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 68
Fig. 107. Half-Core Box … which the dry-sand core is formed, will be the extreme length ofthe pattern including x and y^ and the inside width will be the exactdiameter of the core prints. In this case, the core being a cylinder,only a half-core box, Fig. 107, isused. In it are made two semi-cylindrical cores, which, after…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
