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 238
Fig. 378. Under Side of Pattern of Mold Plate PATTERN MAKING 219 side and in the diameter of the hole. This ring should pass easilyover the roll pattern, and, as soon as the pattern has been drawn,this ring is removed and the cheek is complete. … Pig. 379. Stripping Ring Steel Centering Pln ^ Dry Sand Core
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
