. Electric railway journal . pe and includes a source ofelectrical energy in the form of storage batteries, which,with suitable switchboard and control appliances, arelocated in the lower floor of the tower. There is aneighty-eight-lever frame, Model 2, unit-lever-type elec-tric interlocking machine equipped with sixty-fourworking levers which control seventy-five functions—switches, derails and signals. The switch and derailoperating mechanisms are actuated by 110-volt electricmotors. These operate the switches and derails to nor-mal or reverse position, and lock them in such position, when t
. Electric railway journal . pe and includes a source ofelectrical energy in the form of storage batteries, which,with suitable switchboard and control appliances, arelocated in the lower floor of the tower. There is aneighty-eight-lever frame, Model 2, unit-lever-type elec-tric interlocking machine equipped with sixty-fourworking levers which control seventy-five functions—switches, derails and signals. The switch and derailoperating mechanisms are actuated by 110-volt electricmotors. These operate the switches and derails to nor-mal or reverse position, and lock them in such position, when the proper lever in the machine is signal operating mechanisms of the semaphoretype are provided, which are also actuated by 110-voltelectric motors, and which move the semaphore arms topositions corresponding with the position of the leversin the interlocking machine. High signals are semi-au-tomatic, that is, they are controlled by their respectivetrack circuits, also by their respective levers in the in-. VIEW AT END OF FOUR-TRACK LINE FROM LOS ANGELES,SHOWING MAIN CROSS-OVER AND INTERLOCKING TOWER terlocking machine. The dwarf signal mechanisms areof the semaphore type, but are actuated by a solenoidarrangement. These signals govern low-speed move-ments, also movements against the current of protection is given by track circuitswhich, in connection with suitable control appliances,prevent the display of a proceed indication unless thetrack is clear and switches in proper position. In this plant the operation of each switch, derail orsignal mechanism is effected by electric energy, and inaccordance with the demands of safety provision ismade to determine whether the switch, derail or signalhave responded to the manipulation of their respectivelevers, and have operated to the proper position. This May 15, 1915] ELECTRIC RAILWAY JOURNAL 947
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
