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 198
Fig. 130—The rotary valve design for the three-cylinder engine forced into the hot coils. Considering that the coils workat a red hot temperature, the value of the steam pressureoften runs up to between 200 and 300 pounds per squareinch. When the plant is on test, a perforated asbestos casingis…
Machinery
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