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 105
turn-ing off the projection on thecenter of the wooden chuckand making a recess insteadto receive the projection onhy proceed with this secondhalf as with the first. The 1-inch holes in thew^eb are bored out with a1-mch center bit, which,when well sharpened, doesnot split or splinter the thinwebs… … 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…
Patternmaking
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