Some application phases of the ignitron rectifier locomotives on the Pennsylvania Railroad

WHEN two ignitron rectifier freight locomotives (class E2C and E3B) were first put into service on the Pennsylvania Railroad (PRR) approximately 2 years ago, the event could well have been taken as marking the golden jubilee of main-line electrification in this country. Certainly their successful design and operation are a fitting tribute to those who in 1902 first took a contract to equip a high-speed railroad line with an electrification using single-phase series-type railway motors.