Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 859
long is used for securingproper alignment of the joint. Several views of this tube are shownin Fig. 614. The wood is usually treated with creosote or dead oil of coaltar in the following manner: The lumber is laid on cars and runinto a large steel cylinder six feet in diameter, which is closed by… … FIG. 614.—PUMP LOG CONDUIT. pump is next applied to the tank, exhausting all air and steam, thepump maintaining a vacuum of about twenty-six inches. Thisevaporates practically all of the sap and water from the wood, thusseasoning the timber. The next step in the process is to pump creo-sote oil…
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