Jones Orrery

Description
William Jones was a young instrument maker in London when he designed an orrery “for the better introduction of young Gentlemen and Ladies to the most pleasing, sublime and useful of all sciences, Astronomy.” This instrument was to be simple and inexpensive, and thus widely available. In use, the planets would be pushed by hand around the sun. Jones introduced this instrument in his Description & Use of a New Portable Orrery (London, 1782). In the second edition of this text (1784) he included a lengthy discussion of the Georgium Sidus, the planet now known as Uranus that was discovered by William Herschel in 1781. He also noted that his orreries were now provided with a newly engraved paper plate that showed the Georgium Sidus and a comet.
In the Museum’s example, the engraved paper plate covering the circular wooden base is marked “A NEW PORTABLE ORRERY / Invented and Made by W. JONES / and Sold by him in Holborn, / LONDON.” The plate also shows the proportional diameters of the planets out to and including the Georgium Sidus as well as a figure of a comet. There is no mention of the sixth and seventh moons of Saturn which Herschel found in 1789.
This orrery has two interchangeable mechanisms. One (the Tellurian) represents the Sun (brass), Earth (ivory) and Moon. The other (the Planetarium) represents the Sun (brass) and five planets (ivory): Mercury, Venus Earth & Moon, Mars, Jupiter and 4 moons (one is missing), and Saturn with ring and 4 moons.
Ref: Henry C. King and John R. Millburn, Geared to the Stars. The Evolution of Planetariums, Orreries, and Astronomical Clocks (Toronto, 1978), pp. 207-210.
Location
Currently not on view
Object Name
orrery
date made
1784-1792
maker
Jones, William
Measurements
overall: 11.2 cm x 22.3 cm x 22.3 cm; 4 13/32 in x 8 25/32 in x 8 25/32 in
place made
United Kingdom: England, London
ID Number
PH*319427
catalog number
319427
accession number
237044
subject
Astronomy
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Globes
Data Source
National Museum of American History, Kenneth E. Behring Center

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