Technology Timeline.docx - Technology Timeline 1752 1990...

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Technology Timeline: 1752 - 1990 ("Technology timeline: 1752 - 1990," ) 1865 Web Offset Printing William Bullock introduced a printing press that could feed paper on a continuous roll and print both sides of the paper at once. Used first by the Philadelphia Ledger, the machine would become an American standard. It would also kill its maker, who died when he accidentally fell into one of his presses. 1870 Pneumatic Subway Working in secret to hide his operation from Boss Tweed, who opposes it, Scientific American publisher Alfred Ely Beach builds a pneumatic subway under Broadway in New York. Beach's single subway car, which features upholstered chairs and chandeliers, is driven along the 300 foot tunnel by a 100 horsepower blower. 1873 Typewriter Inspired by a Scientific American article featuring a British attempt at a typing machine, Christopher Latham Sholes invents his own. In 1873 he sells an improved prototype to Remington and Sons, gunsmiths, of Ilion, New York, who begin to mass produce the machines. Among the first works to be produced on a typewriter is Mark Twain's "Adventures of Tom Sawyer." 1874 Structural Steel Bridge Captain James Buchanan Eads finishes the bridge across the Mississippi at St. Louis. Using steel supplied by Andrew Carnegie, Eads incorporates a triple arch design, with spans measuring 502, 520, and 502 feet. The construction amazes the engineering world; Eads will be the first American
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engineer to be awarded the Albert Medal of the Royal Society of Arts in London. 1875 Mimeograph While using paraffin in an attempt to invent and improve telegraphy tape, Thomas Alva Edison discovers a way to make duplicate copies of documents instead. 1876 Telephone Alexander Graham Bell patents his telephone, built with the assistance of young self-trained engineer Thomas A. Watson. Elisha Gray, who developed a similar device at about the same time, will unsuccessfully challenge Bell's patent. 1877 Phonograph Working with a team of engineers at his Menlo Park, New Jersey, laboratories, Thomas Alva Edison perfects a system of sound recording and transmission. The first recording replayed is a voice saying "Mary had a little lamb its fleece was white as snow." 1879 Incandescent Light Bulb Backed by $30,000 in research funds provided by investors including J.P. Morgan and the Vanderbilts, Thomas Edison perfects an incandescent light bulb. The first commercial incandescent system will be installed at the New York printing firm of Hinds and Ketcham in January, 1881. 1880 Hearing Aid R.G. Rhodes improves on the ear trumpet with another primitive hearing aid. The device is a thin sheet of hard rubber or cardboard placed against teeth which conducts vibrations to the auditory nerve. 1884 Thrill Ride L.N. Thompson, founder of Coney Island's Luna Park, invites the first passengers to board his new
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thrill ride, the roller coaster. Thompson calls his new attraction the Switchback.
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