. Operation of trains and station work and telegraphy . 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 pla
. Operation of trains and station work and telegraphy . 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. FIG. 82. END VIEW OF GENERATOR, SHOWING BEARING HEAD AND HAND HOLE COVER REMOVED, EXPOSING AUTOMATIC BRUSH MECHANISM. in place, the generator is almost hermetically sealed, andis absolutely dust and water proof. A suitable hand-holeis provided in the generator casing for purposes of in-spection, etc. The two heads which carry the armature bearings areeach held in place by four bolts, two of which are tapped HEATING AND LIGHTING CARS 183 into each half of the generator casing. By this construc-tion, the lower half of the generator may be removed,leaving the armature in the upper half, or the armaturemay be removed with the lower half. The heads beingnicely fitted to the casing, insure perfect alignment ofthe armature shaft, no steady pins or other truing de-vices being required.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadtrains, booky
