. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . hings riveted together between wrought ironend-plates, the completed pole pieces being bolted to the field coils are wound with asbestos covered round wire, andare treated with a special compound to render them moistureproof. The armature is of the ventilated slotted drum type,14 inches in diameter. It is built up of sheet steel punchings 44 ELECTRIC RAILWAY TEST COMMISSION assembled and keyed on a steel shaft and clamped betweenmalleable iron end-plates. There are 39 slots and 11
. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . hings riveted together between wrought ironend-plates, the completed pole pieces being bolted to the field coils are wound with asbestos covered round wire, andare treated with a special compound to render them moistureproof. The armature is of the ventilated slotted drum type,14 inches in diameter. It is built up of sheet steel punchings 44 ELECTRIC RAILWAY TEST COMMISSION assembled and keyed on a steel shaft and clamped betweenmalleable iron end-plates. There are 39 slots and 117 coils, ,three coils per slot. At the pinion end the winding is madeentirely open, for purposes of ventilation. The commutator is10J inches in diameter and 4H inches long, and has 117 bars. The motors have a nose suspension, and are so constructedthat the armature may be either dropped with the lower halfof the field or the latter may be swung down alone for pinion is of forged steel with machine-cut teeth. The axlegear is made of cast steel in two parts which are bolted together. Fig. 8. — Westingfiouse No. 56 Motor. (Motor open.) and keyed to the axle. The diametral pitch is three per inch,and the face is five inches. The pinion has 18 teeth, and thegear has 64 teeth. The gear case is of malleable iron and iscast in two parts, the upper half being bolted to the upper halfof the field frame, and the lower half is attached to the upperhalf. The weight, complete with gears and gear case, is 3,000pounds. Without gears and gear case, the weight is 2,685pounds. The weight of the armature, complete with commu-tator and winding, is 720 poimds. The weight of a doubleequipment, including motors, controllers, diverters, circuitbreakers, wiring, and other details, is approximately 7,200pounds. SERVICE TESTS OF ELECTRIC CARS 45 The Magnetic Brake. The power brake, which forms a part of the equipment of thecar, consists of the magnetic-brake equipment of the Westing-h
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Keywords: ., bookauthorlouisian, bookcentury1900, bookdecade1900, bookyear1906
