Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 132
m. The messages are sent bydepressing a series of keys marked with the different lettersand numerals, as shown in the illustration. When a key is depressed it raises a pin, and this pincatches the chariot A, which rotates the type-wheel, andsends a current to the distant station, causing the paper… … 120 ICLECTRICITY IN MODERN L/FE. transmitted directly tlirough the line by means of aninstrument worked by hand, and the greatest speedattainable does not exceed thirty or thirty-five words perminute. In addition to this, an operator working for somehours at his maximum speed will naturally become…
Electric industries · Electricity
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