Identify balance jewels shock springs

[MechanicMike]

Hi everybody

Doing a service on a 1980s Hellbros watch with a  French movement cal. P75A and I've never seen these kind of balance staff jewel shocs before, and don't know if you can or should remove them to clean/oil. Wouldn't have a clue how to get them out anyway. They have what appears to be 3 prongs holding the cap jewel in place, but I see no notch or slot to rotate to, to get the spring out. They do rotate freely though. Sorry for the crappy pic. My phone has a lousy camera. Have to do the old pinch and zoom trick.

Need some help thanks. 

Mike

Edited January 4 by MechanicMike
Spelling police

[Neverenoughwatches]

Can you get a clearer picture from directly above please. There are a few similar to this one with prongs. If they are sharp pointed then it's probably a Ruby Neutro Shock. They are quite common in a few Swiss movements, so as you can imagine this question pops up regularly. Last time it came up I decided to strip one down.  I'll see if I can find the thread.

https://www.watchrepairtalk.com/topic/28824-as2066-balance-staff-jewel-cap-spring-adjustment/?do=findComment&comment=243648

[MechanicMike]

1 hour ago, Neverenoughwatches said:

Can you get a clearer picture from directly above please. There are a few similar to this one with prongs. If they are sharp pointed then it's probably a Ruby Neutro Shock. They are quite common in a few Swiss movements, so as you can imagine this question pops up regularly. Last time it came up I decided to strip one down.  I'll see if I can find the thread.

https://www.watchrepairtalk.com/topic/28824-as2066-balance-staff-jewel-cap-spring-adjustment/?do=findComment&comment=243648

I tried getting a clearer and more magnified pic but like I said, my phone camera is really bad and as I try for macro shots the view gets worse and completely blurry. Believe me-I've tried several times for better shots. This one turned out the best. If you open the pic up with your fingers, it gives a closer look and yes you can see the three prongs. I had no clue the name of these things-first time working on this type of movement. Thanks for the info.

Edited January 5 by MechanicMike

[Neverenoughwatches]

1 hour ago, MechanicMike said:

I tried getting a clearer and more magnified pic but like I said, my phone camera is really bad and as I try for macro shots the view gets worse and completely blurry. Believe me-I've tried several times for better shots. This one turned out the best. If you open the pic up with your fingers, it gives a closer look and yes you can see the three prongs. I had no clue the name of these things-first time working on this type of movement. Thanks for the info.

Some phones you have to back up a bit and then zoom in.

[mikepilk]

The movement is Lorsa P75A,  https://ranfft.org/caliber/7711-Lorsa-P75A, , which mentions Antichoc.

You can get surprisingly good pics by holding a loupe over the camera lens.

[MechanicMike]

2 hours ago, mikepilk said:

The movement is Lorsa P75A,  https://ranfft.org/caliber/7711-Lorsa-P75A, , which mentions Antichoc.

You can get surprisingly good pics by holding a loupe over the camera lens.

I'll try that. Thanks! Good tip. 

2 hours ago, Neverenoughwatches said:

Some phones you have to back up a bit and then zoom in.

Tried that. Didn't work. I'll keep playing around with it. I used your link and read your stuff. I posted there too. That's definitely the culprit.

[mbwatch]

Did someone already post this? I found a data sheet on Antichoc 108 showing that  it should have one horizontal protrusion and also a vertical one, so some combination of rotation and upward pull might do it. Epsilon_Antichoc_108.pdf

[MechanicMike]

23 hours ago, Neverenoughwatches said:

Some phones you have to back up a bit and then zoom in.

Tried that. Even my older version of my phone did better than this one. 

23 hours ago, mikepilk said:

The movement is Lorsa P75A,  https://ranfft.org/caliber/7711-Lorsa-P75A, , which mentions Antichoc.

You can get surprisingly good pics by holding a loupe over the camera lens.

Yep. I had forgotten to mention Lorsa. 

19 hours ago, mbwatch said:

Did someone already post this? I found a data sheet on Antichoc 108 showing that  it should have one horizontal protrusion and also a vertical one, so some combination of rotation and upward pull might do it. Epsilon_Antichoc_108.pdf

I looked at the spec sheet and I tell ya, under microscope it doesn't look like it would be a pleasant one. Neverenoughwatches had tried to go deep on one of these and remarked that it was darn near impossible and basically an "enter at your own risk" kind of deal. I decided not to attempt it.