Achille Brocot and Delettrez Neoclassical Perpetual Calendar Clock Garniture Set

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Seller: maryrose7915 (376) 100%, Location: northants, Ships to: Free Local Pickup, Item: 253659673269 A fine and rare Neoclassical perpetual calendar clock garniture by the renowned Clock-Makers, Achilles Brocot and Jean Baptist Delettrez. Inset with embossed metal friezes, warrior figures with lion mask capitals with a white enamel dial and moon phase together with subsidiary dials for Day and Date, striking the hours and half's upon a bell. The Fine movement is stamped ABD within a cartouche to the inner bezel (Achille Brocot & Delettrez) and the Pendulum is stamped JBD within a cartouche (Jean Baptist Delettrez) and all plates are matching with the stamp ‘10312’ Achille Brocot (pronounced "broco") (11 July 1817 – 19 January 1878) Achille Brocot was known for his discovery (contemporaneously with, but independently of, German number theorist Moritz Stern) of the Stern–Brocot tree, a mathematical structure useful in approximating real numbers by rational numbers; this sort of approximation was an important part of the design of gear ratios for clocks. He also made many practical horological innovations including refinement of his father Louis-Gabriel's Brocot escapement and the development of clocks with perpetual calendar mechanisms. In order to commercially exploit his original designs, together with Jean-Baptiste Delettrez he established the clock-making company "Brocot & Delettrez" in Paris on 20 October 1851, a partnership that would continue until his death. Achille was the most inventive of the Brocots, He devised thermal compensated pendulums, variant escapements, perpetual calendars, equation of time displays and long running clocks (up to 4 years). (Antoine) Jean-Baptiste Delettrez (1 May 1816 – 25 May 1887) Jean-Baptiste Delettrez and Achille Brocot, established the clock-making company "Brocot et Delettrez" in Paris on 20 October 1851, with premises at 62 Rue Charlot. Their speciality was a range of clocks based on the innovations of Brocot père and his other son Antoine, but generally of Achille's greatly advanced original designs, some having a unique single-arm double-wheel escapement, some having a temperature-compensated pendulum, some having two dials, one of which showed the time and the other which showed a calendar and often other information such as phases of the moon, times of sunrise & sunset in Paris, etc. The firm was awarded a 1st class prize at the Paris World Exposition of 1857 for a commercial clock of this type. This innovative and fruitful partnership continued until the death of Brocot, after which event Delettrez continued on his own. His typical later product was a conventional 8-day mantel clock that struck the hours and half-hours, still based on the standard Brocot escapement and suspension that he had helped to refine. These elegant and much-admired timepieces were typically made to order for retailers, including several in Britain, with dials carrying the name of the retailer rather than that of their maker, but whose mechanism was stamped with the cartouche (JBD). He married his cousin Caroline Delettrez in Paris on 2 April 1845. They had two sons, Louis and Jules, both of whom later carried on the family tradition of metalworking, the former as a manufacturer of bronze objets d'art and the latter as a goldsmith (would benefit from re gilding). Sub-Type: Mantel Clock, Age: Antique, Pre-1900, Material: Brass, Clock Type: Mantel/ Carriage Clock, Style/ Origin/ Theme: French, Type: Mantel/ Carriage Clock, Features: Month Going

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