A Century of Automatic Watch Movements: Fortis and John Harwood (2026)

The Evolution of Automatic Watch Movements: A Century of Innovation and Legacy

The automatic watch movement, a marvel of engineering and design, has become an integral part of modern watchmaking. But its origins are often overlooked, buried beneath the glitz and glamour of iconic brands like Rolex. Today, we delve into the story of John Harwood and Fortis, pioneers who revolutionized the industry a century ago. Their invention, the automatic wristwatch, changed the game forever.

The Early Days of Wristwatches

In the early 1920s, the wristwatch was still a relatively new concept. While it had gained popularity during World War I, it was far from reliable. Every watch required daily manual winding, a tedious and inconvenient process. The crown, a vital component, was a liability, exposing the movement to dust and moisture with every winding. This vulnerability undermined the very essence of Fortis' mission: to create robust mechanical watches for everyday use.

A Revolutionary Idea

John Harwood, a British watchmaker, envisioned a solution. He asked a fundamental question: what if the watch didn't need a crown for winding? Harwood's years of experimentation led to a breakthrough. In 1924, he patented a self-winding system using an oscillating weight. This weight, attached to the wearer's wrist movement, transferred energy to the mainspring through a bumper system. While Harwood's design was limited in its range of motion, it was a game-changer.

Turning Patent into Product

Harwood's invention needed a manufacturing partner, and Fortis, founded by Walter Vogt, was the perfect fit. Fortis brought the technical expertise and industrial scale to turn the patent into a reality. The challenge was immense: the oscillating system had to withstand the stresses of daily life, and every component had to be meticulously engineered for reliability. The result was the first Fortis Harwood automatic wristwatch, unveiled in 1926.

A Radical Departure

These early watches were groundbreaking. They lacked a crown, setting them apart from all others. The wearer would set the time using the rotating bezel, while the movement powered itself through the natural motion of the wrist. This radical departure from tradition was a testament to Harwood's ingenuity.

Legacy and Evolution

The automatic winding system rapidly evolved. Full rotors, capable of 360-degree winding, replaced the bumper system, improving efficiency and power reserves. Movements became thinner, more precise, and more reliable. The core principle, however, remained unchanged: mechanical watches could harness the energy of the wearer's motion.

A Blurred Line

The rise of Rolex's Perpetual rotor system in the post-war era almost obscured Harwood's invention. Rolex's marketing, focused on their own achievements, created a misconception. In 1956, Rolex publicly acknowledged Harwood's invention, a rare act of industry recognition.

Fortis Today and Tomorrow

Fortis, a testament to the spirit of innovation, continues to build watches in the same Grenchen factory where it all began. The company's philosophy, rooted in robust mechanical watches for real-world performance, remains unchanged. The centenary of the automatic wristwatch is a reminder of the power of innovation and the enduring legacy of Harwood and Fortis.

Conclusion: The Practicality of Automatic Movements

We, as enthusiasts of mechanical watches, appreciate their vitality and the tactile interaction they offer. The automatic movement transformed the winding ritual from a necessity to a choice. It made mechanical watches more practical and accessible, ensuring their longevity and relevance in the modern era.

This article is a tribute to the pioneers who shaped the industry. It's a reminder that innovation often lies beneath the surface, waiting to be discovered and celebrated.

A Century of Automatic Watch Movements: Fortis and John Harwood (2026)

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