12/04/2021
Located in the North Wing exhibition of Monticello (Thomas Jefferson’s home from 1770 until his death in 1826) is an exquisite reproduction of Jefferson’s 1802 horse-drawn Phaeton carriage. Thomas Jefferson, being the consummate Renaissance man of his day, dabbled in many inventive, cultural, and scientific passions. These passions included architecture, politics, naturalism, art, fine food, and most relevant to this post, inventing. Jefferson’s carriage pictured above is significant because attached to one of the wheels, Jefferson had affixed an odometer built by Virginia inventor James Clarke. Jefferson first became interested in odometers while in France (1784-1789) serving as a foreign minister for the newly created United States. After several ultimately unfruitful inquiries into odometers in 1788, Jefferson seemed to have tabled the passion for a later time. That time seemed to have arrived in September of 1791, when Jefferson, serving as Secretary of State in Philadelphia, finally purchased an odometer from a local clockmaker named Robert Leslie. By this time, Jefferson had decided that the “Pendulum Odometer” would have made a dependable instrument to establish a standard unit of measure for distance. In Jefferson’s time, pendulum odometers were used on carriages by attaching them between the spokes of one of the carriage’s wheels. On September 2, 1791, Jefferson and James Madison set off from Philadelphia for Montpelier and Monticello, respectively. While it turns out that Jefferson’s measurements of his carriage wheel were off, therefore, throwing off the odometer, Jefferson was nonetheless impressed. In 1807, while Jefferson was president, he wrote the inventor James Clarke about copying a version of his odometer. Clarke was exceedingly pleased with Jefferson’s request and decided to furnish the President with his very own Odometer. An interactive replica of Clark's odometer can be seen in the North Wing exhibition at Monticello today. Jefferson had the odometer augmented with a bell that would chime at each mile much to the ingenious statesman’s delight.
https://www.monticello.org/
Sources:
Harbster, Jennifer, and Julie Miller. “Counting the Miles: Thomas Jefferson's Quest for an Odometer.” The Library of Congress, August 27, 2015. https://blogs.loc.gov/inside_adams/2015/08/counting-the-miles-thomas-jeffersons-quest-for-an-odometer/ #:~:text=To%20calculate%20the%20distance%20a,the%20number%20of%20its%20revolutions.&text=As%20he%20often%20did%2C%20Jefferson,using%20his%20new%20odometer%2C%20distances.
Boonshoft, Mark. “Traveling the Roads of Early America with Jefferson.” The New York Public Library, August 13, 2015. https://www.nypl.org/blog/2015/08/12/traveling-with-jefferson.