« Pioneer of the Modern Automatic Watch »
Progressive, reliable and ingenious – the automatic movement is without doubt the single most important foundation of modern horology. Only with its invention in the early 1920s could the growth begin that brought the watch industry to the size it is today. Louis Leroy, a French watchmaker, was among the key trailblazers of this innovation. Let's take a journey back in time to explore the beginnings of the automatic watch and the life stories of two fascinating pioneers.
Leroy: A Prominent Name in Watchmaking History
The dynasty's origins date back to 1785, when chronometer maker Bazile-Charles Leroy, born in 1765, opened his watch manufacture near the Palais Royal in Paris. Known as the "watchmaker to kings," he brought his son Louis-Charles into the business in 1828, which from then on operated under the name "Leroy et Fils." After Bazile-Charles's death in 1839, his son sold the company to the manufacturer and inventor Georges Casimir Halley des Fontaines, who in turn handed it over to his son Jules in 1879. Louis Leroy, who despite the shared name was not related to the original founder Bazile-Charles, served as Jules Halley des Fontaines's business partner and carried on the company's tradition of high-quality pocket watches and marine chronometers.
Incidentally, neither family – that of founder Bazile-Charles nor that of Louis Leroy – is related to the famous watchmaker Julien Le Roy and his son Pierre Le Roy. While Julien went down in history as court watchmaker to Louis XV, Pierre developed the first chronometer escapements together with Ferdinand Berthoud.
Perfection and Passion: The Road to Success
When Leroy joined the Paris manufacture, its already high quality standards rose yet again. What impressed people was not only the reliability and precision of the timepieces, unusually high for their era, but also their complexity. To demonstrate the limits of what was technically possible, Leroy designed the "01" pocket watch in 1901, which, with 975 individual parts, was the most complicated masterpiece of its time. Beyond the usual hour, minute and seconds hands, it also featured day-of-the-week, month, year and moon phase displays, along with further indications for the seasons, the solstice, and sunrise and sunset. This world time watch also incorporated a hygrometer, thermometer, barometer, altimeter and compass, making it one of the most fascinating watches of all time to this day. It is on display at the Musée du Temps in Besançon, France.

Given these achievements, it's hardly surprising that Leroy was named a Knight of the Legion of Honor in 1906 – still France's highest distinction today. As "Horloger de la Marine," he supplied his timepieces not only to wealthy clients but also to the French military. And when, around 1922, his watches first bore the modest inscription "Systeme de remontage'automatique," the pioneer achieved what was arguably his greatest feat: the automatic movement was born.
Designed in France, Improved in England
It took only four years until, in 1926, the world's first series production of automatic wristwatches got underway. How did that come about? Alongside Leroy, English chronometer maker John Harwood was also working on improving the watches of the day. He realized that dust and moisture were the main reasons most timepieces were inaccurate, and he set himself the goal of developing a model with an integrated winding mechanism. This would make opening the case unnecessary and ensure optimal protection for the delicate mechanics.
To register his invention, he traveled to Bern in 1923 in order to be as close as possible to the "world center of watchmaking," as Switzerland was already called back then.
Just one year later, he was granted the patent for his groundbreaking innovation, and at the 1926 Basel trade fair, the forerunner of today's Baselworld, he presented the world's first series-produced automatic wristwatch. His "Harwood Watch Company" gained worldwide fame in the years that followed, but ceased production as early as 1931, when Harwood's patents expired and his company lacked the financial means to survive the global financial crisis. Because of their historical significance, original examples are now among the most coveted collector's pieces in horology.
The Decades That Followed: Rise and Fall of a Global Industry
In recognition of his significant contributions to watchmaking, as well as to the French military, Leroy himself was named an Officer in 1930; he died five years later. John Harwood lived on after the failure of his company until 1964 and, just a few years before his death, was awarded the Gold Medal of the British Horological Institute.
The great achievements of both inventors endured, however, and laid the foundation for everything we know about today's watch industry. Not only Rolex, Breitling and Omega, but countless other brands experienced their greatest rise from the 1930s onward, when, alongside a wealth of innovations, demand for precise timepieces grew as well – in both civilian and military use. Yet the flourishing boom of the Swiss watch industry was to come to an abrupt end when the quartz crisis struck with full force in the early 1970s and threatened to wipe out traditional watchmaking.
While the Swiss continued to bet on mechanical watches, Japanese and American manufacturers in particular flooded the market with inexpensive quartz watches.
As we know today, Swiss watchmaking fortunately was not destroyed. Quite the opposite: when Swatch presented the wristwatch as a modern accessory from 1983 onward – essentially reinventing it – the rest of the industry in the "Watch Valley" of the Jura Arc began to flourish again as well. Today, nearly 100 years after the invention of the automatic movement, the watch world is more diverse and innovative than ever. Would that have been possible if Leroy had never lived? We will probably never know.



