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9
Urban Jürgensen
Set of 3 Escapements
A set of three escapements in gilt brass with double-wheel duplex escapement, Arnold spring detent escapement and Earnshaw spring detent escapement
- Estimate
- CHF15,000 - 30,000€16,200 - 32,400$18,800 - 37,700
CHF60,960
Lot Details
- Manufacturer
- Urban Jürgensen
- Year
- Circa 1840
- Model Name
- Set of 3 Escapements
- Material
- Brass, glass and wood
- Dimensions
- 9.5cm height, 6.5cm width, 10.5cm length
- Signed
- Baseplates signed
Specialist
Full-Cataloguing
Catalogue Essay
The collector world of horological masterpieces is not only limited to objects that indicate time but can be extended to true objecs d’art that give centre stage to the heart of the timepiece: the escapement.
The present set of three escapements was made by Jürgensen's workshop apprentices in the mid 19th Century.
Each functioning escapement is housed in a glass and gilt brass vitrine atop a fine wooden base.
The double-wheel chronometer escapement model is inscribed: "Opfinden af Urban Jürgensen 1821 - denne Model udfört af hans Sönner 1841" (invented by Urban Jürgensen 1821 - this model executed by his sons 1841). Jürgensen's double-wheel chronometer escapement features a double escapement wheel. With this design, he wanted to make it easier for the oscillating system to trigger the gear train and to increase the energy supply from the escape wheel to the oscillating system.
A spring detent escapement according to Arnold with helical spring. Arnold’s escapement had the particularity of combining detachment, minimal friction and direct impulse.
Finally, a spring detent escapement according to Thomas Earnshaw, with helical spring. Earnshaw’s escapement was a simplification of Arnold’s design making it less costly and easier to produce.
The present set of three escapements was made by Jürgensen's workshop apprentices in the mid 19th Century.
Each functioning escapement is housed in a glass and gilt brass vitrine atop a fine wooden base.
The double-wheel chronometer escapement model is inscribed: "Opfinden af Urban Jürgensen 1821 - denne Model udfört af hans Sönner 1841" (invented by Urban Jürgensen 1821 - this model executed by his sons 1841). Jürgensen's double-wheel chronometer escapement features a double escapement wheel. With this design, he wanted to make it easier for the oscillating system to trigger the gear train and to increase the energy supply from the escape wheel to the oscillating system.
A spring detent escapement according to Arnold with helical spring. Arnold’s escapement had the particularity of combining detachment, minimal friction and direct impulse.
Finally, a spring detent escapement according to Thomas Earnshaw, with helical spring. Earnshaw’s escapement was a simplification of Arnold’s design making it less costly and easier to produce.