. Electric railway journal . ht-ning arresters, disconnecting switches,fuses and air-braking equipment. It willalso be noted that the motor car carriesboth a pneumatic pantograph and twotrolley poles. The latter are necessary,as the old city overhead work is not suit-able for the pantograph. The latter iscarried on a wooden framing and fourcarefully grounded insulators. When a car is leaving the zoneto enter the section it passes a specialpole arm, which strikes an upright leverof the car reverser. This shock has theeffect of turning the reverser to such anangle that the , circuit
. Electric railway journal . ht-ning arresters, disconnecting switches,fuses and air-braking equipment. It willalso be noted that the motor car carriesboth a pneumatic pantograph and twotrolley poles. The latter are necessary,as the old city overhead work is not suit-able for the pantograph. The latter iscarried on a wooden framing and fourcarefully grounded insulators. When a car is leaving the zoneto enter the section it passes a specialpole arm, which strikes an upright leverof the car reverser. This shock has theeffect of turning the reverser to such anangle that the , circuit becomes oper-ative. When the car is returning thelever, of course, is thrown to its originalposition, and the circuit becomes op-erative. The alternating current mustpass through the reverser, the high-tension fuses, andthence to the transformer under the car. This circuit iscarried in grounded metal conduits. The transformer is of the oil-cooled type made for 55kva, is cvcles, and is grounded. It takes current at 6000. Lyons Single-Phase Tramways—Catenary Constructionin the Country fore furnished by a central instead of end platform. Thereis a motormans cab at each end of the car. As iscustomary in European cities, the motor cars are frequentlyoperated with trailers. The motor trucks are of the Brillmaximum traction type, and were made in America. They Lyons Single-Phase Tramways—Span Construction, withChannel Poles and Carriers to 6600 volts and transforms it to any desired potentialbetween 100 and 315 volts. The controllers are furnishedwith three drums, two of which correspond to the runningand reverser cylinders of the types, while the thirdregulates the speed when the motors are working with September 4, 1909.] ELECTRIC RAILWAY JOURNAL. 353 alternating current. There is only one main controllerhandle, and in passing from one current to another the mo-torman shifts his handle. Both motors of the equipment are mounted on one truck. a half-hourly service on we
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