. The Street railway journal . dcoils, which are held firmly in place by steel spring coils are wound with asbestos-covered wire. They areheavily taped and are treated with specially prepared insulatingcompounds, which render them practically moisture washers provide adequate protection against me-chanical injury. The armature core is formed of circular punchin„s of soft April 23, 1904.] STREET RAILWAY JOURNAL. 03? steel, built up upon a cast-iron spider. Ventilating spaces areprovided in the core at right angles to and parallel with theshaft. The spider is pressed
. The Street railway journal . dcoils, which are held firmly in place by steel spring coils are wound with asbestos-covered wire. They areheavily taped and are treated with specially prepared insulatingcompounds, which render them practically moisture washers provide adequate protection against me-chanical injury. The armature core is formed of circular punchin„s of soft April 23, 1904.] STREET RAILWAY JOURNAL. 03? steel, built up upon a cast-iron spider. Ventilating spaces areprovided in the core at right angles to and parallel with theshaft. The spider is pressed on and keyed to the shaft. Thecommutator also is mounted on the same spider, and the shaftcan thus be taken out and renewed, should this be necessary,without disturbing any other part. The armature is wound with machine formed coils imbeddedin rectangular open slots and held in place by band wires sunkin grooves. It is, therefore, wholly iron-clad, and the winding-protected against mechanical injury. Canvas caps protect the. The armature bearings consist of solid bushings of cast-iron,lined with babbit metal, and keyed in place within heavy hous-ings. The bearing- at the commutator end of the motor is ins. long, and that of the pinion end, 9 long. Both are bored for a 3^-in. shaft. The axle bearing shells aremade of cast-iron divided horizontally and held between pro-jections cast solid with the upper and lower halves of the motorframe. The bearings are 1 i ins. long, and lined with babbitmetal. They will accommodate a shaft 6l/2 ins. or less indiameter. The bearing boxes are packed with wool waste
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
