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 677
nches square. In the centre across are the two keelbeams P P, 244- feet long and 12 inches square, and which cany 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… … The sections are connected together, in case of need, by double tie beams, which can be readilyslipped out, by withdrawing the nuts and screws by which they are secured. On the cross beams D D, Fig. 1737, on each side is a rack and pawl, enabling the chock blocks E to bereadily moved, and secured…
Mechanical engineering · Mechanics · Engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
