Convergence on complications. At BaselWorld 2010, Patek Philippe focused on chronograph watches releasing six new models. At BaselWorld 2011, the companies focus is on the grand complication.
One of the new watch released by Patek Philippe at this years show is the Triple Complication Ref. 5208P. The Ref. 5208P features a monopusher chronograph, perpetual calendar and minute repeater. In the current collection of Patek Philippe’s Grand Complication wristwatches, the Ref. 5208P ranks second only to the Sky Moon Tourbillon.
Patek Philippe Triple Complication Ref. 5208P. The new Ref. 5208P is one of the very few existing highly complicated watches with a self-winding movement and the first true Grand Complication that integrates silicon-derived Silinvar® components, the revolutionary Pulsomax® escapement and the Spiromax® balance spring. The Ref. 5208P is an amalgamation of traditional know-how and innovation.
Patek Philippe in its press release describes the complications as follows:
1st complication: the monopusher chronograph
Patek Philippe has always emphasized the aesthetic appeal of a timepiece in the development of new movements, and it is a mandatory criterion of the Patek Philippe Seal. For this reason, the chronograph mechanism with its column wheel and the horizontal clutch had to be made extremely thin to fit the space between the movement and the instantaneous perpetual calendar. In this respect, the Patek Philippe portfolio is a rich source: the caliber CH R 27-525 PS is the world's thinnest splitseconds chronograph movement with column-wheel control. It contributed the friction drives for the minute and hour counters that are not only very thin but also offset the torque differences between the coupled and uncoupled states of the chronograph, assuring that the amplitude of the balance remains consistent in every operating mode. Additionally, the toothing profiles of the chronograph wheels, also derived from this record-breaking movement, reduce wear and increase power transmission efficiency. Conversely, the patented self-setting hammers and brake levers were borrowed from the new CH 29- 535 chronograph movement. They automatically assure the optimum lever position relative to the respective counterpart without requiring that the individual contact surfaces must be ground to a few hundredths of a millimeter in a time-consuming process. Thanks to innovations of this kind and to the classic column-wheel and clutch-wheel control design, the overall height of the chronograph mechanism was reduced to 2.4 mm. The result is a three-phase chronograph with a monopusher at 2 o'clock that executes the start, stop, and reset commands when actuated in succession. The seconds and fractions of a second are measured with the large sweep chronograph hand while the continuously running counters at 3 and 9 o'clock display the elapsed time on a 60-minute and a 12-hour scale.
2nd complication: the instantaneous perpetual calendar with aperture displays
The basics of its construction bears similarities with the Ref. 5207 launched in 2008, but the mechanism had to be extensively redesigned to accommodate the chronograph functions. Because the chronograph mechanism is layered between the calendar and the movement proper, it was not possible to simply route the cannon pinion through the chronograph wheel into the calendar module with the standard time and calendar data displays. For this reason, a detour had to be designed for the cannon pinion. Given the tight space conditions within the chronograph mechanism, it was a delicate task, and a considerable amount of research had to be conducted to develop the best possible solution. The cannon pinion is severed above the basic movement with the minute repeater. Its rotary motion is laterally shifted before it is transmitted through the chronograph mechanism, but then routed back to the center in the calendar mechanism which drives the hour and minute hands, the calendar displays, the day/night indication, and the moon phases. However, the subsidiary seconds hand is powered directly by an arbor that extends straight into the subdial at 6 o'clock.
To distribute the force in the calendar module as economically as possible with the objective of assuring that all calendar displays will advance instantaneously and simultaneously at midnight ±2 minutes, the patented mechanisms of the Ref. 5207 were modified to match the new configuration of the movement. Considering that the disks for the aperture displays have much larger masses than hands, this was anything but a trivial task. A large, 15-part yoke makes sure that all calendar displays are advanced by one day at the very same moment. Additionally, an arrangement with two complementary lever springs that act in different directions assures that the switching force always remains constant despite considerable travel differences from the single-day jump at the end of months with 31 days to the four-day jump at the end of February when a non-leap year begins. This precludes incomplete switching cycles to a force deficit or overrides due to excessive force reserves.
3rd complication: the minute repeater
Given the fact that the Patek Philippe Triple Complication Ref. 5208 was endowed with an elaborate mechanism which instantaneously switches the calendar indications, the time display deserves special attention as well. Thus, the caliber R CH 27 PS QI movement not only has hour, minute, and seconds hands, it also features a minute repeater that indicates the progression of time with gentle yet distinctly audible sonority.
The minute repeater is considered among experts to be the queen of complications. With a mechanism composed of filigreed racks and snails, tiny hammers, and delicate, freely suspended gongs in the confined space of a wristwatch, it demands the utmost of skill from the watchmaker. In over 172 years, Patek Philippe has advanced the art of repeater timepieces to an unmatched degree of perfection. When the owner of a Ref. 5208P actuates the slide, the result is a reverberant experience: first, the watch counts the elapsed hours on a low-pitched gong, then the number of quarter-hours with double strikes on both gongs, and finally the number of minutes that have passed since the last quarter-hour on the high-pitched gong. Many years of research were invested in finding the best possible steel alloy as well as in developing the shape and attachment points for the gongs – insights that are carefully safeguarded like state secrets. Among connoisseurs, the tonality perfected by the manufacture is deemed unsurpassed by any other wristwatch minute repeater. This sound quality – the manufacture's acoustic signature – is individually analyzed for each watch in a soundproof echo chamber and compared with numerous digitized sound parameters. But because the impression of resonance is always very subjective, every Patek Philippe minute repeater is also personally judged by President Thierry Stern or Honorary President Philippe Stern. They listen to the melody several times and then decide whether the exceptional timepiece is ready for delivery or must be returned to the workshops for acoustic optimization.
On the technological front you have the silicon-derived Silinvar® components, the revolutionary Pulsomax® escapement and the Spiromax® balance spring. Developed by the Patek Philippe Advanced Research program. The excellent material properties of Silinvar® are that it is hard, lightweight, nearly friction free, antimagnetic and corrosion-resistant. The Pulsomax® escapement is about 30% more efficient than a conventional assembly made of steel.
The case of the Ref. 5208P is 40mm in diameter. It shows hours, minutes, and seconds of standard time and has a day/night indicator. The chronograph function shows elapsed seconds, minutes, and hours of stopped times. The perpetual calendar displays the day, date, month, and year and the moon phases.
Befitting a watch of this caliber, the case is made of 950 platinum which in itself is unusual. It is not a conventional design with lugs that are integral to the case band. Instead, it consists of three parts (back, middle, and bezel) that are clenched between and screwed to two clamps. Only this unique construction allowed the lugs to be pierced as resolutely and aesthetically as is the case with the Ref. 5208. It is supplied with on a chocolate brown strap secured with a 950 platinum foldover clasp.
About Patek Philippe. Patek Philippe & Co. was founded in Switzerland in 1851. The company's emblem, the Calatrava Cross, was adopted by it at the end of the 19th Century. It is acknowledged as one of the finest, if not the finest, watchmaker in the world.
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