Seiko

Noticed different types of shock protection systems in my watches. Very important little component. Upper left - Incabloc on Lange Datograph Up/Down Lower left - KIF on Habring Erwin Upper right - Seiko Diashock on Grand Seiko sbgw231 Lower right - Duofix...  

I’d always been intrigued regarding these. Any idea what the relative effectiveness is?

because it is a tiny brass spring atop an even-tinier circle of crystal, held under tension that must be released by the watchmaker but turning or unclipping it. It's a small amount of tension, no doubt, but given the low mass of the spring, it's enough t...  

The usual shock protection wasn't enough for the Charles Frodsham wristwatch due to the precision needed in the escapement. Pratt's system should be better, or so he thought. The prototypes with this system were taken on daily bicycle commutes and used do...  

Whereas the normal system just has a shock absorber on one end. Perhaps double the complexity and difficulty of lubricating, but overall that's not too much impediment in the sort of watches he was building. Mike PS 15 years ago next month with a few youn...  

The up and down movements are abosorbed by the 2 capped jewels with spring. Sideways movements is absorbed by the smaller diameter pivots ends of the balance staff.

subscribed, as they say. I guess I never really think about the shock system and what it does. I will keep viewing responses and read some myself. Is this mechanism purpose to keep the balance shafts in alignment so a force to the case does not throw the ... 

thus ruining the movement. The shaft tips are human-hair thickness for minimal thickness and mass ... thus extremely fragile and the balance can be quite large relative to these ends. Notice the red arrow pointing to the broken off tip on the right, and g...  

NT

Here are some cool ones from debethune, moritz grossman (I know the system is not too unique but the clear sapphire is pretty cool), and Bovet!! ...  

And thanks for all those who added all the rich input. This forum is amazing.

...