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the construction of the octa calibre was developed on the basis of one of f.p.journe s most sophisticated inventions the automatic winding calibre designed to incorporate a variety of complications without modifying its size a genuine chronometer it achieves an optimal balance between force capacities and efficiency 44

collection octa octa réserve de marche octa chronographe octa calendrier

octa réserve de marche 46

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the construction of the octa calibre has less powerful ties with the history of watchmaking than do the remontoir or the resonance models but it nonetheless symbolises an horological ideal of giving timekeepers the highest possible degree of precision and autonomy within this context one may mention jobst bürgi who used the remontoir to achieve three months of autonomy for his clock one might also note the fact that if church clocks are placed so high in addition to enhancing visibility it is mostly because it often took an entire month for the driving-weights to drop the full length of their ...

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how to integrate the future into today s conception the diversity of complications in the octa collection integrated within the same calibre calls for an extremely supple and adaptable mind-set among the watchmakers in this workshop they must be able to master this new automatic movement blind-fold in order to incorporate the various revolutionary-sized technical variations when françois-paul journe decided to create a range of automatic winding wristwatches he had two main goals to enhance rating performance and to offer a collection in which all models would have the same dimension whatever ...

octa réserve de marche bidirectional oscillating weight in 22-carat gold high-capacity barrel large-size chronometer balance rating inertia-blocks this movement provides steady and significant force thanks to a one-metre long spring supplying 850g of torque to the mechanism with only 25 loss of amplitude when its power-reserve is exhausted the watch will nonetheless continue to run for around thirty hours after the five days but without ensuring the same precision timekeeping moreover its fast winding mechanism designed to ensure high efficiency works in both directions on a classic simulator chappuis ...

octa chronographe 54

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octa chronographe with the octa chronographe françois-paul journe is revolutionising the classical conception of a chronograph integrated within the octa automatic winding calibre measuring 30 mm in diameter and 5,7 mm in thickness the chronograph is housed in a space just 1 mm thick this space is also occupied by the concentric large date display discs to achieve such a performance françoispaul journe imagined flattening the usual column wheel to transform it into a cam wheel this means it is the profiled rim instead of the column which actions the chronograph levers a single sliding lever returns ...

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octa calendrier

octa calendrier the annual calendar is the third complication to be integrated within the octa automatic winding calibre defined as the first automatic winding movement to ensure a minimum power-reserve of 120 hours five days enabling extremely precise time measurement even when not worn the originality of each of the octa complications is imposed by an identical mainplate for all models within the octa collection the mechanism must adapt to the milling and drilling required for other complications and must also be inserted within a thickness of just 1 millimetre once again françois-paul journe ...

the annual calendar is driven by an internally geared large transmission wheel which surrounds the mechanism this activates the main lever every 24 hours the main lever reaches across the movement to advance the date-wheel and its hand day by day the date-wheel in turn drives the month wheel through a rack the days on a regular seven-day cycle are moved forward by the transmission wheel the automatic advance of the date from the end of short months to the beginning of the next month is programmed by a cam mounted on the month-wheel the five recesses around the cam s circumference representing the ...