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 252
£ 36. If the weight to be lifted is 1,800 pounds, howgreat a force at F is it necessary to apply to the belt ? Solution.—Let P represent.the force; then, by the rule.P X 40 X 27 X 36 = 1,800 x 12 X 9 X 12.or P X 38,880 = 2,333,800. Hence, P = ^4^^ = eoih., 38,880= the amount of force necessary to… … FIO. flOl. Fio. a. 28 MACHINE ELEMENTS. §5 the teeth are usually parallel to the axis of the wheel or toits shaft. Gears are said to be in mesh when the teeth of two wheels,respectively, engage each other or interlock. 43. In Fig. 21 is shown a pair of bevel gears in mesh.Of the two wheels shown,…
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