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  2. Automatic watch - Wikipedia

    en.wikipedia.org/wiki/Automatic_watch

    The earliest reference to self-winding watches is at the end of 1773 when a newspaper reported that Joseph Tlustos had invented a watch that did not need to be wound. [8] But his idea was probably based on the myth of perpetual motion, and it is unlikely that it was a practical solution to the problem of self-winding watches.

  3. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  4. Movement (clockwork) - Wikipedia

    en.wikipedia.org/wiki/Movement_(clockwork)

    Automatic or self-winding In an automatic watch, including in most mechanical watches sold today, the mainspring is automatically wound by the natural motions of the wearer's wrist while it is being worn, eliminating the need for manual winding.

  5. Automatic quartz - Wikipedia

    en.wikipedia.org/wiki/Automatic_quartz

    Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism [1] (as used in automatic mechanical watches) to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the inconvenience and environmental impact of ...

  6. Abraham-Louis Perrelet - Wikipedia

    en.wikipedia.org/wiki/Abraham-Louis_Perrelet

    About the beginning of 1777, Perrelet invented a self-winding mechanism for automatic watches.It worked on the same principle as a modern wristwatch, and was designed to wind as the owner walked, using an oscillating weight inside the large watch that moved up and down.

  7. Elgin National Watch Company - Wikipedia

    en.wikipedia.org/wiki/Elgin_National_Watch_Company

    The company built the Elgin National Watch Company Observatory in 1910 to maintain scientifically precise times in their watches. The company produced many of the self-winding wristwatch movements made in the United States, beginning with the 607 and 618 calibers (which were bumper wind) and the calibers 760 and 761 (30 and 27 jewels respectively).

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