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Eagles table top clock by a C.Amadei


GeorgeClarkson

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A couple of years ago a very old lady living next to us ( she was 90) and with whom I was befriended and took care for together with my wife (relatives basically abandoned her to live alone in that flat, bit she was almost self sufficient) passed away after a couple of weeks in the hospital, but before she was gone, she presented me with her clock, a 2 eagles wooden clock signed by a C.Amadei that needed some love, just like her.

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I have never heard of C.Amadei but I expect its who made the case. From what I can see at the back the movement is a 30 hour movement with a balance wheel it might be 8day but I doubt it, the type of movement you would expect to find in a case typical clock insertion movement. I don't now if this type of movement is made today, back in the 70's and 80's you could buy replacement movements to fit for a few pounds it even included dial, hands and back plate. To remove the moment, undo the key and pull the hand set off, undo the nuts and pull the movement out. The pallets will be of the pin type. This is the type of movement I would start an apprentice with, simple and easy to understand. Sorry you don't have a Thomas Tompion.:D  

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The movement has already been service 1 year ago actually, i made photos but never posted them, was too busy and not my focus, I will post them next week.

I opened this thread now since I noticed that it has staffed to run fast, it gained 15 minutes in 12 hours.

I installed an app on my mobile, not a timegrapher, but gives an approximative idea. Here the screenshot

Screenshot_20170108-091906.png

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Could the clock been exposed to any magnetic force. Must be worth a look at the hairspring to see if any "Crud" has found its way between the spring coils?
The carving on the case looks really nice. Could it be French or Austrian with those eagles. Looks Frenchy to me ?

Sent from my SM-T585 using Tapatalk

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That is what I expect to see, looks like a 30 hour movement. With this type of balance staff they tend to lose their point so the action of the balance can be poor, so the balance is put into a lathe minus the hairspring and is sharped into a point on both ends, sometimes with lack of oil the cups wear and have to be repaired or replaced. The hairspring should bounce in the regulator from one end to the other in order for the regulator to work properly.   

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The 1 minute you see on the screenshot is not real, it was still adjusting when I took that screenshot, then had to leave the room since my baby daughter was calling.... When I returned, it had settled around +4 minutes, but with a baby on the hands it is hard to mess with the mobile to take a screenshot.

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    • Hello everybody, sorry for the late reply. Thank you all so much for your help and your tips. I got lucky and found a replacement wheel bridge for cheap which actually ended up being in decent condition. I decided not to do anything about the mainspring barrel pivot since I didn't have the right tools and the barrel didn't have much endshake anyhow. I am happy to report that the watch now runs great, I have regulated it to about +-10/s day which is fine by my standards. The timegrapher result looks decent as well, although beat error is around 0.6ms which could be better I suppose. Amplitude reaches over 230 quite consistently which I'm happy with also. My lighter fluid has also been replaced by balance spring cleaning solution and now the springs don't stick to themselves anymore - who would have thought. I'm super happy with this watch, it might not be worth a whole lot but it's awesome that I could restore it and it makes me wear it with pride. To me it's a genuinely good lucking watch, it'll be my daily driver for a while. Thanks again to everybody for their input! I couldn't have done the repair without your help.   Here are some images for those interested, the bracelet isn't original but I don't really mind:    
    • Balance-hairspring system is oscillator with big Q-factor. When all in the movement is OK, the rate (frequency) is verry close to the own resonant frequency of the balance-hairspring. But in some cases, the movement (with foult) will force the resonator to work on pritty different frequency, sometimes faster, and sometimes slower. When this happens, the amplitude is always weak. So, the first thing to ask is what is the amplitude. If it is more than 180 and the hairspring doesn't touch itself and anything else, then for sure it is 'short'. If the amplitude is weak, then the first thing to do is to understand why and rectify the problem. At this time no point to check timekeeping. But, if one doubts that the hairspring is not correct, then He needs to calcullate the rate of the movement, then to 'vibrate' the balance-hairspring out of the movement and to measure the free oscillations frequency (period) with timer in order to ensure that they comply with the rate. If we have pictures, then it will be easier to tell something about that wheel.
    • So much work has gone into this! Thanks again @Jon. I will go back and check my adjustments from last weekend. A few questions for you, if you don't mind. In the reset position, I can understand the problem if the gap between the hammer and the minute counter heart is too big (slide 77) but what is bad about both hammers being in contact with the cams (slide 76)? I read somewhere that Landeron recommended grease on the runner cam, but the minute counter heart should be dry. Is that so, and why? How many tads in a ligne?
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