. Operation of trains and station work and telegraphy . 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 r
. Operation of trains and station work and telegraphy . 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 FIG. 83. COMPLETE GENERATOR ARMATURE AND PULLEY,AUTOMATIC BRUSH MECHANISM AND ARMATURE COIL. By removing the head casting at the commutator endof the generator, and detaching the flexible cables fromtheir respective brush-holders, the entire brush mechan-ism, as well as the armature, may be removed withoutdisturbing any of the other parts. Armature.—The armature is of the four-pole drumtype, having a two-circuit singly re-entrant drum wind-ing of the straight-out, or barrel type. The coils arewound on formers and afterward placed on the core, thusproviding a perfectly balanced winding, both electricallyand mechanically. The armature coils are assembled on the armature inthe usual manner and specially banded. With this con- 184 RULES FOR MOVEMENT OF TRAINS struction, it is possible to remove a single damaged coilby simply lifting out one-quarter of the coils,, when thedamaged coil can be replaced by a new one. While thisfeature is extremely valuable in facilitating repairs, andhas be
Size: 2494px × 1002px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadtrains, booky
