William Bent 18ct Gold Pocket Watch, London, 1876
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William Bent 18ct gold open face pocket watch, the dial with maker's name and 'London E.C. 15493'. fusee drive. The bezel slightly out of shape. 141gm. Diameter 53 mm. Case date 1876.
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- Date Aperture - A date aperture is a cut out section in the face of a watch or clock, displaying the day of the month.
- Fusee - The fusee movement was used in clocks and pocket watches from the mid 17th century. The fusee is a cone shaped drum within the works that is linked to the barrel of the spring, usually by a length of chain.
As the mainspring loses its tension over time, the cone shaped barrel compensates for this by increasing the tension, by pulling the mainspring tighter, thus ensuring the time remains constant.
Use of the fusee in clocks was superseded by the "going barrel" in the mid 19th century and for pocket watches at the beginning of the 19th century.
The fusee continued to be used in marine chronometers until the 1970s. - Bezel - On a clock or watch, the bezel is the metal frame into which the watch or clock glass is fitted. In clocks, the bezel may include a hinge and a flange, in effect a door to the face of the clock. In jewellery the bezel is a band of metal with a projecting lip that holds the gemstone in its setting.
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