. Electric railway journal . otor revolved the wheel and the operatingbelt, thus producing an arm-like motion of the signalpendulum, and caused the bell, mounted on top of thecast-iron box containing the motor, to ring. During theday the bell furnished a good warning, while at nightthe illumination afforded by the electric lights, both redand white, made this signal decidedly prominent. Thecontactors on the ordinary lines were placed about 1200ft. preceding the crossing, while the cut-out contactorwas placed just over the crossing. The approach con-tactor sent the annunciation into the relay a
. Electric railway journal . otor revolved the wheel and the operatingbelt, thus producing an arm-like motion of the signalpendulum, and caused the bell, mounted on top of thecast-iron box containing the motor, to ring. During theday the bell furnished a good warning, while at nightthe illumination afforded by the electric lights, both redand white, made this signal decidedly prominent. Thecontactors on the ordinary lines were placed about 1200ft. preceding the crossing, while the cut-out contactorwas placed just over the crossing. The approach con-tactor sent the annunciation into the relay apparatus,thence through the resistance bank and into the motorof the flagman which operated until car had passedthrough the cut-out contactor; and then the reversemovement of the walking beam relay stopped operation. Later in the year 1912 the construction of this flag-man was taken over for further development by theRailway Specialties Company, Inc., of Los Angeles, installation of the motor-driven belt-type flagman. FIG. 1—AUTOMATIC FLAGMAN IN OPERATION 234 ELECTRIC RAILWAY JOURNAL [Vol. 50, No. 6 was discontinued and a motor-driven worm-gear typeadopted, the principle of its operation, however, beingpractically the same as the motor-driven belt type. TheRailway Specialty Companys signal was briefly de-scribed in the issue of the Electric Railway Journalfor Jan. 23, 1915, page 176. It should be said that theflagmen of the old belt type were difficult to maintainas the belt was constantly breaking, thus greatly in-creasing the failures in operation. During 1916 thetype was again improved by the adoption of a mag-netically-operated device. This is a much better ma-chine than the other two types formerly installed be-cause it has no motor-driven parts. The pendulum re-sponds more rapidly, the operations being smoother andmore active, and the shaking of the machine has beenminimized, thus reducing maintenance. In the former types whenever the flagman was cut in
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