. Electric railway journal . -typecontroller and four GE-247 ventilated, inside-hung mo-tors. Straight air brakes with the emergency featurewill be installed and a conductors valve will be mounted under the rear platform with suitable foot-operatingplunger. This plunger, while accessible to the con-ductor, will not be in a position where it could be oper-ated accidentally by a passenger. The trucks will beof the Brill 77-E type, with a graduated spring arrange-ment to give good riding qualities at all loads. Regulator for Car-Lighting Circuits Experiments have been carried on for the past twoy
. Electric railway journal . -typecontroller and four GE-247 ventilated, inside-hung mo-tors. Straight air brakes with the emergency featurewill be installed and a conductors valve will be mounted under the rear platform with suitable foot-operatingplunger. This plunger, while accessible to the con-ductor, will not be in a position where it could be oper-ated accidentally by a passenger. The trucks will beof the Brill 77-E type, with a graduated spring arrange-ment to give good riding qualities at all loads. Regulator for Car-Lighting Circuits Experiments have been carried on for the past twoyears on the Milwaukee Northern Railway, betweenMilwaukee and Sheboygan, to develop a regulator tokeep a practically constant voltage on the car-lightingcircuit, irrespective of the fluctuations in voltage inthe trolley circuit and so secure good car was found during these experiments that with a fluc-tuation in voltage not exceeding 7 per cent in the car-lighting circuit essentially uniform illumination could. VOLTAGE REGULATOR FOR CAR-LIGHTING CIRCUITS be had if tungsten lamps are used, and a regulator tocomply with these conditions has been developed by theThomas S. Watson Company of Milwaukee. As first arranged, the regulator took care of four lampcircuits in multiple, the regulator being arranged soas to take care of a range of from 450 to 650volts. With this plan, however, as the headlight wasin series with the lamps in the car, if one or more cir-cuits went out, the headlight became dimmed so muchas to be unsatisfactory. It was decided, therefore, toadopt a regulator of the constant current type, putting
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