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 759
which b is thus kept filled up to a certain level. From b the oil descends through e toa, is converted into gas and tar, returning through d to 6. The tube d makes a short bend, and justenters below the fluid level in 6, so that the vapors of the decomposed oil must constantly pass through(he…
Mechanical engineering · Mechanics · Engineering
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