Experimental engineering and manual for testing (1903)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & sons; [etc., etc.] · leaf 187
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. Sj.—RiEHLfis Oil-testing Machine. the coefficient of friction; ;/ equal the arm of the bearing;a the arm of the total pressure. Then do we have P F and Fn = aP = aBp,Bfn = aP, ._aP^ap_ ^ ~ Bn n 198 EXPERIMENTAL ENGINEERING. [§ I $8. If / be maintained constant, and a -^ nh^ made the valueof…
Building materials · Machinery
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