Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 40
Board doubled breadthwise throughsmall semi-circle AB, then edge-wise through large semi-circle CD. at all. Thus simply by chang-ing the position of his plankhe in effect altered its formwith reference to the strain tobe borne, securing a decidedgain in rigidity. Let us re-peat his experiment,…
Inventions · Inventors
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