. Electric railway journal . n lastedtwo hours, but since only one signal was affected thenumber of interrupted signal movements was small. During the month of January, 1916, five interruptionstook place. Two of them were due to trouble with thesignal lines, one being a break in the 2200-volt mainand the other being due to a short-circuit of a controlwire with a 600-volt feeder, burning out the lamps inan intermediate light signal as well as a relay. Duringthis month, also, there were two failures of one relay,which gave trouble intermittently for several days andwhich had to be replaced. The
. Electric railway journal . n lastedtwo hours, but since only one signal was affected thenumber of interrupted signal movements was small. During the month of January, 1916, five interruptionstook place. Two of them were due to trouble with thesignal lines, one being a break in the 2200-volt mainand the other being due to a short-circuit of a controlwire with a 600-volt feeder, burning out the lamps inan intermediate light signal as well as a relay. Duringthis month, also, there were two failures of one relay,which gave trouble intermittently for several days andwhich had to be replaced. The difficulty was found tobe clue to badly worn back contacts in the relay. Inter-mittent trouble also developed in one of the insulatedtrack joints. This was traced to original but unnoticedfaulty assembling, which brought about intermittentshort-circuiting at the joint. During the month of February two of the interrup-tions were due to snow and ice on the rail. This causedabnormally frequent movements at two signals and broke. SCRANTON & BINGHAMTON SIGNALS—VOLTAGE REGULATOR INPOWER HOUSE September 2, 1916] ELECTRIC RAILWAY JOURNAL 391
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