Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 685
ches square. In, the centre across are the two keelbeams P 1, 24$ feet long and 12 inches square, and which carry five keel blocks C. This upper plat-form rests on the foundation truss girders F, by means of posts and timbers scarfed in, and is furthersecured by four stout iron ties. The bottom…
Mechanical engineering
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