. Electric railways, theoretically and practically treated . -Current curve taken by graphic recording ammeter on one ofthe Schenectady-Albany cars equipped with four GE-73motors. This car was climbing a heavy grade and the motorswere in series-ordinary type of portable instrument is obtained. The in-strument records with ink, the pen consisting of a capillarytube through which the ink is siphoned, producing a per-manent record. This instrument will record violent fluctu-ations of current and will stand heavy vibrations. Attachedto the needle at its rear extremity is a flat projection of cop-p
. Electric railways, theoretically and practically treated . -Current curve taken by graphic recording ammeter on one ofthe Schenectady-Albany cars equipped with four GE-73motors. This car was climbing a heavy grade and the motorswere in series-ordinary type of portable instrument is obtained. The in-strument records with ink, the pen consisting of a capillarytube through which the ink is siphoned, producing a per-manent record. This instrument will record violent fluctu-ations of current and will stand heavy vibrations. Attachedto the needle at its rear extremity is a flat projection of cop-per which moves in the field of two electromagnets. This RECORDING INSTRUMENTS. 57. 58 ELECTRIC RAILWAYS.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkvannostrand
