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 154
view, one side of the box being removed to showthe valve seat v, and the core prints x, z, and y, which form recessesin the core into which the upper ends of the two steam-inlet coresand the central exhaust-passagecore are placed. Q is an endview of the box with one endremoved-, and R is a view… … Fig. 250. Exhaust Port Core Box is illustrated at S, Fig. 250, asThe dotted lines show the manner inwhich the passage is widened to retain the full size of the openingthroughout. 138 PATTERN MAKING Inlet Passages. Only one core box will be needed for the twosteam ports. Three views of the box are…
Patternmaking
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