Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 109
red off in order to facilitateits being *draA\Ti, as sho^ATi in Fig. 70B. It ^\W\ beseen that if the sides were tapered in the opposite direc-tions the pattern, could not be withdra^xTi without pulling lOG Model Engineering the sand up with it and spoiling the mould, and that ifthe sides were made… … Fig. 68—Typical one-piece patterns standing in the center of the mould, so that the moltenmetal running around it will form the hole in the casting.Such a column of sand formed directly by the pattern isknoA\Ti as a ^^green sand core. The subject of cores willbe taken up later. Every side of a…
Machinery
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