I've just bought a Swatch, and on the back it says Patented water-resistant...... four(4) Jewels, I also went on e-bay to look at watches and found some realy old (50's/60's) watches with 17 and 23 jewels in them, I guessing the jewels aren't diamonds or emeralds etc so what are they? and why are they in the watch?
2006-11-21 01:06:56 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Jewels are used as the bearing surfaces for pivot points and gear axles. They are tiny precious stones.
Because they are so hard they do not require lubrication when polished.
In mechanical watches there were always an odd number of jewels due to the single jewel in the escapement. Modern crystal oscillator types have no escapement so the low even number of jewels is because of the reduced number of pivots in the watch compared to old gear driven watches where jewels are used in pairs plus one for the escapement.
More jewels usually means a higher quality and more accurate watch.
2006-11-21 04:45:20 · answer #1 · answered by Buffertest 3 · 1⤊ 0⤋
4 Jewels Watch
2017-01-19 07:47:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Ill only add to this answer. Most of the time, the jewels are made from real rubies (older watches) or synthetic rubies (newer watches), and are usually only present in mechanical/automatic movements. As stated above, they serve the purpose of low friction bearing surfaces for all the little watch parts. Usualy the synthetic rubies are preferred, not so much for their ease/cost, but also because they can be made to extremely tight tolerances. Also, contrary to popular belief, the more jewels is not necessarily better, which is explained in the link below:
2006-11-21 05:09:54 · answer #3 · answered by Daniel W 3 · 0⤊ 0⤋
The jewels individually are worthless industrial rubies used as bearings, resistant to wear from moving steel parts. Originally this would have been a selling point as older movements would have suffered from steel on steel erosion. Obviously the mention of jewels has a ring of quality and im sure this would also be a factor in enhancing sales.
2016-03-29 04:08:28 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Jewells or glass is used as weight to keep the watch in time. I'm guessing its a cogged one not battery.
I asked this when I got mine.
2006-11-21 01:18:00 · answer #5 · answered by evany 4 · 0⤊ 2⤋
the "jewels" in a watch are actually the screws that hold it together.
the higher number of "jewels" indicate the quality of the watch
2006-11-21 01:17:00 · answer #6 · answered by Anonymous · 0⤊ 2⤋
Quartz/Rubys They dont corrode
2006-11-21 07:38:46 · answer #7 · answered by bigmofokev 2 · 0⤊ 0⤋
Bufferts.... is correct. the first two answers illustrate stupidity presented as fact.........be careful
2006-11-21 12:46:48 · answer #8 · answered by jackwp2000 2 · 0⤊ 0⤋
I personally bot my daddiekins one and it turned out to be just glass fakes. :(
2006-11-21 01:09:58 · answer #9 · answered by Victoria Isabella 2 · 0⤊ 3⤋