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A. Lange & Söhne  The official account of A. Lange & Söhne // #alangesoehne

1815 TOURBILLON Special Edition (6/9)
For a long time it was impossible to instantaneously and precisely stop and restart watches with a tourbillon for synchronisation purposes. In 2008, Lange’s calibre designers finally found a solution when they succeeded in braking the balance inside the rotating tourbillon cage directly and without delay. When the crown is pulled, a complex lever mechanism is activated which presses a movable V-shaped spring onto the balance wheel and stops it instantaneously.
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#alangesoehne #1815tourbillonenamel #1815tourbillon #watchmovement #hautetime #watchmaking
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Video: Interaction of the tourbillon stop and ZERO-RESET

1815 TOURBILLON Special Edition (5/9)
The complexity of this A. Lange & Söhne timepiece is reflected in the 13.2-milimetre minute tourbillon suspended beneath a black-polished bridge.
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#alangesoehne #1815tourbillonenamel #1815tourbillon #germanwatches #horophile #hautehorlogerie
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Picture: Close-up of the 1815 TOURBILLON’s tourbillon cage

1815 TOURBILLON Special Edition (4/9)
The ZERO-RESET mechanism of the 1815 TOURBILLON interacts with the stop-seconds mechanism for the tourbillon to assure one-second accuracy when stopping and setting the timepiece.
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#alangesoehne ##1815tourbillonenamel #1815tourbillon #watchmaking #watchart #watchmovement
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Video: Stopping the tourbillon

1815 TOURBILLON Special Edition (3/9)
Lange manufacture calibre L102.1; 262 movement parts; 20 jewels, including one diamond endstone; 3 screwed gold chatons; lever escapement.
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#alangesoehne #1815tourbillonenamel #1815tourbillon #enameldial #manufacturewatch #hautetime #watchmakers
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Picture: Caseback of the special edition of the 1815 TOURBILLON with an enamel dial

1815 TOURBILLON Special Edition (2/9)
Four years ago, in the 1815 TOURBILLON, A. Lange & Söhne first combined the stop-seconds mechanism for the tourbillon with the ZERO-RESET time-setting feature. Together, the patented mechanisms allow the watch to be stopped and then set with one-second accuracy.
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#alangesoehne #1815tourbillonenamel #1815tourbillon #watchmovement #timepieceperfection #watchart
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Picture: Close-up of the 1815 TOURBILLON

1815 TOURBILLON Special Edition (1/9)
The 1815 TOURBILLON, A. Lange & Söhne’s first tourbillon watch with stop seconds and ZERO-RESET, is now available in a special edition with an enamel dial.
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#alangesoehne #lange1815 #1815tourbillon #horophile #enameldial #hautetime
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Picture: Special Edition of the 1815 TOURBILLON with an enamel dial

Patents of A. Lange & Söhne (1/9)
More than 200 years after the tourbillon was invented, A. Lange & Söhne demonstrated how the oscillating balance inside a revolving tourbillon cage can be stopped to finally allow precise time-setting in watches endowed with this complication. Pulling the crown triggers a complex lever ensemble that pivots a movable V-shaped spring into the balance rim. It instantly stops the balance. When the crown is pushed, the “brake” is released and the balance instantly begins to oscillate again. Patented in 2008, the mechanism is integrated in the LANGE 1 TOURBILLON PERPETUAL CALENDAR, the 1815 TOURBILLON and the DATOGRAPH PERPETUAL TOURBILLON, among other models.
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#alangesoehne #tourbillon #1815tourbillon #hautehorlogerie #timepieceperfection #manufacturewatch
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Picture: Stop seconds for the tourbillon, patented in 2008

Patents of A. Lange & Söhne (2/9)
The Sax-0-Mat is still the basic calibre for the LANGEMATIK PERPETUAL and the SAXONIA ANNUAL CALENDAR.
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#alangesoehne #langesaxonia #saxoniaannualcalendar #langematik #watchart #watchmovement #watchmaking #germanwatch
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Picture: Zero-reset mechanism, patented in 2000 and the SAXONIA ANNUAL CALENDAR

Patents of A. Lange & Söhne (3/9)
In 1997, A. Lange & Söhne introduced an advanced and elaborate self-winding movement. The multiple-award-winning Sax-0-Mat calibre features an integrated Zero-Reset mechanism that stops the balance when the crown is pulled and instantaneously moves the seconds hand to the zero position, much like in a chronograph.
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#alangesoehne #langesaxonia #saxoniaannualcalendar #watchart #hautetime #watchmakers
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Picture: Zero-reset mechanism, patented in 2000 and the SAXONIA ANNUAL CALENDAR

Patents of A. Lange & Söhne (4/9)
To assure the seamless functionality of the complex calibre in the ZEITWERK MINUTE REPEATER, the engineers have integrated elaborate safeguards in the movement. As an example, the numerals discs cannot advance while the striking mechanism is active and until the repeater sequence is finished. A switching operation while the repeater is active could result in mechanical conflicts and damage the movement, because the snails of the repeater mechanism are attached to the arbors of the jumping numerals discs. The delay also assures that the acoustic signal always corresponds to the displayed time.
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#alangesoehne #zeitwerk #langezeitwerk #zeitwerkminuterepeater #hautetime #montresmecaniques #watchmakers
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Video: Delayed numerals switching of the ZEITWERK MINUTE REPEATER, patented in 2015

Patents of A. Lange & Söhne (5/9)
In all models of the ZEITWERK watch family, the patented constant-force escapement between the barrel and the balance acts as a pacemaker for the instantaneous advance of the numerals discs in one-minute intervals. At the same time, it makes an important contribution to rate stability by assuring that the balance is powered with a consistent amount of force throughout the entire power reserve duration. The moment of retension and the energy freed during that process is used to switch the numerals.
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#alangesoehne #zeitwerk #langezeitwerk #watchmovement #germanwatch #timepieceperfection #manufacturewatch
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Picture: Constant-force escapement of the ZEITWERK family, patented in 2010

Patents of A. Lange & Söhne (6/9)
With their precisely jumping numerals display, all the ZEITWERK models stand for uncompromising clarity of design. Consisting of three discs, the display module is arranged in such a way that the time, with large-format numerals, can be read from left to right in the natural way. With a gentle click and hardly discernible to the human eye, the constant-force escapement advances the patented jumping numerals mechanism from minute to minute until, at the top of the hour, all three numerals discs simultaneously jump forward by precisely one increment.
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#alangesoehne #zeitwerk #langezeitwerk #watchmovement #watchart #hautetime #masterwatchmaking
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Picture: Jumping numerals display of the ZEITWERK, patented in 2011

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