Williams, Henry Smith, 1863-, Williams, Edward Huntington, 1868-1944, joint author · New York and London, The Goodhue company · leaf 56
andBabylonians, for example, were virtually derricks; andno doubt the same people used the device in raisingstones to build their temples and city walls, and inputting into position such massive sculptures as theobelisks of Egypt and the monster graven bulls andlions of Nineveh and Babylon. The… … CRANES AND DERRICKS. The^ upper figure shows a floating derrick, the lower right-hand figure a combined derrickand weighing machine, and the lower left-hand figure a so-called sheerlegs, which is asimple derrick and windlass operated bv hand or bv steam power with the aid of com- HOW WORK IS DONE…
Industrial arts · Machinery
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