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 139
Fig. 212. Turued-Up Flanges and Core Prints shown by the dotted line, and the side of a at e cut away to the samecurve as 6, giving the same results as in the former method. Pipe Elbow. The pattern for the 2-inch elbow, Fig. 209, isanother illustration of how such work may be simplified, and… … ^/ a c Fig 213. Construction of Core Box for Elbow Fitting To construct the double pattern, a ring is first turned like Fig. 211,a cross-section of which is a semicircle, as shown in the lower right-hand corner of the drawing. This ring is cut into quarters, and thefour pieces e, e, e, and e make…
Patternmaking
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