. American engineer and railroad journal . olution counter in the carwhich shows therevolution of thedriving wheelsand also to theelectric signalsfor indicatorcards at the frontend of the en-gine. The dynamo-meter cylindersare shown in They are madein three castingsheld together bystud bolts, notshown in the August. 19U0. AMERICAN ENGINEER AND RAILROAD JOURNAL, ^41 drawing. Tho effective area of the largest cylinderis BO sq. in., of the second 30 sq. in., and of thesmallest .5 sq. in. It is intended that the workingpressure of the oil in the cylinders is to be from300 lbs. per sqviaie i
. American engineer and railroad journal . olution counter in the carwhich shows therevolution of thedriving wheelsand also to theelectric signalsfor indicatorcards at the frontend of the en-gine. The dynamo-meter cylindersare shown in They are madein three castingsheld together bystud bolts, notshown in the August. 19U0. AMERICAN ENGINEER AND RAILROAD JOURNAL, ^41 drawing. Tho effective area of the largest cylinderis BO sq. in., of the second 30 sq. in., and of thesmallest .5 sq. in. It is intended that the workingpressure of the oil in the cylinders is to be from300 lbs. per sqviaie inch lo 1,000 lbs. per squareinch, and for this range of i)ressures cylinder has sufficient capacity for the heaviest freightservice. No. 2 will be used when working with atrain of ordinary tonnage, while No. 3 will be usedfor passenger service. In this last case the work-ing pressure may be somewhat higher. If it shouldbecome necessary, cylinders 1 and 2 could becoui)led up in tandem, thus giving an effectivepiston area of 90 sq. EhID U View EiCrATION Fig. 5.—Table and Plan of Dynamometer, Recording Gauge and Speed Recorder. The piston rod is connected to a draw-bar yoke of specialdesign and is so arranged that when the piston travels for-ward too far beyond its working position the pull is takenon the springs of the ordinary draw-bar rig. Pushes on therod are likewise received immediately upon these electric tell-tale arrangement notifies the operator whenthe piston passes its proper limits on account of the leakageof oil. The cylinders are reamed, the pistons ground and thepiston rod ground where it moves through the stufflng-boxes were designed particularly for this arrange-ment and consist essentially of the inner sleeve or gland,which is ground internally to fit the rod and grooved as shownto retard the leakage. The forward end of the gland is groundspherical and fits into a ground spherical seat in the stuffing-box casting. This s
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
