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 (1916)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 67
is turned upside down, and the portion Cof the pattern is lifted out. The portion D is lifted out of the dragin the same way. Cores for Hollow Castings. In the case of molding a hollowobject, the internal cavity in the casting is formed by means of adry-sand core which rests in impressions made in… … Fig. 104. Flask Showing Parting
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
