Louis XV Style Ormolu Mantel Clock, Circa 1830

• Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
• 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.
• Cupid Motif - The Cupid motif, which features the Roman god of love and desire, Cupid, was a popular decorative element in classical ornamentation. Cupid was often depicted as a winged, naked baby with a bow and arrow, and was often used to symbolize love and desire.
  
  In classical art and architecture, Cupid motifs were often used as decorative elements on furniture, such as on the legs of chairs and tables, as well as on architectural elements such as friezes and pediments. They were also used as decorative elements in frescoes, mosaics, and other forms of art.
  
  During the Renaissance, Cupid motifs were often incorporated into the decoration of palaces, churches and other grand buildings, as they were seen as symbols of love and fertility. Cupid motifs were also commonly used in the decorative arts of the Baroque period, often appearing in the form of putti, which are small winged cherub figures.
  
  In addition to their decorative use, Cupid motifs were also believed to hold symbolic meaning, as they were thought to evoke feelings of love, desire, and fertility.
• Putto / Putti / Amorino / Amorini - A putto (plural: putti) or amerino (plural: amerini) is a cherub or cupid frequently appearing in both mythological and religious paintings and sculpture, especially of the Renaissance and Baroque periods and later used as a decorative element in the design of furniture, ceramics, statuary etc. They are usually depicted as chubby males, or of indeterminate gender, often with wings. Their depiction may represent an association with love, heaven, peace or prosperity.
• Satyr - A creature from Greek mythology with goat-like features, including a bearded face and horns, a man's torso, hairy legs and cloven hooves and a tail. As attendants of Bacchus, satyrs sometimes carry grapes or pitchers of wine. As spitis of fertility they may carry a cornucopia or basket of fruit.
  
  They are also used to portray lust, and are often depicted with a leering expression. As well as being depicted singly or in a group in sculpture and candelabra, they also appear as motifs on ceramics, glass, silver and gold objects.
• Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.
• 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:

• clocks, mantle & shelf, material or style - gilt metal / ormolu 548
• clocks, mantle & shelf, period or origin - French 762