The principles of pattern making, written specially for apprentices and students in technical schools (1900)
Horner, Joseph Gregory, 1847-1927 · London, New York, Pitman · leaf 42
entreline E-E, are carried straight up to facilitate delivery.This is shown at F in the figure. The alternative tothis is shown at G\ In this latter case the branchcannot be lifted vertically with the top part of thepattern, because of the sand at c c, but must be kept JOINTS AND MOULDING. 31 loose… … Fig. 16. Casting of Steam Chest. at J. If made fast, the sand would become torn on beingwithdrawn from them. The guide strips K K, forthe slide valve, are skewered on loosely and withdrawnsideways, because the sand overlying them would pre-vent them from being lifted with the body of thepattern. 32…
Patternmaking
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