18ct Gold Consular Cased Cylinder Fusee Pocket Watch, Dutton Junr
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18ct gold consular cased, cylinder fusee pocket watch, the finely engraved fire gilt full plate movement signed Dutton Junr. London, with cannon barrel pillars and pierced and engraved balance cock. White enamel dial with Arabic numerals, winding hole at 3, gold hands. Domed case, some dents, crest to back. Total weight 100gm
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- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
- Barrel (in a Clock) - In a clock or watch, the barrel is a cylindrical component that stores the energy from the mainspring. As the mainspring is wound, it stores energy in the barrel. As the clock or watch runs, the energy is gradually released from the barrel, turning the clock's gears and keeping the time.
The barrel is typically located near the centre of the movement (the mechanism that powers the clock) and is connected to the center wheel, which drives the rest of the gears. The barrel typically has teeth on its outer surface that mesh with the gears in the movement, allowing it to transmit energy to the rest of the clock. Some barrels are designed to be wound by hand, while others are automatically wound by the motion of the wearer's arm. - 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Use of the fusee in clocks was superseded by the "going barrel" in the mid 19th century and for pocket watches at the beginning of the 19th century.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.
This item has been included into following indexes:
- pocket watches, case type