Summer holidays : from July 22 to August 9 2019.
- 10 April, Good Friday
- 13 April, Easter Monday
- 1st May, Labour Day
- 21 22th May, Ascension Day
- 1st June, Whit Monday
- 11 June, Corpus Christi
- 23 June, Commémoration du Plébiscite Jurassien
Summer holidays from July 20 to August 7 2020.
Winter holidays from 2020 December 21 to 2021 January 1st
SECOND WHEEL SETS
The second wheel set carries the second hand. It is the most accurate of all the watch hands. At Joray-Wyss, we specialise in producing hand-fitting cogs.
CENTRE WHEEL SETS
A wheel set is the union of pinion and wheel. Without cogs, there would be no division of time. Its teeth and profile give us the exact time.
YELLOW GOLD-COATED HOUR WHEEL SETS
This is the wheel set that counts down the hours. Sometimes, it is coated with yellow gold, sometimes with pink gold. Often, the watchmaker decides not to gild them at all, and they become rusty and stained. In this case, they are unlikely to guarantee precision in the long term.
PINK GOLD-COATED HOUR WHEEL SETS
Here is a pink gold-coated hour wheel. It is 0.16 mm thick and measures 8 mm in diameter. Naturally, the master watchmakers take the utmost care over these components to achieve this exceptional result.
The polishing process turns plain, scratched and rough parts into smooth, bright parts which play their part perfectly in a well lubricated movement.
These pinions are “sub-assemblies” as they are known in the automotive industry. Once the pinion is assembled onto the wheel, together they form the familiar watch cog; this transmits energy to the next wheel, called the third wheel. The hole in this steel part measures half a millimetre in diameter, and is 4 millimetres long â€“ a real feat of engineering!
WHEELS WITH CHAMFERED ARMS
For customers who have a real eye for fine watchmaking, the process of creating these parts involves cutting, circular-graining, chamfering and gilding, plus bevelling on the arms ‘a true chef-d’oeuvre!
Some of our watch customers want to go above and beyond. Our master watchmakers can machine a chamfer into the surface of the wheel to create a play of light in the movement. Only true connoisseurs will appreciate this expert touch. But however subtle this detail, it adds to the overall beauty of the piece.
COUNTERSUNK SCREWS AND SCREWS WITH CHAMFERED SLOTS
In the 1970s, the watchmaking industry noticed an alarming development: screw heads began to be polished. Some argued that this was pointless. Nowadays, however, most high-end watches feature polished screws and it is seen as an attractive design element… how times have changed!