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 238
d be plenty large enoughto effect a free and easy discharge of the steam. Theproportion shown in the drawing is about right. Somuch for safety valves. There are innumerable designs for model steam andwater cocks, and it frequently behooves the model engi-neer ju&t what type is most suitable for… … Hand Wheel ValveBody Joint
Machinery
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