ID: 700009219 Page link: http://vocab.getty.edu/page/cona/700009219	Record Type: Movable Work
Images: 1

Longcase Equation Regulator (longcase clock; clockmaker: Ferdinand Berthoud (French, 1727-1807); case mak...; ca. 1752; Metropolitan Museum of Art (New York City, New York state, U...; 2016.28a–e; )

Note: This clock, presented in April 1752 to the Royal Academy of Sciences in Paris, appears to be the first equation clock by Berthoud, who came to specialize in timekeepers showing both solar time, which varies slightly according to the season, and mean solar time, which is stable throughout the year. The trunk of Lieutaud’s case swells just above the base, enclosing a shaped opening to show the pendulum. The curved outline of the case is not only in keeping with the rococo style popular in the mid-eighteenth century but also highlights Berthoud’s cutting-edge technology of the time.

Titles:

Longcase Equation Regulator (preferred,C,U,RP,English-P,U,U)

Catalog Level: item

Work Types:

longcase clock [300041586] (preferred)

..... (Objects Facet, Furnishings and Equipment (hierarchy name), Measuring Devices (hierarchy name), measuring devices (instruments), <measuring devices for extent>, timepieces, <timepieces by form>, clocks, <clocks by form>, floor clocks)

regulator (clock) [300197662]

..... (Objects Facet, Furnishings and Equipment (hierarchy name), Measuring Devices (hierarchy name), measuring devices (instruments), <measuring devices for extent>, timepieces, <timepieces by form>, clocks, <clocks by function>)

Classifications:

timepieces / measuring devices (preferred)

Creation Date: ca. 1752

Creator Display:

clockmaker: Ferdinand Berthoud (French, 1727-1807); case maker: Balthazar Lieutaud (French, ca. 1720-1780) [preferred]

clockmaker Berthoud, Ferdinand (French clockmaker, 1727-1807) [500337204]

cabinetmaker Lieutaud, Balthazar (French ébéniste, died 1780) [500054678]

Locations:

Current: Metropolitan Museum of Art (New York City, New York state, United States) [500125157] Corporate Bodies (Corp. Body)

Repository Numbers: 2016.28a–e

Credit Line: Purchase, Acquisitions Fund, and Annette de la Renta, Mercedes T. Bass, Beatrice Stern, Susan Weber, William Lie Zeckendorf, Alexis Gregory, and John and Susan Gutfreund Gifts, in honor of Mrs. Charles Wrightsman, 2015

Display Materials: oak veneered with satinwood and kingwood; gilt-bronze mounts, glass, enamel, steel, and brass

	oak (wood) [300012264]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by origin>, biological material, plant material, <wood and wood by product>, wood (plant material), <wood by composition or origin>, hardwood)

	veneering (process) [300053878]
	.......(Activities Facet, Processes and Techniques (hierarchy name), <processes and techniques by specific type>, <additive and joining processes and techniques>, <surface covering processes and techniques>)

	satinwood (wood) [300012451]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by origin>, biological material, plant material, <wood and wood by product>, wood (plant material), <wood by composition or origin>, hardwood)

	kingwood (wood) [300136737]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by origin>, biological material, plant material, <wood and wood by product>, wood (plant material), <wood by composition or origin>, hardwood)

	ormolu [300011048]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by composition>, inorganic material, metal, <metal by form>, plate (material), <plate by technique>)

	glass (material) [300010797]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by composition>, inorganic material)

	enamel (fused coating) [300014910]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by function>, coating (material), <coating by composition or origin>)

	steel (alloy) [300133751]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by composition>, inorganic material, metal, <metal by composition or origin>, <iron and iron alloy>, iron alloy)

	brass (alloy) [300010946]
	.......(Materials Facet, Materials (hierarchy name), materials (substances), <materials by composition>, inorganic material, metal, <metal by composition or origin>, nonferrous metal, <copper and copper alloy>, copper alloy)

Dimensions: Overall: 86 1/4 × 24 13/16 × 11 13/16 inches (219 × 63 × 30 cm)

Cultures:

French (preferred)

Style/Period/Group/Movement:

	Rococo [300021155] (preferred,N/A)
	.....(Styles and Periods Facet, Styles and Periods (hierarchy name), <styles| periods| and cultures by region>, European, <Renaissance-Baroque styles and periods>)

General Subject:

machines and equipment (preferred,isness)

Provenance: Sir Charles Mills, Baronet ; Charles Henry Mills, 1st Lord Hillingdon ; by descent, The Lords Hillingdon , London (until 2001; sale, Christie's, London, July 5, 2001, lot 200; sold for £322,750 to Galerie Aveline); [ Galerie Aveline, Paris , 2001–15; sold to MMA ]

Inscriptions: Signature: Signed on backplate: Fnd Berthoud Inv Et Fecit A Paris Signed on dial: Fnd Berthoud A Paris Stamped on case: B. LIEUTAUD Signed and dated on the strike train signed and dated: Richard fevrier 1787 Inscription: Engraved inscription on steel plaque in the interior: Cette Pendule à Equation et à Verge composée, a été faite par FERDINAND BERTHOUD, Horloger à Paris qui en a inventé l’Equation, et qu’il présenté en 1752 a l’Académie Royale des Sciences de Paris./Voyez l’Année 1752 des Mémoires de l’Académie des Sciences de Paris, Page 147 de l’Histoire, le Tome VII du Recueil des Machines, Page 425. et l’Essay sur l’Horlogerie par le dit Berthoud, Tome 1er. Chapitre XVe. Page 79eme. Et suivantes On movement, the equation of time aperture engraved: LE SOLEIL AVANCE OU RETARD; the smaller window at chapter III engraved: A Pres la Bissextile

Marks: Marking: Stamped, on the body: MB and FL (in a frame)

List/Hierarchical Position:

..... Movable Works

.......... Movable Works by class: decorative and utilitarian works

Sources and Contributors:
Longcase Equation Regulator	........ [VP]
	........ Metropolitan Museum of Art [online] (2001-) accessed 17 January 2017

Subject: ....... [VP]

....................... Metropolitan Museum of Art [online] (2001-) accessed 17 January 2017

Note:
English	..... [VP]
	..... Metropolitan Museum of Art [online] (2001-)