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  2. Thomas Jefferson - Wikipedia

    en.wikipedia.org/wiki/Thomas_Jefferson

    Jefferson often found his mail opened by postmasters, so he invented his own enciphering device, the "Wheel Cipher"; he wrote important communications in code for the rest of his career. [ 117 ] [ j ] Unable to attend the 1787 Constitution Convention, Jefferson supported the Constitution but desired the addition of the promised Bill of Rights ...

  3. Polygraph (duplicating device) - Wikipedia

    en.wikipedia.org/wiki/Polygraph_(duplicating_device)

    Jefferson called the polygraph "the finest invention of the present age". [3] [4] A description of Jefferson's office routine in his own words may be read online. [5] Another American, Benjamin Henry Latrobe was the first customer of Peale's and not only introduced the device to Jefferson but was also instrumental in its improvement. [6]

  4. Swivel chair - Wikipedia

    en.wikipedia.org/wiki/Swivel_chair

    When the Second Continental Congress met in Philadelphia, Jefferson's swivel chair is purported to be the chair he sat upon when he drafted the United States Declaration of Independence in 1776. [9] Jefferson later had the swivel chair sent to his Virginia plantation, Monticello, where he built a "writing paddle" onto its side in August 1791.

  5. Jefferson disk - Wikipedia

    en.wikipedia.org/wiki/Jefferson_disk

    A disk cipher device of the Jefferson type from the 2nd quarter of the 19th century in the National Cryptologic Museum. The Jefferson disk, also called the Bazeries cylinder or wheel cypher, [1] was a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels or disks, each with letters of the alphabet arranged around their edge in an order, which is different for each ...

  6. Democratic-Republican Party - Wikipedia

    en.wikipedia.org/wiki/Democratic-Republican_Party

    Thomas Jefferson defeated John Adams in the 1800 presidential election, thereby becoming the first Democratic-Republican president. Shortly after Adams took office, he dispatched a group of envoys to seek peaceful relations with France, which had begun seizing American merchantmen trading with Britain after the ratification of the Jay Treaty.

  7. M-94 - Wikipedia

    en.wikipedia.org/wiki/M-94

    The device was conceived by Colonel Parker Hitt and then developed by Major Joseph Mauborgne in 1917; based on a system invented by Thomas Jefferson and Etienne Bazeries. Officially adopted in 1922, it remained in use until circa 1942, when it was replaced by more complex and secure electromechanical rotor machines, particularly the M-209. [1]

  8. Timeline of United States inventions (before 1890) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    The Jefferson disk, or wheel cypher, is a cipher system for encrypting messages and used as a deterrent for codebreaking. Using 26 wheels, each with the letters of the alphabet arranged randomly around them, Thomas Jefferson invented the wheel cypher in 1795.

  9. Historical reputation of Thomas Jefferson - Wikipedia

    en.wikipedia.org/wiki/Historical_reputation_of...

    In the 1930s, Jefferson was held in higher esteem; President Franklin D. Roosevelt (1933–1945) and New Deal Democrats celebrated his struggles for "the common man" and reclaimed him as their party's founder. Jefferson became a symbol of American democracy in the incipient Cold War, and the 1940s and 1950s saw the zenith of his popular reputation.

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