Jaquet-Droz automata
Encyclopedia
Automaton
An automaton is a self-operating machine. The word is sometimes used to describe a robot, more specifically an autonomous robot. An alternative spelling, now obsolete, is automation.-Etymology:...
built by the Jaquet-Droz family, refer to three doll automata built between 1768 and 1774 by Pierre Jaquet-Droz
Pierre Jaquet-Droz
Pierre Jaquet-Droz was a Swiss-born watchmaker of the late eighteenth century. He lived in Paris, London, and Geneva, where he designed and built animated dolls, or automata, to help his firm sell watches and mechanical birds....
, his son Henri-Louis and Jean-Frédéric Leschot: the musician, the draughtsman and the writer. The dolls are still functional, and can be seen at the Musée d'Art et d'Histoire of Neuchâtel, in Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....
. They are considered to be among the remote ancestors of modern computers.
The automata were designed and built by Pierre Jaquet-Droz, Henri-Louis Jaquet-Droz and Jean-Frédéric Leschot as advertisement and entertainment toys designed to improve the sales of watches among the nobility of Europe in the 18th century. They were carried around, and lost at several points. The History and Archeology society of Neuchâtel eventually bought them in 1906, for 75'000 francs in gold, and gave them to the museum, where they have been ever since.
The musician
The draughtsman
Louis XV of France
Louis XV was a Bourbon monarch who ruled as King of France and of Navarre from 1 September 1715 until his death. He succeeded his great-grandfather at the age of five, his first cousin Philippe II, Duke of Orléans, served as Regent of the kingdom until Louis's majority in 1723...
, a royal couple (believed to be Marie Antoinette
Marie Antoinette
Marie Antoinette ; 2 November 1755 – 16 October 1793) was an Archduchess of Austria and the Queen of France and of Navarre. She was the fifteenth and penultimate child of Holy Roman Empress Maria Theresa and Holy Roman Emperor Francis I....
and Louis XVI
Louis XVI of France
Louis XVI was a Bourbon monarch who ruled as King of France and Navarre until 1791, and then as King of the French from 1791 to 1792, before being executed in 1793....
), a dog with "Mon toutou" ("my doggy") written beside it, and a scene of Cupid driving a chariot pulled by a butterfly.
The draughtsman works by using a system of cam
Cam
A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion or vice-versa. It is often a part of a rotating wheel or shaft that strikes a lever at one or more points on its circular path...
s which code the movements of the hand in two dimensions, plus one to lift the pencil. The automaton also moves on his chair, and he periodically blows on the pencil to remove dust.
The writer
François Mitterrand
François Maurice Adrien Marie Mitterrand was the 21st President of the French Republic and ex officio Co-Prince of Andorra, serving from 1981 until 1995. He is the longest-serving President of France and, as leader of the Socialist Party, the only figure from the left so far elected President...
when he toured the city). The text is coded on a wheel where characters are selected one by one. He uses a goose feather to write, which he inks from time to time, including a shake of the wrist to prevent ink from spilling. His eyes follow the text being written, and the head moves when he takes some ink.