Spangles - Dr. Tabby
5595
Frodsham shock protection
Because the Daniels Double Escapement is sensitive to shock, a special system has been put in place to protect it. This is a evolution from a system originally developed by Junghans, according to Richard Stenning, director at Frodsham. I don't have the technical know-how to evaluate it, but I do hope fellow purists will comment and shed some light on it. Thanks!
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Frodsham shock protection
Because the Daniels Double Escapement is sensitive to shock, a special system has been put in place to protect it. This is a evolution from a system originally developed by Junghans, according to Richard Stenning, director at Frodsham. I don't have the te...
Metal clip at the top
I think all movements are suseptible to shock. If Daniels is more I hope someone can comment on why. On the drawing see the silver colored object on the top of the jewel? That piece of metal and one at the other end put pressure on the jewel keeping the w...
The swiss lever is much more resilent to shock
than the Daniels' co-axial (according to RWS) or the Daniels' double escapement (according to Frodsham). Why that is, I hope someone can explain, please!
It looks like the balance shaft is thicker and held more securely than a normal design
Here's a more typical configuration, with Red being the jewels and white being the shaft of the balance or gear wheels. Here's my drawing: The one you provided: ...
‘Shock protection’
What does that even mean? The problem is less breaking the balance pivot and more that of the watch randomly stopping. The problem is that the level of detachment involved in an efficient escapement such as this can leave the watch stranded with no balanc...
I don't know enough about horology to meaningfully engage with you here.
But I'd like to! There is an article about the movement I can forward you if you pm me with an email. It states, if I recall correctly, that the movement is sensitive to fairly small lateral movements, which I imagine means the movement could stop and par...
Correct on lateral issues.....
.... thanks for the document Spangles. So the critical issue appears to be to contain the lateral movement of the balance. This is because the clearance between the impulse jewels (mounted on the balance) to the escapement is only 30 microns. Now it makes...
Seems to me like there is not much shock protection at all
Looking at the picture, the balance can move up and down quite clearly, however the system doesn't provide any give to actually absorb a shock when it comes to lateral movement. If you look at a standart incabloc shockproof, the hole and end jewels are ho...
I'm wondering ...
if this design is just for public viewing, but not what is actually in the watch. As you say Ondrej, I see no anti-shock function for lateral shocks. (or are the pivots so long that they are springy themselves???) Don