parts can be understood.A is the ring of teeth moulded from the tooth block,B B are the cores made from the box in Fig. 65, C is GEAR…
Patternmaking
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