. The Street railway journal . i in. apart. As the time scale of the diagram is 1 in. =16 seconds, the two adjacent curves are two seconds apart, hori-. FIG. 2.—OPERATORS DISC zontally. The pens not standing vertically, had to be weightedto keep them in constant touch with the paper. The wiring diagram of the apparatus is shown in Fig. moving strip of paper is driven by a powerful clock locatedbeneath the table, through the medium of two solid brass cyl-inders, one of which is geared to the clock mechanism. Themovement is controlled by a time clock operating through anelectromagnetic esc
. The Street railway journal . i in. apart. As the time scale of the diagram is 1 in. =16 seconds, the two adjacent curves are two seconds apart, hori-. FIG. 2.—OPERATORS DISC zontally. The pens not standing vertically, had to be weightedto keep them in constant touch with the paper. The wiring diagram of the apparatus is shown in Fig. moving strip of paper is driven by a powerful clock locatedbeneath the table, through the medium of two solid brass cyl-inders, one of which is geared to the clock mechanism. Themovement is controlled by a time clock operating through anelectromagnetic escapement. Power for operating the variouselectromagnets, with the exception of those mounted in thetime clock, is drawn from the third rail through suitable resist-ances. It was necessary to connect with the relay board onthe car to secure continuous operation, regardless ofwhether a train is moving or standing still. In the diagram ofFig. 5 the connection of the car wiring with the third-rail shoeis shown through the main switch, main fuse, wattmeter ter-minals and reverser of the multiple-unit control system. Fromthe main switch a tap leads to
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
