. American engineer . the dynamometer, recording apparatus,switchboard, gage board, work benches, stove and desk. Therear half of the car contains four upper and lower berths, toiletroom, closet and kitchen. The trucks are of the four-wheel archbar type, with heavy elliptical springs and extra heavy arch wheels are 34 in. in diameter and have steel tires. The caris lighted by electricity from an axle lighting system, as will beexplained later. the main pins. A mixture of glycerine and alcohol is used in theliquid chambers. These latter are connected to the recordingapparatus and gage
. American engineer . the dynamometer, recording apparatus,switchboard, gage board, work benches, stove and desk. Therear half of the car contains four upper and lower berths, toiletroom, closet and kitchen. The trucks are of the four-wheel archbar type, with heavy elliptical springs and extra heavy arch wheels are 34 in. in diameter and have steel tires. The caris lighted by electricity from an axle lighting system, as will beexplained later. the main pins. A mixture of glycerine and alcohol is used in theliquid chambers. These latter are connected to the recordingapparatus and gage board by 54-n- copper pipes. When the dy-namometer is not in use the arms are brought to the center andheld by four small jacks between the top of the arms and thecylinder casting. The dynamometer is so designed as to take andrecord safely a shock of 1,000,000 lbs. at the drawbar. RECORDING APPARATUS. The recording apparatus is placed just back of the dynamo-meter and the following records may be made on tlie chart:;. Recording Apparatus in Dynamometer Car Showing the Pens and Charts. 186 AMERICAN ENGINEER. Vol. 86, No. 4. Drawbar pull; drawbar push; speed; time either by five secondsor half-seconds; position of mile posts and stations; throttle open-ing; reverse lever; boiler pressures; indicator cards; train linepressure; brake cylinder pressure, and coal or oil fired. The
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
