![]() ![]() ![]() offered pare-choc on Roskopf movements in 1932. offered mass-produced pare-choc watches by 1930 and Reconvilier Watch Co. Wyler's Incaflex balance, patented in 1927, had flexible arms unlike anything else on offer. Other companies also developed shock protection in the 1930s. The term “incassable” (“unbreakable”) was widely used on these durable watches, so Incabloc and many other technologies included “inca” in their name. After this, Marti and Georges Braunschweig founded “ La Porte-Echappement Universel SA” across the street from the Election factory in La Chaux-de-Fonds and began producing his innovative devices. These were pioneered by Election, Marti's former employer, until its 1931 bankruptcy. Marti's company, Portescap, developed a shock proofing mechanism that could easily be adapted to any existing watch movement. Breguet famously demonstrated this invention by dropping his watch in front of bystanders and picking it up to show that it was still working.Īlthough so-called “pare-choc” anti-shock devices were widely seen in the late 19th and early 20th century, it is the 1933 invention of Incabloc by Frédéric "Fritz" Marti that brought these to the masses. This allowed it to shift in the event of a shock but then to re-center itself after. It used a cone-shaped cup for the pivot which was itself mounted in a bearing on a spring. Abraham-Louis Breguet is known to have created a device called the “pare-chute” which protected the pivots of the balance from shock. The first shock protection devices integrated into a watch movement appeared in the early 19th century. ![]()
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