Some modern balance wheels use a simpler arrangement, where, taking advantage of the low cost of modern synthetic rubies, a large jewel moves as its own mobile bushing.
VINTAGE RADO CHRONOGRAPH 17 JEWEL INCABLOC FREE
The staff itself does not move relative to the jewel bearing, but the whole bearing is carried in a metal bushing that is free to move in the metal endpiece, under the control of the spring.
VINTAGE RADO CHRONOGRAPH 17 JEWEL INCABLOC MANUAL
When the impact is over, the springs guide the parts back to their original positions. Rado Inserat: 453 Rado Chambord Vintage 1970s Manual Wind Mens Swiss Made SS. AU58 Buy Vintage Rado Automatic Mens Swiss Watch 17. The Incabloc system uses a " lyre-shaped" spring to allow the delicate bearings to shift in their settings under impact, until a stronger shoulder of the staff contacts the strong metal endpiece, so that the pivots and bearings don't have to bear the force of the impact. Vintage Waltham Automatic Mens Watch 17 Jewels Incabloc Swiss Made Runs Works. Before the widespread use of shock protection devices like Incabloc, broken balance staffs were a common type of damage requiring watch repair. The pivots and jewel bearings that support a watch balance wheel are fragile in comparison to the mass they must support, and without shock protection are the part of the watch most likely to be damaged under impact.
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Similar systems are ETA's Etachoc, Kif, Seiko's Diashock, and Citizen's Parashock. Beautiful Vintage Nastrix 17 Jewels Mechanical Incabloc Chronograph Wristwatch - 1,975.00 Beautiful Vintage Nastrix 17 Jewels Mechanical Incabloc Chronograph Wristwatch Hamilton 921 Pilot Watch 21 Jewel Non-reflective Saphire Glass Incabloc Setting - 1,950. Vintage elegant art deco style Avia Cadette 17 Jewels Incabloc Swiss made ladies watch working. It was invented in 1934 by Swiss engineers Georges Braunschweig and Fritz Marti, at Universal Escapements, Ltd, of La Chaux-de-Fonds, Switzerland. Venditore: leasocks (3.431) 100, Luogo in cui si trova loggetto: Bury, Spedizione verso: Worldwide, Numero oggetto: 393546908491 Vintage Avia Cadette 17 Jewels Incabloc Swiss made ladies watch working.
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The Incabloc shock protection system is the trade name for a spring-loaded mounting system for the jewel bearings that support the balance wheel in a mechanical watch, to protect the wheel's delicate pivots from damage in the event of physical shock, such as if the watch is dropped. Jewel bearing of a balance wheel, supported by a lyre-shaped spring Browse FREE Vintage Incabloc Watches Price/Value Guide - Appraisals, Valuations & FREE Sale Advice.