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 229
Fig. 364. Core Box Closed is placed in the drag half, the ends extending through the notchedends of the core box. Green sand is rammed in drag and cope andstruck off level with the top of each half. The core box is closed 210 PATTERN MAKING by lifting on all four handles like closing a book, print… … Fig, 365. Pipe Core Set in Mold of the core box can now be retiu-ned to its first position, leaving thecope half of the core resting on the drag itself. The complete
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
