====== Pocket watch ======
Portable, smaller watch (French //Montre//)

The development of pocket watches became possible only after the early 15th century, when the [[mainspring|spring]] drive was invented. The shape of the pocket watch evolved from the early can watches. The pocket watches at the time of their invention were round, made ​​of iron and about 2 cm high and 6 cm in diameter.

  *[[1550]] emerged the so-called egg watches (oval shape) 
  *[[1575]] saw the first pocket watches with [[alarm]] function

Initially, the pocket watches are often worn concealed (in the pocket).

  *[[1632]] the colored [[enamel]] painting was invented
  *[[1674]] ​​the Frenchman [[http://fr.wikipedia.org/wiki/Isaac_Thuret|Isaac Thuret]] made the first pocket watch with [[balance spring]].
  *[[1676]] the first [[repeater]] was produced.

In the 18th century ​​pocket watches were often trinkets that were representatively worn open at the belt (Châtelaine).

  *About [[1700]] the watches had also minutes hands
  *Since [[1708]] embossed cases were used
  *About [[1720]] the first [[jewels]] were made
  *[[1726]] the cylinder gear was invented
  *[[1740]] emerged 4-colored [[gold]] cases

In the 19th and early 20th century the pocket watches were usually kept in the pocket. They were often equipped with [[alarm function]], [[repetition]]s, [[chronograph]]s, date indications, musical mechanisms and automats.

  *From [[1800]] the cylinder escapement displaced more and more the until then prevalent [[verge escapement]].

  *From [[1842]], with the invention of the keyless winding ([[crown winding]]) the winding of the pocket watch was no longer performed with a loosely attached key, but by means of the [[crown]].

A distinction is made ​​between open ([[Lépine]]) and closed ([[Savonnette]]) pocket watch type.

===== Literature =====
  * Taschenuhren - Geschichte and Technik; Authors Cecil Clutton, George Daniels; ISBN 3406074545
  * Taschenuhren. Von der Halsuhr zum Tourbillon; Author [[Reinhard Meis]]; ISBN 3766704842


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