Automatic watch

automaticself-windingself-winding watchautomatic movementautomatic windingautomatic wristwatchself-winding watchesself-winding wristwatch(mechanical) watchautomatic caliber
An automatic or self-winding watch is a mechanical watch in which the natural motion of the wearer provides energy to run the watch, making manual winding unnecessary.wikipedia
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Mechanical watch

mechanicalmechanical watchesmanual winding
An automatic or self-winding watch is a mechanical watch in which the natural motion of the wearer provides energy to run the watch, making manual winding unnecessary. In a mechanical watch the watch's gears are turned by a spiral spring called a mainspring.
Automatic winding or self-winding—in order to eliminate the need to wind the watch, this device winds the watch's mainspring automatically using the natural motions of the wrist, with a rotating-weight mechanism.

Mainspring

springspring motorspring-wound
In a mechanical watch the watch's gears are turned by a spiral spring called a mainspring.
This is the normal standard for hand-wound as well as self-winding watches.

Patek Philippe SA

Patek PhilippePatek Philippe & CoPatek Philippe with a Sky Moon Tourbillion
The "slipping mainspring" device was patented by Adrien Philippe, one of the founders of Patek Philippe, on 16 June 1863, long before self-winding wristwatches.
Like other Swiss manufacturers, the company produces mostly mechanical movements with automatic or manual winding mechanism, but has also been producing quartz watches.

Abraham-Louis Perrelet

The earliest credible evidence for a successful design is the watch made by the Swiss watchmaker Abraham-Louis Perrelet, who lived in Le Locle.
About the beginning of 1777, Perrelet invented a self-winding mechanism for automatic watches.

Abraham-Louis Breguet

Breguet
In 1777 Abraham-Louis Breguet also became interested in the idea and his first attempts led him to make a self-winding mechanism with a barrel remontoire.
Through his role as tutor to the dukes of Angoulême and de Berri, Abbé Marie was able to arrange for Breguet to be introduced to King Louis XVI of France, and the king's interest in mechanics led to many royal commissions for the rising watchmaker, including a perpetuelle (self-winding watch), with which the king was especially pleased.

John Harwood (watchmaker)

John Harwood
Invented by John Harwood, a watch repairer from Bolton, England, who took out a UK patent with his financial backer, Harry Cutts, on 7 July 1923, and obtained a corresponding Swiss patent on 16 October 1923.
John Harwood (1893–1964) was a British watchmaker who invented the self-winding wristwatch.

Rolex

TudorOyster DateRolex Australia
The Rolex Watch Company improved Harwood's design in 1930 and used it as the basis for the Rolex Oyster Perpetual, in which the centrally mounted semi-circular weight could rotate through a full 360° rather than the about 200° of the 'bumper' winder.
In 1931, produced first self-winding Rolex wristwatch was offered to the public in 1931 (so-called the "bubbleback" due to the large caseback), preceded to the market by Harwood which patented the design in 1923 and produced the first self-winding watch in 1928, powered by an internal mechanism that used the movement of the wearer's arm. This not only made watch-winding unnecessary, but kept the power from the mainspring more consistent resulting in more reliable timekeeping.

Miyota 8215

Japanese Miyota movement
Miyota 8215
The Miyota 8215 is a Japanese automatic wristwatch movement that is used by many watch makers.

ETA SA

ETAETA movementsETA S.A.
ETA Movements
ETA SA Manufacture Horlogère Suisse (ETA SA Swiss Watch Manufacturer) designs and manufactures quartz watches and both hand-wound and automatic-winding mechanical ébauches and movements.

Ratchet (device)

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The normal movements of the watch in the user's pocket or on the user's arm cause the rotor to pivot on its staff, which is attached to a ratcheted winding mechanism.

Balance wheel

foliotcompensation balanceauxiliary temperature compensation
The excessive drive force applied to the watch movement gear train can make the balance wheel rotate with excessive amplitude, causing the impulse pin to hit the back of the pallet fork horns.

Amplitude

peak-to-peakintensityvolume
The excessive drive force applied to the watch movement gear train can make the balance wheel rotate with excessive amplitude, causing the impulse pin to hit the back of the pallet fork horns.

Pallet fork

palletleverpallets
The excessive drive force applied to the watch movement gear train can make the balance wheel rotate with excessive amplitude, causing the impulse pin to hit the back of the pallet fork horns.

Adrien Philippe

The "slipping mainspring" device was patented by Adrien Philippe, one of the founders of Patek Philippe, on 16 June 1863, long before self-winding wristwatches.

Barrel (horology)

barrelgoing barrelbarrels
In an ordinary watch mainspring barrel, the outer end of the spiral mainspring is attached to the inside of the barrel.

Pocket watch

pocketwatchfob watchwatch fob
In late 1776 or early 1777, he invented a self-winding mechanism for pocket watches using an oscillating weight inside the watch that moved up and down.

Remontoire

In 1777 Abraham-Louis Breguet also became interested in the idea and his first attempts led him to make a self-winding mechanism with a barrel remontoire.

French Academy of Sciences

Académie des sciencesAcademy of SciencesRoyal Academy of Sciences
Towards the end of 1778 he sent a watch to the French Academy of Sciences and a report was written which, together with a drawing, gave a detailed description of the mechanism.

Great Depression

Depressionthe Great DepressionDepression-era
30,000 were made before the Harwood Self-Winding Watch Company collapsed in 1931 in the Great Depression.

Jewel bearing

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Until this point, the best bearing used in any watch was a jewel bearing, which perfectly suits the small gears of a watch.

Ball bearing

ball bearingsball-bearingball
In 1948, Eterna introduced the solution that is still in use today: ball bearings.

Carl F. Bucherer

Bucherer
However, in 2007 Carl F. Bucherer implemented a new approach without a rotor, a peripherally mounted power source, where a geared ring made of tungsten encircles the entire mechanism, rotating on carbon rollers whenever the watch moves.

Tungsten

WwolframTungsten (W)
However, in 2007 Carl F. Bucherer implemented a new approach without a rotor, a peripherally mounted power source, where a geared ring made of tungsten encircles the entire mechanism, rotating on carbon rollers whenever the watch moves.

TAG Heuer Monaco

Heuer MonacoMonacoMonaco 1133B Caliber 11 Automatic
The TAG Heuer Monaco (originally Heuer Monaco) is a series of automatic chronograph wristwatch originally introduced by Heuer in 1969 in honour of the Monaco Grand Prix.

Omega Seamaster Planet Ocean

Seamaster Planet Ocean
The Omega Seamaster Planet Ocean is an automatic professional Swiss made luxury diving watch designed and manufactured by Omega SA since 2005.