Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 812
WARMING AND VENTILATION. 805 which the heated current is prevented frons flowing along the particular branch so closed. But whenever a branch is closed as at s, it is necessary also to close the other end t of the same brancli, oilier-wise tlie water in tlie descending return pipe R, being warmer…
Mechanical engineering · Mechanics · Engineering
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