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 320
iron S N, N S,about one-half the length of the bars, and of the same breadth, as in the method of Du Hamel; theremaining 10 bars are separated into two combined systems A B, of 5 bars each, placed on one of thebars N S, with their remote and opposite poles C in contact, and their lower poles n s… … and placed at the back of the others, as at A B, whilst the two interior bars of each system C s, C n,are withdrawn, and subjected to the same operation as the preceding; in this way we continue tostrengthen each pair of bars by the acquired power of those last touched, until the whole become…
Mechanical engineering · Mechanics · Engineering
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