French Comptoise Wall Clock, 19th Century

• Cornucopia - The cornucopia, literally the horn of plenty, is a symbol of abundance and wealth. It is traditionally is represented by a curved goat horn overflowing with grain and fruit.
  
  Modern cornucopias are often depicted as horn-shaped baskets filled with food, and this symbol is often associated with the harvest. This decorative device has a long and ancient history, with roots in Greek mythology.
  
  In one version, when Zeus was playing with the goat Amalthea he accidentally broke off one of her horns. To atone for this, Zeus promised Amalthea that the horn would always be full of whatever fruits she desired. This became the cornucopia of the Roman goddess Copia, the personification of plenty. Other goddesses, including Fortuna and Pax, also held the cornucopia.
  
  In furniture and decorative arts, cornucopia as a decorative element have been popular since the 16th century and can be found on items as diverse as light fittings and candelabra to clocks, sculpture and statuary and furniture.
  
  In ceramics, cornucopia shaped vases were popular in the 19th century, in singles and pairs.
• Verge Escapement - A verge escapement is an early mechanical escapement used in clocks and other timekeeping devices. It is an early form of the escapement mechanism, which is used to regulate the movement of the hands of a clock or watch. The verge escapement consists of a vertical shaft called the verge, which is mounted on the clock's main plate. Attached to the verge are two pallets, which engage with the teeth of the escape wheel. As the escape wheel turns, the pallets alternately lock and release it, allowing the movement of the clock to be regulated. The verge escapement was widely used in early mechanical clocks, but it was eventually replaced by the more accurate and reliable anchor escapement.
• 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.

This item has been included into following indexes:

• clocks, type
  • comptoise comtoise 80
  • dial 258
  • wall 799