. Electric railway journal . rvice isoff at night, the feeder cable, of course, is de-energized. July 7, 1917] ELECTRIC RAILWAY JOURNAL 23 The small telltale wire is connected to the busbar,and current is carried to the end of the feeder andback over the latter through the bank of lamps andthe relay to ground. Should anyone cut the feeder theloop circuit is broken and the relay armature drops tonormal position and causes an alarm bell to ring. Thenight operator then quickly dispatches someone outover the cable route to intercept the thieves. The sys-tem has worked very successfully. Commu
. Electric railway journal . rvice isoff at night, the feeder cable, of course, is de-energized. July 7, 1917] ELECTRIC RAILWAY JOURNAL 23 The small telltale wire is connected to the busbar,and current is carried to the end of the feeder andback over the latter through the bank of lamps andthe relay to ground. Should anyone cut the feeder theloop circuit is broken and the relay armature drops tonormal position and causes an alarm bell to ring. Thenight operator then quickly dispatches someone outover the cable route to intercept the thieves. The sys-tem has worked very successfully. Commutator End of Armature BearingProtected by Simple Device The commutator end of the armature bearing of theold-type GE-57 motor is usually protected by a sheet ofcanvas. This frequently comes off, works loose, or isdamaged by the end of the armature shaft, thus allow-ing dust and dirt to get in and grind out the bearing. This trouble has been overcome in the shops of theElmira Water, Light & Railroad Company by cutting off. Disk and Spri ngin Position Wire Spring Sheet Steel Disc- PROTECTION FOR END OF ARMATURE BEARING the end of the armature shaft, cutting a groove around1the inner circumference of the bearing and insertingthere a sheet of No. 14 gage sheet steel. The latter isheld in place by a piece of No. 6 spring steel wire bentto form an open circle and then sprung into the grooveafter the sheet-steel disk is in place.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
