Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1916)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 148
Fig. 233. Upper Iron Core-Box Details lower halves, making four parts to the core box. This is necessaryin order to allow for the removal of the core from the boxes. Theinternal shapes of the boxes are difficult to illustrate on paper, butif the drawings given in Figs. 233 and 234 are carefully…
Patternmaking
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