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 106
Fig. 167. Sheave Pulley Pattern with GrooveMade with Dry-Sand Core PATTERN MAKING 89 If the wood has been well seasoned, and the work carefullydone, a perfect 6-inch sheave-pulley pattern will be obtained. Thepattern for a sheave pulley has been explained because it embracesso many profitable… … Radial Section Fig. 168. Core Box for Sheave Pulley building up, but especially in chucking and turning, all of whichmust be done with great care and accuracy. Dry=Sand Ring Coring. A more practical way to producecastings of a sheave wheel would be to construct a solid wood pat-tern with a core…
Patternmaking
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