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 74
nin the slide, Fig. 124. A cross-section of the pattern for this slideis shown in Fig. 125, in which the two overhanging parts are heldin position by the use ofpins. After being rammedup, the part A is removed,leaving the parts b and cstill in their positions in thesand, as shown in Fig. 126.These… … Fig. 128. Section of Casting, Fig. 127 60 PATTERN MAKING mold, to remove the projecting pieces. In such cases, the over-hanging pieces or projections must be made by using dry-sandcores. To illustrate this, we shall consider the pattern for the small cast-iron turbine case illus- * Groove to Fit…
Patternmaking
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