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 554
nts K, I, L, Mtbut keep them well oiled with refined porpoise-jaw oil, whichis furnished with each instrument. The tension on the drum-spring should be increased ordiminished according to the speed at which the instrument isused, by means of the thumb-nut on top of the drum-spindle. Use a spring of… … Fig. 234.—Section of the Crosby Indicator. 385. Indicators with External Springs.—The Bachelderindicator, shown in Fig. 235, has a flat spring that is flexed overa movable fulcrum by the steam pressure acting on the piston.The scale of the spring is changed, through a limited range, bymoving the…
Building materials · Machinery
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