Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 109
engineindicators has Ijeen to reducethe weight of the parallelmotion, so as to reduce theerrors due to inertia whichoccur at high speeds with theheavier moving parts. The parallel motion of theThompson indicator is repre-■sented by Fig. 97.^ The points a and 6 arefixed. The link ac turnsabout a,… … Fig. 98. THE INDICATOR. 93 Thompson indicator, unscrew the small milled nut by which the piston-rod is attached to the pencil lever. Then unscrew the cylinder cover,and remove the cover, spring and piston. Unscrew the spring fromthe cover, and lastly from the piston. Proceed in the reverse order…
Steam-engines
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