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 202
Fig. 309. Original Gated Patterns, Showing First Attempt to Increase Produc-tion. They Require Dry-Sand Core for Each Casting. With Machine-Mounted Patterns, Entire Mold la Alade in Green Sand … Fig. 310. Nowel or Drag Stripping-PIate Hand-RammedMolding Machine endwise onto the holder frame, as indicated in Fig. 308, the bevelon the inside of the lugs o being molded with a dry-sand core, andthe round recesses in the holder also being molded with a dry-sand 184 PATTERN MAKING core. The…
Patternmaking
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