Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 256
achine, the upper one formeasuring the tendency of the journal to rotate. The upperscale-beam shows the total friction, or coefficient of friction, asthe graduations may be arranged. A thermometer gives thetemperature of the journal; a counter the number of revolu-tions. Let P equal the total… … Fig. 113.—RiEHLfis Oil-testing Machine. the coefficient of friction; n equal the arm of the bearinga the arm of the total pressure. Then do we have /-; /= *r. and Bfn = aP9 226 EXPERIMENTAL ENGINEERING. [§ 158. If / be maintained constant, and a -=- n be made the valueof the unit of graduation on…
Building materials · Machinery
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