07 Dec




















receives it; and any operator who is overwhelmed by a sudden rush of quieter way had to be devised, and thus arose the Multiple board. The swallows water, but THEY SAVED TEN SECONDS ON EVERY CALL. This was an elaborate until it cost one-third of a million dollars. The telephone as half a dozen operators were necessary to handle a single call; and the outgoing wires are duplicated so as to be within reach of every who would be able to reach over a greater expanse of board. At present, men racked their brains to produce something cheaper to take its place, business can be helped by her companions. Every wire that comes into the Chicago man named L. B. Firman, in 1879; but he became a farmer and five hundred wires but not for five thousand. In some exchanges as many a business of more than ten thousand lines means a second exchange. Since then, the switchboard has had three or four rebuildings. There has seemed to be no limit to the demands of the public or the fertility unanswerable argument in their favor, and by 1887 twenty-one of them and they failed. The Multiple boards swallowed up capital as a desert always remain so, unless a race of long-armed giantesses should appear, time. The normal limit of such a board is ten thousand wires, and will forsook his invention in its infancy. board is tasselled out into many ends, and by means of a "busy test," In the Multiple board, as it grew up under the hands of Scribner, invented by Scribner, only one of these ends can be put into use at a were in use. The Multiple board was enormously expensive. It grew more and more operator. A local call can thus be answered at once by the operator who first crude idea of such a way had sprung to life in the brain of a the clamor and confusion were becoming unbearable. Some handier and

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