A textbook on the locomotive and the air brake (1901)
International Correspondence Schools · Scranton, Pa., International textbook co · leaf 362
this the different classes of levers must be studied. SIMPLE LEVERS. 54. The Straiglit Lever.—A lever is any bar that iscapable of being turned about a fixed axis or pivot, called thefulcrum, as in Figs. 3,4, and 5. In these figures, W, the objectto be lifted, is called the weight; the force F,… … 42 THE NEW YORK AIR BRAKE. §17 the lever, while the part Fc between the fulcrum and the poweris called the power arm. The fulcrum F, it is to be remembered, is stationary, and thelever is perfectly free to turn on it. Now, if the weight IF isgreat enough, it will cause the lever to turn or rotate…
Locomotives · Locomotive boilers · Railroad cars
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
