- Dimensions: 135 x 29 x 16 cm ( H x B x T )
- Duration: 11 weeks
- Price Range (inkl. VAT): 35 – 45.000,00 €
- Shipping included. (Details)
In times past, the hands of precision pendulum clocks, also known as “regulators”, were arranged in a typical manner, i.e. a central minute hand and small inset circles for the hour hand (above) and second hand (below). Without this arrangement, the broader hour hand would have covered the second hand at midnight, exactly the time of day when observatory telescopes were used to trace the path of a star to check the clock’s timekeeping.
With his typical respect for tradition coupled with a passion for unique, simple and elegant design, Philippe Wurtz has added his own special touch to this arrangement of the hands. The SARLAT has the traditional central minute hand and separate second hand, but it has no hour hand: instead, the hours are integrated into the hour wheel. But rather than chiseling the numbers into the material of the wheel, Philippe Wurtz sculpts the material of the wheel so that the numbers, with their extremely fine serifs, project out of the wheel in relief.
To maintain the transparency of the clockwork and especially to achieve the optimum fixedness of the pendulum hanger assembly, Philippe Wurtz has chosen an unusual design. The clockwork, with its V-shape plates, is mounted on and suspended from the heavy, robust housing lid. This strong anchoring of the clockwork is a decisive factor in the SARLAT’s excellent timekeeping accuracy. The sophisticated structure of the clockwork also deserves special mention: in place of the two thin brass plates usually used, the SARLAT’s skeleton consists of no fewer than eleven precisely fitted and screwed elements.
The SARLAT also has epicycloid gearing for the winding process. Invisible from the outside, three coaxial shafts turn independently from each other in the string barrel assembly. The movement of the clock is aided by an impressive number of ball bearings – the assembly consisting of the barrel and hour wheel alone contains eight miniature bearings, some with ceramic balls.
Another unique feature of the SARLAT is the hand that jumps by minutes when the clock is being set. An invisible mechanism ensures that the minute hand always clicks into place by the correct tick mark according to the second hand’s position.
The wheel of the gravity escapement is divided into two levels. This arrangement, which was used by Riefler, increases the effectivity of the escapement in two significant ways: it not only provides a small and increasing angle of lift but also permits the use of hybrid ball bearings in the anchor arm. This means that much less driving force is needed to operate the escapement, so that the SARLAT can operate not only more smoothly and gently, but also longer. The SARLAT can operate for 2½ months on only 2.8 kg of driving force.
Air pressure compensation in the Riefler pendulum consists of three aneroid capsules and a balancing weight. The calculation of its function is included in the calculation of the temperature compensation. True to his guiding principles, Philippe Wurtz has once again created a clock that combines technical mastery and innovation with homage to tradition and deceptively simple, elegant artistry.
|Height x Width x Depth||135 cm x 29 cm x 16 cm||135 cm x 27 cm x 17 cm|
|Pendulum||invar rod and brass weight 7 kg
with air pressure compensation
|invar rod and brass weight 7 kg|
|Driving weight||2.8 kg (made of tungsten)||2.8 kg (made of brass)|
|Duration||11 weeks||10 weeks|
|Housing||metal and glass||wooden with a semi-matte anthracite finish
(other finishes by request)