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AS 1250? bumper movement

TKM3RD
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TKM3RD Member

TKM3RD

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Hi there. My current project is the overhaul of what I believe to be an A. Schild 1250 bumper movement. It looks very similar at any rate. While in the disassembly process, I took off the rotor (fig 1), and then the automatic winding bridge. This revealed some wheels and what appeared to be a piece of hair. I tugged the "hair" and parts went flying. Turns out it was a spring attached to a pawl for the winding wheel. I put the bits back where I thought they should go and took a picture (fig 2).

I finished breaking everything down, cleaned the parts and am ready for reassembly. Though it will be one of the final stages, I am really stressing out because I have absolutely no idea how the pawl and spring should fit. I guess I'll have to wait and see if I can figure it out, but in the meantime, if anyone has experience with this movement, any help would be appreciated.

AS1250_Fig_1-001.JPG

AS1250_Fig_2.JPG

TKM3RD Member

TKM3RD

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Posted (edited)
19 minutes ago, rjenkinsgb said:

It appears to be an AS1171; rather different from the AS1250.

https://www.emmywatch.com/db/movement/a_schild--1171/

Those appear to have been quite widely used rebranded, I found such as Rima and Rensie / A Raymond branded ones while trying to trace it.

 

If the click and spring are the same as the base movement, this shows the assembly:

 

Quite right you are about the caliber number, thank you. At least I was in the ballpark 🙂

It is branded and cased as an Easton "Quadramatic" militrayesque watch. It's quite pretty.

Anyway, I'll have to review the video when I get off work. Thank you for the assistance!

Edited by TKM3RD
additional information
TKM3RD Member

TKM3RD

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Well, thanks to all the help. 🥳

I got it together without drama, although it is running like a two legged cat in a mousetrap factory. Tick-tick-tick---tick-tick-tick-tick-tick---tick-tick and so on. Rate=+570, AMP=317, BE not picking up.

Sure is a pretty little thing though!

Thank you all again.

Screenshot_20240821-152847~2.png

IMG_20240821_145733544~2.jpg

Nucejoe Distinguished Member

Nucejoe

Posted
Posted

 I concur with AndyGSI,

  Frequency is 18000 , your tg shows 19800.

I bet you haven't replaced the mainspring.

AND always dispower the movement through the click, before starting disassembly, to prevent parts from  flying, damage to the pallets face and escape teeth ,...etc.

Good luck.

 

TKM3RD Member

TKM3RD

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19 minutes ago, Nucejoe said:

 I concur with AndyGSI,

  Frequency is 18000 , your tg shows 19800.

I bet you haven't replaced the mainspring.

AND always dispower the movement through the click, before starting disassembly, to prevent parts from  flying, damage to the pallets face and escape teeth ,...etc.

Good luck.

 

@Nucejoe, nope, didn't replace the mainspring. I always release the power, and generally the first thing put into safekeeping - after the dial and hands - is the balance assembly. Thanks for the reminder though 🙂

I'll have to check the Timegrapher settings.

Oh, there is no luck involved: I either do it right or I screw it up. S-l-o-w-l-y getting to the 60-40 mark.

Thanks again!

 

TKM3RD Member

TKM3RD

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Posted

Ah-ha! Eureka!! 🥳

I couldn't let it go. I took the balance assembly off and really looked carefully at the hairspring. Lo and behold, there was a very, very, fine thread tangled in the coils. 😱 It was buggering up everything.

Got it out, cleaned and oiled the upper and lower jewels, got it back together, and just like that, the snow storm on the TG stopped! I had a good trace, albeit a fast one, but it's settling in for a day or two, and then I'll regulate it. 

Overall, I'm happy. 👍😎❤️🎉

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