. Bulletin. Science. Figure 30.—Morse's canvas-stretcher receiver {top) and port- rule transmitter of 1837. It is diificult to fix the date of actual construction of this apparatus. Morse gave it to Western Union at some time prior to his death in 1872, and Western Union gave it to the Smithsonian Institution in 1896. {USNM 1812^0, Smithsonian photos 13366 and i^jg3-A.) After returning to the United States, Morse asked that his patent be issued, which it finally was on June 20, 1840, as patent 1647 (reissued in 1846 and 1848). However, in spite of the earlier favorable report by a committ
. Bulletin. Science. Figure 30.—Morse's canvas-stretcher receiver {top) and port- rule transmitter of 1837. It is diificult to fix the date of actual construction of this apparatus. Morse gave it to Western Union at some time prior to his death in 1872, and Western Union gave it to the Smithsonian Institution in 1896. {USNM 1812^0, Smithsonian photos 13366 and i^jg3-A.) After returning to the United States, Morse asked that his patent be issued, which it finally was on June 20, 1840, as patent 1647 (reissued in 1846 and 1848). However, in spite of the earlier favorable report by a committee of Congress, Morse was unable to obtain funds from the Government until March 3, 1843. The partners decided to use the $30,000 appropriated by Congress to set up a line along the 40 miles of the Baltimore and Ohio Railroad running between Baltimore and Washington. After an un- successful attempt to lay a subterranean line, they had the line placed on glass insulators on poles. The first message was sent on May 24, 1844, at a speed of about 30 letters per minute. (For the instrument used in these trials and for later devices of Morse and Vail, see figures 32-35.) While Morse obtained a certain amount of public- ity in Congress when he sent reports to Washington on the Whig and Democratic presidential nominat- ing conventions in Baltimore, the lines in general PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 299. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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