. Operation of trains and station work and telegraphy . rinspection and repairs; the lower half of the field frame,armature, bearings, pulleys and all other parts can beremoved without disturbing the supporting framework. HEATING AND LIGHTING CARS 181 2. The adjustment of the belt tension is effected bymeans of a direct longitudinal movement of the genera-tor, which is the universal practice with all stationary beltdriven generators and motors, the roller bearings practi-cally eliminating all sliding friction. The generator notbeing pivoted is not tipped or otherwise drawn out of itsproper pos
. Operation of trains and station work and telegraphy . rinspection and repairs; the lower half of the field frame,armature, bearings, pulleys and all other parts can beremoved without disturbing the supporting framework. HEATING AND LIGHTING CARS 181 2. The adjustment of the belt tension is effected bymeans of a direct longitudinal movement of the genera-tor, which is the universal practice with all stationary beltdriven generators and motors, the roller bearings practi-cally eliminating all sliding friction. The generator notbeing pivoted is not tipped or otherwise drawn out of itsproper position in making wide adjustments of the belttension. ^ 3. The entire generator may be removed from thetruck by removing the guides on the end sill and crossbar and unbolting, the cross bar from the suspensionbars. 4. The iron work is of the simplest possible are no welds, and the amount of boring or otherwork on the truck frame is reduced to a minimum. Oneman and helper familiar with the work can install genera-tor on truck in four FIG. 81. GENERATOR FIELD COILS AND RETAINERS. Field Frame, Magnets and Bearings.—All fourforms of car generator are identical so far as the arma-ture, field magnets and brush mechanism are concernedand these parts are all interchangeable. The generatorproper is of the iron clad type, having four internal radial 182 RULES FOR MOVEMENT OF TRAINS salient poles. The poles are placed at an angle of 45°with the horizontal, two poles being in the upper, andtwo in the lower half of the generator, which is dividedlongitudinally in a horizontal plane. The casing, whichforms the yoke of the fields, is extended parallel with theaxis of the shaft and is then turned in at right angles,thus forming ends which are bored out and have fittedinto them round head-like castings which hold the arma-ture shaft bearings and oil wells. This construction wasoriginated by the Bliss Company. When these heads are
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadtrains, booky
