Chinoiserie Tavern Clock, England, Mid 19th Century

• 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.
• Chinoiserie - Furniture and decorative items decorated in imitation of a Western interpretation of the Chinese style. The Chinoiserie style first became popular in the late 17th century, though there were frequent revivals, notably by Chippendale (hence 'Chinese Chippendale') during the Regency period, and the Anglo-Japanese style in the second half of the 19th century.
  
  The ubiquitous 'willow pattern' is the most common 'Chinese' theme used in porcelain, while on furniture the Chinoiserie style usually has black or red painted and lacquered decoration, though the hallmark of the furniture style is the use of fretwork in geometrical patterns, pagodas and other decorative forms.
  
  Japonaiseries, as the name implies, are motifs in imitation of the Japanese taste.
  
  See also "Chinese Chippendale".
• Oak - Native to Europe and England, oak has been used for joinery, furniture and building since the beginning of the medieval civilisation. It is a pale yellow in colour when freshly cut and darkens with age to a mid brown colour.
  
  Oak as a furniture timber was superceded by walnut in the 17th century, and in the 18th century by mahogany,
  
  Semi-fossilised bog oak is black in colour, and is found in peat bogs where the trees have fallen and been preserved from decay by the bog. It is used for jewellery and small carved trinkets.
  
  Pollard oak is taken from an oak that has been regularly pollarded, that is the upper branches have been removed at the top of the trunk, result that new branches would appear, and over time the top would become ball-like. . When harvested and sawn, the timber displays a continuous surface of knotty circles. The timber was scarce and expensive and was used in more expensive pieces of furniture in the Regency and Victorian periods.

This item has been included into following indexes:

• clocks, type - tavern clock / Act of Parliament clock 2