French Ormolu Mantel Clock, c.1850

• 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.
• Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
• 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.
• Laurel Leaf - The use of the laurel leaf as a decorative element can be traced back to ancient Greece and Rome, where it was closely associated with victory and honour. In these cultures, the laurel was a sacred tree that was dedicated to the god Apollo and was believed to have protective and healing properties.
  
  In ancient Greece, the laurel wreath was awarded to victors in athletic competitions, such as the Olympic Games, as a symbol of their achievement. The wreath was also associated with academic achievement, and was often worn by scholars and poets. The Greeks also used the laurel leaf as a symbol of victory in war, and it was often depicted in artwork alongside images of triumphant warriors and heroes.
  
  The Romans continued this tradition, and the laurel wreath became a symbol of the highest military honor, the triumph, awarded to victorious generals. The wreath was also used to crown emperors and other important officials, and was often depicted in Roman art and architecture as a symbol of power and authority.
  
  The laurel leaf is still used as a symbol of achievement, success, and excellence, and is frequently used in logos, emblems, and other branding materials. Its association with victory and honour has made it a popular choice for awards, medals, and other forms of recognition.
• Finial - An architectural decoration, found on the upper parts of of an object. On furniture they are usually found on pediments, canopies and shelf supports. On smaller ceramic or silver items, such as spoons, they may decorate the top of the item itself, or the lid or cover where they provide a useful handle for removal.
  
  Finials have a variety of shapes and forms. They may be urn-shaped, baluster shaped round or spiral, but usually taper into an upper point. Many real life shapes may also be used as finials, such as pineapples, berries, pinecones, buds, lotus and acorns. Sometimes animals such as a lion are depicted, or fish and dolphins.

This item has been included into following indexes:

• clocks, mantle & shelf, material or style - gilt metal / ormolu 547
• clocks, mantle & shelf, period or origin
  • French 761
  • Victorian 493