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 118
nings or recesses are required in the casting, andone is inclined to wonder why holes to correspond were Pattern Making 115 not made directly in the pattern itself. In some cases thisconld be done, as, for instance, in the .patterns shown atD, H, K and L of Fig. 68^ and in the case of the slots… … ® ^.
Machinery
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