The following section describes the components of a classic mechanical stopwatch clock are described. Elemental watches and electronic stopwatch clocks operate on fundamentally different principles.
A mechanical stopwatch clock consists of four modules energy storage, train wheel, gear knob and display. The supplied from the energy store and the drive gear train transmitted energy is given by the inhibition of the regulator, and holds the vibration upright. The regulator in turn controls the inhibition which divides the expiry of the movement in a steady beat. The display is from the gear train at this stopwatch clock continue to run at her, you can read the time.
Energy storage
To provide the simplest and oldest way a mechanical stopwatch clock driving energy is the use of a slowly falling weight. The weight can be fixed with a rope, a gut string or chain on the drive wheel of the movement. The heavier the weight, and the larger the wheel, the more torque is to drive the going train are available.
A weight drive is simple to construct and provides a constant driving force. If the duration of a weight stopwatch clock is limited by the height of fall of the weight. If the weight is expired, the stopwatch clock is either with a key to the elevator or square, such as cuckoo stopwatch clocks or watches house, tucked just above the chain. Tower stopwatch clocks with heavy weights often have an electric drive, which does the work.
Another possibility to store mechanical energy is the use of a stopwatch clock spring. In general, these are a long, been overcome spiral spring. For very simple movements is exposed the spring, usually it is still protected in a barrel. The advantage of the spring drive is on the one in the possible reduction of the movement, on the other hand in a position independent of the drive. The development of the spring drive was one of the requirements to be able to produce portable stopwatch clocks.
The light emitted by a spiral spring drive torque is not constant. The farther the stopwatch clock runs, the more the torque is reduced. Uniformly good results for transition of the stopwatch clock so design precautions are necessary. Moreover, due to the limited length of the spring can only be a small amount of drive energy can be stored.
Electric stopwatch clocks are either directly from the mains or battery, such as a coin cell powered.
Train (translation)
You mean all the gears and drives a movement commonly known as gearing. Materials earlier than wood, iron, steel or brass were used in modern watches are also plastics or ceramics, for example application.
The going train transfers the energy from the memory provided with the driving force inhibition on the regulator. Through the combination of different pairs of gears a gradation of each revolution times is achieved, so that the energy storage takes place only very slowly, while the escapement wheel rotates relatively fast.
Many mechanical watches also come with a striking mechanism that is triggered by the stopwatch clock movement at certain times and emits an acoustic signal. Online stopwatch clock movement and percussion are usually separated in the stopwatch clock, either side by side or one behind the other, attached. The percussion has no inhibition, but often with a simple aerodynamic brake - the porch - equipped to prevent it too rapidly. It takes the blows and moves a mechanism to manage them (number and sequence of strokes). After it has been triggered by the stopwatch clock movement, runs a percussion from unique. It turns itself off and remains at rest until it is triggered again. As a sound bell or chime rods are usually used.
Furthermore, there is call and Repetitionsschlagwerke which beat on request time to the minute, or repeat the last executed shock, or execute after a few minutes the repeat automatically.
→ Main article: percussion (stopwatch clock)
For complicated watches there are further additional works, such as a calendar or a factory chronograph movement.
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