The Revolutionary Birth of Automatic Watches: Fortis, John Harwood, and a Century of Innovation (2026)

The Evolution of Automatic Watch Movements: A Century-Old Innovation

In the world of watchmaking, there's a hidden hero that powers almost every mechanical watch we own. It's an innovation so fundamental that it's become invisible, yet it's a game-changer. This hero is the automatic movement, a mechanism that winds itself, harnessing energy from our daily movements. But a century ago, this wasn't the case. This month, we delve into the story of how a British watchmaker and a Swiss manufacturer revolutionized the industry, creating a legacy that continues to shape watchmaking today.

The Early Days of Wristwatches

Imagine a time when wristwatches were still a novelty, a time when soldiers in the Great War (WWI) embraced them for their practicality. These early watches were fragile and unreliable, requiring daily manual winding to stay alive. The winding process was a nuisance, exposing the watch's movement to dust and moisture with every turn of the crown. It was a problem that needed a solution.

A Revolutionary Idea

Enter John Harwood, a British watchmaker with a brilliant idea. He questioned the industry's acceptance of the crown as a necessary evil and asked, "What if the watch could wind itself?" After years of experimentation, Harwood developed a self-winding system centered around an oscillating weight. This weight moved with the wearer's wrist, transferring energy to the mainspring. It was a revolutionary concept, one that eliminated the need for manual winding and the associated risks.

From Patent to Product

A patent is just the beginning. Turning Harwood's invention into a durable, reliable product required expertise and industrial execution. This is where Fortis, founded by Walter Vogt, stepped in. Fortis had the infrastructure and conviction to bring the automatic wristwatch to life. The challenge was immense, as every component had to be reengineered to withstand constant motion and daily use.

Technical Triumphs

Fortis rose to the challenge, creating a watch that solved all the issues it aimed to address. The automatic wristwatch was born, and on July 13, 1926, the first Fortis Harwood automatic watches left the manufacture in Grenchen, Switzerland. These watches were revolutionary, lacking a crown entirely. The time was set via a rotating bezel, and the movement powered itself through the wearer's motion.

Evolution and Legacy

The automatic winding system evolved rapidly, with full rotors replacing the bumper system, improving efficiency and power reserves. Movements became thinner and more precise, but the core principle remained unchanged. Every automatic watch we own today can trace its lineage back to that Grenchen manufacture.

A Footnote in History

Interestingly, there's a footnote to this story. As Rolex's Perpetual rotor system gained dominance, the origins of the automatic wristwatch became blurred. However, in a remarkable act of acknowledgment, Rolex published a correction in the London Sunday Express, crediting John Harwood as the inventor of the first self-winding wristwatch. Harwood's portrait even appeared in Rolex advertisements, a rare industry tribute.

Fortis Today

One hundred years later, Fortis continues its legacy in the same building in Grenchen. The atelier has evolved, but the philosophy remains the same - creating robust mechanical watches for real-world performance. The centenary is a significant moment, marking the day the automatic wristwatch entered serial production and became the defining mechanical movement of our time.

A Practical Revolution

The automatic movement made our relationship with mechanical watches more practical. It transformed the daily winding ritual into a choice, adding convenience without compromising the watch's soul. We love mechanical watches for their aliveness, their movement, and the tactile interaction they offer. The automatic movement enhanced this experience, making it more accessible and enjoyable.

As we celebrate this century-old innovation, we reflect on how a simple idea revolutionized an industry. It's a reminder that sometimes, the most impactful changes come from questioning the status quo and embracing innovation. So, the next time you glance at your automatic watch, remember the journey it took to get there, and the visionaries who made it possible.

The Revolutionary Birth of Automatic Watches: Fortis, John Harwood, and a Century of Innovation (2026)

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