I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 271
Suppose that the part a of the free bightis pulled downwards, that is, in the direction of the arrow.Evidently, the upper pulleys will both turn in the directionof the hands of a watch, as indicated by the curved arrow.Then, the left-hand part of the bight supporting the mov-able pulley will move… … I §5 MACHINE ELEMENTS. 47 over the large pulley than the right-hand side of the bightwill run downwards over the small pulley. The result isthat the upward motion of the movable block will be equalto one-half the difference of the distances passed over inthe same time by fixed points in both sides…
Bookkeeping · Textile fabrics · Textile factories
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