Experimental engineering and manual for testing (1903)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & sons; [etc., etc.] · leaf 477
K, /, Z, M,but 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. 180.—Section of the Crosby Indicator, 385. The Calkins Indicator.—The Calkins indicator isone of the recent forms worthy of notice. It possesses, asshown in Fig. 181, the usual features of steam-engine indicators,modified by details of construction in its moving parts and formof…
Building materials · Machinery
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