A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 126
ved that the barrel of theindicator is bored out to two diameters, the larger part INDICATOES FOE GAS ENGINES. 1]5 having an area equal to twice that of the smaller. Twopistons are supplied, to either of which the same springmay be fitted. In this way a spring marked 100 wil]register 1001b. per… … Fia. 75. —Crosby Indicator. 1 in. vertical movement of the pencil corresponds to 200 lb.pressure per square inch. With this instrument a varietyof pressures may be dealt with by a small assortment ofsprings, a feature which readily recommends itself to theeconomist. In both designs the working…
Internal combustion engines
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