Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 250
Fig. 454. Fig. 455 Fig. 456. Fig. 457. … Fig. 458. On the Strength of Wrought-Iron Columns.—In theformer editions of this work the strength of wroughtcolumns was shown by curves of the average breakingloads (Fig. 461), as determined by experiments on thePhoenix, Keystone, Piper, and open columns with flatends. Vertical distances represent…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-167-140.webp)
