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 (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 233
an iron casting. This is illustrated in Fig. 371. Thepattern consists of a rectangular arbor r and of several patternsfor the flanges s. These flanges should be notched to fit over thearbor, but need not be attached in any other way, the molder placingthem in the position required; his judgment of… … Fig. 371. Cast-iron Arbor of the core, and the thickness about I inch. The outside circiJaredges should be chamfered to a thin edge, so as to prevent softramming under the flanges. The width q should be J inch lessthan the half circle, as it is required to have the sand rammed overthe top of the…
Patternmaking
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