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It is usually a planetary gear mechanism (epicyclic gearing) in the base of the fusee "cone" which then provides turning power in the opposite direction to the 'winding up' direction therefore keeping the watch or clock running during winding. Most fusee clocks and watches include a 'winding stop' mechanism to prevent the mainspring and fusee ...
After winding, the arbor is stationary and the pull of the mainspring turns the barrel, which has a ring of gear teeth around it. This meshes with one of the clock's gears, usually the center wheel pinion and drives the wheel train. The barrel usually rotates once every 8 hours, so the common 40-hour spring requires 5 turns to unwind completely.
In striking clocks, the striking train is a gear train that moves a hammer to strike the hours on a gong. It is usually driven by a separate but identical power source to the going train. In antique clocks, to save costs, it was often identical to the going train, and mounted parallel to it on the left side when facing the front of the clock. [11]
Keys of various sizes for winding up mainsprings on clocks Mechanism of a Wall Clock, Ansonia Co. 1904. Often power for the device is stored within it, via a winding device that applies mechanical stress to an energy-storage mechanism such as a mainspring, thus involving some form of escapement; in other cases, hand power may be utilized.
A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum. This is a weighted disk or wheel, often a decorative wheel with three or four chrome balls on ornate spokes, suspended by a thin wire or ribbon called a torsion spring (also ...
Ruhla alarm clock b. Winding and setting In order to function as time keepers, and to prevent damage to clockwork, clocks must be regularly wound. An established winding schedule eliminates the threat of over-winding."Traditionally, the job of winding the clocks was given to an horologist or a trained individual.
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The number of strikes that a sonnerie can produce on a full wind depends on the striking mechanism and spring. The sonnerie is implemented differently in clocks. On every quarter-hour it strikes the number of quarter hours audibly on a gong, and then the number of hours since the last hour on a second gong. For instance, in a 3 weight Vienna ...