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 119
eFig. 78—Moulding of parted pattern with horizontal cylindrical coreprints, horizontal core 116 Model Engineering excessive to allow the pattern to be dra\\Ti at air,^nd ina great many cases it would be impossible to use a *^ greensand core due either to the length of the hole or tothe fact of its… … COHE PRINT
Machinery
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
