Boulle and Ormolu Clock with Starburst Pendulum
You must be a subscriber, and be logged in to view price and dealer details.
Subscribe Now to view actual auction price for this item
When you subscribe, you have the option of setting the currency in which to display prices to $Au, $US, $NZ or Stg.
- Boulle - Boulle work is the name given to tortoiseshell and metal inlay using brass and sometimes silver, found on furniture and smaller wooden objects. It originated in Italy but was developed by Frenchman Andre Charles Boulle (1642 - 1732) under Louis XIV.
Boulle was appointed Royal Cainet Maker to Louis XIV and designed furniture and clockcases for the monarch.
In preparation, the tortoiseshell and metal were cut together following a design, using a fine fret saw.
In the application of the Boulle, the carcase of piece of furniture was covered with the tortoiseshell which in turn was inlaid with the matched designs in metal, which in turn was elaborately engraved.
The use of Boulle work furniture continued mainly in France until the 19th century. - Pendulum - The pendulum was discovered around 1602 by Galileo Galilei, and was adopted for time keeping by the Dutch mathematician and natural philosopher, Christiaan Huygens, who excelled in astronomy, physics, and horology.
The pendulum comprises a metal rod usually of brass or steel with a metal disk, known as a bob, at the end. The movement of the pendulum is driven by weights or a spring, and as a pendulum swings in a regular arc, it was found accuracy could be controlled to within a few seconds a week.
Timekeeping can be adjusted by changing the height of the bob on the rod, making the pendulum either swing slower or faster.
The disadvantage of the pendulum was that changes in temperature also changed the length of the pendulum, interfering with the accuracy of the clock, and so in the 18th century two types of mercurial pendulums were invented which countered the movement in the steel rod.
The pendulum was the world's most accurate timekeeping technology until the invention of the quartz clock, regulated by a quartz crystal, in 1927. - Ormolu - Ormolu was popular with French craftsmen in the 18th and 19th century for ornamental fittings for furniture, clocks and other decorative items. True ormolu is gilt bronze, that is bronze that has been coated with gold using a mercury amalgam. Due to the health risks associated with using mercury, this method of creating ormolu was discontinued in France in the 1830s. A substitute was developed consisting of about 75% copper and 25% zinc, however it was inferior to the bronze version. It was often lacquered to prevent it tarnishing.
This item has been included into following indexes:
Visually similar items
French Sevres style mantle clock gilt metal mount, with porcelain panels decorated with coastal scene, flowers and insects. Height 37 cm width 24 cm depth 12 cm
French brass clock, 19th/20th century, case decorated with scrolling foliage, surmounted by urn finial, with key and pendulum. Height 51 cm
An impressive architectural style Victorian bracket clock late 19th century, mahogany, likely Scottish, having a triple fusee musical movement, with bell striker dial with silent and chiming settings and with musical chimes, Whittington and Westminster. Th
A French cast brass mantle clock, 19th century, with maker's trademark for Japy Freres with four stars, the architectural eight day bell strike clock with a stepped pediment and urn embellishment above the plinth enclosed dial with enamel cartouches and Ro