. Electric railway journal . neral Electric No. , two K-35 C. Air brakes, National with A-4, 16-ft. , Consolidated , Baldwin-Pullman No. complete, 52,000 lb. The report considers the several claims of the RailwayImprovement Company in the order in which they havebeen stated above, and then summarizes the results of thetests on the Van Buren Street line. It applies the resultsestablished on this single line to the entire system of theChicago Railways, and concludes with a statement show-ing a total net saving on 1560 cars for one year
. Electric railway journal . neral Electric No. , two K-35 C. Air brakes, National with A-4, 16-ft. , Consolidated , Baldwin-Pullman No. complete, 52,000 lb. The report considers the several claims of the RailwayImprovement Company in the order in which they havebeen stated above, and then summarizes the results of thetests on the Van Buren Street line. It applies the resultsestablished on this single line to the entire system of theChicago Railways, and concludes with a statement show-ing a total net saving on 1560 cars for one year in kw-hours of current and increased life of brakeshoes of$265, SAVING IN POWER CONSUMPTION Previous to the installation of the coasting time clockson the cars the energy fed to the Van Buren Street linewas carefully metered for five weeks and the car milesrun and the ton miles moved were determined. The energyconsumption was found to be kw-hours per car mileand 141 watt hours per ton mile. These figures include. Fig. 5—Chicago Coasting Tests—Coasting Clock power for operating only the car motors and the air-brakemotor compressor. A special series of tests to determinethe current consumption of the heaters in the steel carswas made on March 6. The average result of fifteen-second voltage and ampere readings taken on four tripsover the length of the line showed the following hourlyconsumption of energy for the electrical heaters: At Western Ave. At Van Buren House. Substation. One point of heat kw kw Two points of heat kw kw Three points of kw kw The foregoing energy consumption demand for theheaters was used in reducing the total metered output forthe line for the five weeks of the test during which theheaters were used to a basis of energy for car propulsiononly. The accompanying curves, Fig. 1, show the energyconsumption for the heating and lighting as fed from thetwo sections of supply plotted with the
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