Watch Basics
Watch development as it currently stands

  which watches pocket watch and wristwatch
which watches pocket watch and wristwatch
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Watch Basics

There is more than one way to categorize watches, but the easiest way is to either classify them as a mechanical watch or as a quartz watch. (There is also a grey area of the electro mechanical watches)

The Mechanicals
Strictly speaking a mechanical watch is a watch made up of more than 120 parts. To most people, a mechanical watch is a watch without a battery, one that needs winding up in order to keep going, or one that self winds while being worn. The first watches were mechanical watches, pocket and wrist, and thus mechanical watches have a long history of development and stylish design. The mechanical watch works something like this :-

The mainspring, contained within a barrel, attached to a rotar, is wound by hand and this powers the mechanical watch. The main spring transfers power to a complicated set of wheels called the gear train. The gear train in turn is connected to an escarpment mechanism, which consists of a wheel and pallet fork, which in turn transmits power to the balance wheel, making the balance wheel oscillate. This oscillation provides the tick of a mechnical watch. The balance wheel is connected to a further set of interconnected wheels that carry the watch hands and display the time.

For a self winding watch, it has a weight attached to the rotar, which swings back and forth when the watch moves, and this provides the winding of the watch.



The Quartz Watches
A quartz watch consists of battery, step motor, a quartz resonator and an integrated circuit. The battery powers the quartz to vibrate rapidly, at 32,768 times per second, which is used to divide up time by the integrated circuit, which then in turn displays the time. A quartz watch can be either analog, consisting of moving hands, or digital, displayed through a liquid crystal display. The very rapid oscillation of the quartz resonator, is the reason that a quartz watch is much more accurate, approximately 12 times, than a mechanical watch. In addition, the quartz crystal barely wears, as it is treated at manufacture time. The quartz crystal is also not affected by changes in atmospheric pressure and is resilient to extreme shocks.


Electro Mechanicals
This type of watch was a stepping stone in watch development. They consisted of a battery used as a power source, with a mechanical gear train used to convert the power into time segments, and then into the current time. Unfortunately this style of watch was quickly overtaken by the quartz movement.




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