Urban Jürgensen - P8 Ref. 11C Automatic Chronometer
Basel 2012
A detent escapement chronometric results that offers 40% higher.
Watch brand Urban Jürgensen & Sønner presents P8 Chronometer Ref.
11C Automatic, a world premier model equipped with the first automatic
movement to ever integrate a pivoted detent escapement within a
wristwatch. The first model in the P8 Chronometer line was P8 Reference
11L launched in 2011, which featured a Swiss lever escapement. The new
Ref. 11C Automatic model features a patented pivoted detent escapement.
The newly introduced
Urban Jürgensen Reference 11 represents the first
time that the chronometer escapement has been used in a wristwatch. The
invention is the result of several years' development work and has been
patented world wide. In the past
25 years, in addition to individual,
often complicated unique watches,
Urban Jürgensen & Sønner also
created wristwatches in small series from 50 up to a maximum of 300
examples. These watches were mainly based on ébauche movements from
Frédéric Piguet, Le Brassus.
The long-held wish for a true
UJS movement, with strong emphasis on
precision, reliability and long intervals between servicing, has been
addressed since
2003. In the
19th century,
Urban Jürgensen & Sønner
was the official chronometer maker to the Danish Royal Household and to
the Admiralty. The quality of the marine chronometers from the house of
Jürgensen was legendary. In order to close the loop from the past to
modern times in an elegant and meaningful manner, development of a new
movement and the chronometer escapement, suitable for use in a
wristwatch, was undertaken. A particular problem was to ensure the
necessary shockproof characteristics of the escapement. Having achieved
this, the invention was patented on a world-wide basis by
Urban
Jürgensen.
The new movement
UJS P8 is introduced to the market in two versions. The
first model was with a traditional Swiss lever escapement and the
second with the newly introduced detent escapement, a "first" in
wristwatches.
The first watches with the new movement are the
Reference 11L (lever
escapement) and
11C (detent escapement), which maintain the appearance
of the traditional
Urban Jürgensen wristwatch. The References 11 will be
cased in either platinum or rose gold and follows the typical company
tradition of a hand engine-turned silver dial displaying hours, minutes,
seconds and power reserve (ref.
11C).
From 1773 to today, the house Urban Jürgensen has not stopped its production of watches! From 2003 she is working on a class of exception that will house the link between high precision instruments made at the time and contemporary mechanical watchmaking. Research culminating with the connivance of the master watchmaker Kari Voutilainen and designer Jean-François Mojon, after the disappearance of Peter Baumberger in 2010.
Introduced last year, the P8 Stopwatch with detent escapement COSC certification and provides the results of chronometric 40% above average and allows a versatility rare complications included.
The novelty in 2012, the P8 Automatic Chronometer is the first in a family of integrated P8 complications of UJS.
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Technical Specifications
Escapement
ref.
11C: pivoted detent escapement
ref.
11L: Swiss lever escapement
Movement
Mechanical self-winding caliber UJS.P8 ,
double barrel and pivoted detent escapement,
Barrel bridge specific module incorporating automatic mass of gold (18K),
-
Diameter: 32 mm Height: 5.25 mm
-
Power source: Two barrels in series
-
Power reserve: 88h running time, indication by means of patented differential system
-
Balance: Freesprung, diameter 12.0 mm, moment of inertia 24 mg.cm2Power Reserve 88 hours
Case, Dial & Strap
Case: waterproof, saphire crystal back, platinum or 18 ct. rose gold, diameter 42 mm
Dial: Hand-engine turned silver dial, indication of hours, minutes and seconds, power reserve indication (88h)
Bracelet: leather, rose gold or platinum buckle
The chronometer escapement
The invention and development of the chronometer escapement, towards the
end of the
18th century, was ascribed to
John Arnold,
Thomas Earnshaw,
Pierre Le Roy and
Ferdinand Berthoud. The new escapement proved to be a
horological milestone that very quickly improved the precision of
timekeepers. This characteristic was particularly decisive for
navigation on the oceans of the world. The chronometer escapement
delivers impulses directly to the balance from the escape wheel, without
an intermediate component such as the lever in most modern watches.
Each oscillation of the regulating organ, the balance and the spring, is
only disturbed once, not twice as in other escapements. This
arrangement is highly advantageous for the precision of the timekeeper.
The escapement has a pivoted arm controlled by a fine spring. It is this
detent which allows the escapement to be locked and unlocked as
required.
Urban Jürgensen has succeeded for the first time to develop and put into
practice a chronometer escapement that meets the highest requirements
of reliability and resists the shocks to which a wristwatch is
subjected.
UJS P8 Calibre
Introduced by
Urban Jürgensen in
2012, the innovative self-winding
caliber
UJS P8 is the first automatic movement to ever integrate a
pivoted detent escapement within a wristwatch.
This new automatic wristwatch based on in-house
Caliber UJS P8 results
from specific development research. The automatic winding is an
integrated element specially developed for the caliber using the
following special elements:
1.
The very functional and reliable automatic module provides easy access for after-sales service and maintenance
2.
The pivot and spring barrel bridge are intimately connected with each other.
3.
The gold rotor mounted on a jewel bearing results in a simplified automatic system with little vulnerability
4.
The unidirectional winding rotor and its ratchet wheel, which boasts an optimized tooth shape, is perfectly user-friendly and effective.
5.
Five jewels in the bridge prevent the rotor being damaged even if it experiences great shock.
6.
Rotor weight : 3,86 g
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OFFICE
Urban Jürgensen.
Chemin Creux 18. 2503 Biel/Bienne.
Switzerland.
Tel: +41-32
365 1526.
Fax: +41-32
365 2266.
info@urbanjurgensen.com
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