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Technology - Telegraphy - Illustration and Description of the Telegraph, or the Newly Invented Teletype Machine in Paris, and Its Internal Mechanism. By an Eyewitness. With engravings depicting this machine at the Louvre, both at rest and in operation. Second edition, completely revised (sic) and expanded with an additional copperplate and an appendix. Includes easy-to-follow instructions for constructing telegraphs at extremely low cost, enabling communication over considerable distances. With 5 copper plates, 1 of which is colored. Leipzig, Baumgärtner, 1795, 16 pp., 22 x 13.5 cm. Contemporary cover (slightly browned, with foxing and wear). Engelmann, Mechan. 2—Wheeler Gift, see 626—Poggendorff, see I, 419.—Expanded from the first German edition published in the same year to include instructions for constructing a telegraph. In 1793, the engineers Claude and Ignace Urbain Chappe presented their invention to the Convention of the French Republic. Due to the success of the experiment, the first public optical telegraph line between Paris and Lille was established in 1793 (Darmstädter, Handbook, pp. 258 and 261). - The frontispiece shows the transmitting station on the Louvre in Paris; the colored copperplate depicts technical details, while the other copperplates show the positions of the wings, their “translation” into the alphabet, and the text of the Convention’s first telegraphic message to Lille. Untrimmed, with occasional foxing and natural paper-related browning. *
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