The practical draughtsman's book of industrial design and machinist's and engineer's drawing companion : forming a complete course of mechanical, engineering, and architectural drawing (1863)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Johnson, William, 1823-1864 · Philadelphia : H.C. Baird · leaf 193
^^^^^^^^^^^^^^\ Nv^yj§»» beneath the generator on that side. This conveys the currentinto the external longitudinal flue, k, surrounding and covering ina great portion of the outer side and bottom of that generator;and this flue, K, theii forms the duct for the traverse of the currenta second time…
Mechanical drawing
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