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an open book with writing on it sitting on top of a tablean old book with writing on it sitting on top of a tablean old book with a drawing of a man holding a hammeran old book with writing on it sitting on top of a tablean old book with a lot of writing on it sitting on a tablean old book with writing on it sitting on top of a tablean open book with writing on it sitting on top of a tablean open book with handwriting on it sitting on top of a tablea close up of a piece of paper with writing on itan old book with writing on it sitting on top of a tablean old book with a list of items on it sitting on a tablean open book with a drawing on it sitting on a tablea green book sitting on top of a white table
Rossini

162 - BREGUET, Antoine (1851–1882), French physicist and inventor,…
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Estimate €2,000 - €3,000
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Description
BREGUET, Antoine (1851–1882), French physicist and inventor, great-grandson of the watchmaker and physicist Abraham Breguet An exceptional collection containing Antoine Breguet’s archives for the years 1874 to 1880. It comprises carbon copies of letters and scientific texts written by Antoine Breguet. Approximately 300 pp. in-4. Numerous signatures, mechanical and scientific diagrams and sketches, and mathematical calculations. A fascinating collection of Breguet’s correspondence relating to his inventions: the telegraph and the telephone. In particular, it includes texts relating to the creation of his mercury telephone (presented to the Academy of Sciences in 1878), his capillary telegraphic apparatus and its application to the telephone and to the devices of Bell and Edison, etc., supported by descriptive texts and drawings. Patent filed with Brandon and Morgan Brown on Rue Lafitte, together with various additions to this patent. ‘New addition. I also claim the idea of maintaining, by means of a metal rod and through capillarity, a small column of liquid raised above the average level of that liquid. When the current flowing through the circuit comprising the rod and the liquid changes in intensity, the height of the raised column of liquid changes, so that if a small spring causes the metal rod to separate from the liquid, the rod will oscillate vertically in accordance with the variations in current intensity. I claim the application of the movements of this rod described above to telephony and telegraphy. I reserve the right to replace the metal rod with a graphite rod […]’ (1878); Cornelius Roosevelt; Gabriel Lippmann, etc. Description of a telegraphic apparatus designed to reproduce handwriting and characters remotely and continuously. Notes on Zénobe Gramme’s machine (direct current electric generator (theory, sketches, and machines of this kind, etc.)); lecture on electrical energy, etc. There are also a great many scientific letters (to Gaston Tissandier, Léon Léonard Lavallée, Edmond Becquerel, etc.) and calculations and equations (gravity, vital forces). Index of names at the end. Valuable scientific sources on Antoine Breguet’s inventions, including numerous documents, some of which had been lost until now.
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About the sale CLASSICAL ART, Asian collection, antique paintings & works of art
Auction location
Auction time 11/04/2026 at 2:00 PM
Pictures credits: Contact the Auction House
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