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American apparatus arc lighting armature automatic bamboo battery became Bell Boston building cable carbon cent central station Charles Batchelor circuit close commercial conductors connected devices diaphragm dynamo early Edison Company electric light engine experiments fact filament gold Gould Henry Villard hundred idea illumination incandescent lamp industry installed instruments Insull interesting invention inventor John Kruesi Kruesi laboratory later locomotive machine magnet Menlo Park ment meter methods miles months motor never night operator Pacific Telegraph Company paper patent Pearl Street station period phonograph plant platinum Port Huron practical quadruplex railroad received record resistance Samuel Insull says sent soon started stock ticker story success tele Telegraph Company telephone thing tion to-day told took train transmitter underground Upton vibrations Villard wanted Western Union wire York young
Page 210 - There was a little girl Who had a little curl Right in the middle of her forehead When she was good, she was very, very good And when she was bad, she was HORRID.
Page 194 - In a similar manner, it is conceivable that cables of telephone wires could be laid underground, or suspended overhead, communicating by branch wires with private dwellings, country houses, shops, manufactories, etc., etc., uniting them through the main cable with a central office where the wires could be connected as desired, establishing direct communication between any two places in the city.
Page 346 - Presidents of the American Society of Civil Engineers, the American Institute of Mining Engineers, the American Society of Mechanical Engineers, the American Society of...
Page 178 - The method of, and apparatus for, transmitting vocal or other sounds telegraphically, as herein described, by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds, substantially as set forth.
Page 216 - Letter writing and all kinds of dictation without the aid of a stenographer. 2. Phonographic books, which will speak to blind people without effort on their part. 3. The teaching of elocution. 4. Reproduction of music. 5. The 'Family Record...
Page 171 - Suppose that a man speaks near a movable disk, sufficiently flexible to lose none of the vibrations of the voice, that this disk alternately makes and breaks the currents from a battery : you may have at a distance another disk, which will simultaneously execute the same vibrations.
Page 171 - We know that sounds are made by vibrations and are made sensible to the ear by the same vibrations, which are reproduced by the intervening medium. But the intensity of the vibrations diminishes very rapidly with the distance, so that even with the aid of speaking tubes and trumpets it is impossible to exceed somewhat narrow limits.
Page 99 - The manager asked me when I was ready to go to work. ' Now,
Page 36 - Twenty-five cents apiece, gentlemen! I haven't enough to go around!' I sold all out, and made what to me then was an immense sum of money.