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Hamilton Grade 974 size 16s center wheel pillar plate jewel replacement


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hi all

I have a Hamilton gr 974 size 16s that needs a new center wheel jewel in the pillar plate. This is my first encounter of this type and so far what I've read is this type of jewel setting is one of the most difficult, if not the most difficult to repair due to its hybrid friction setting. it seems it's a two part setting to include the jewel, set into an either steel or bronze hub, then the beveled edge in peened over to hold the jewel, and then another beveled edge on the opposite side is peened over to affix the entire setting into the pillar plate. Anyone have any experience or advice before I attempt this one? below are the sorry excuses for pictures showing the plates side by side. the one on the left contains the donor jewel, and the one on the right is the missing center jewel. the third and second to the last is the donor jewel and the last is Section 300 out of the book, The Chicago School of Watchmaking that shows a cross sectional view of the procedure. Again, advice needed! i have to do some running but will check back later.

 

 

 

apologies on the late wish: to our friends across the pond-my sincerest sympathies on the passing of Her Majesty, Queen Elizabeth. A great, remarkable and very special lady indeed. 

HAMILTON GR 974 PILLAR LATES.jpg

HAMILTON GR 974 MISSING JEWEL DRIVE SIDE.jpg

HAMILTON GR 974 MISSING CTR JEWEL.jpg

CTR DONOR JEWEL.jpg

CTR DONOR JEWEL DIAL SIDE.jpg

CHICAGO SCH. OF WATCHMAKING SECT. 300.jpg

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Wish I could help, and hope someone will chime in with some suggestions.  I have been lucky so far, and haven't had to remove/replace any of these pocket watch jewels. 

If I'm remembering correctly, replacement jewels were sold already mounted in the settings.

I have the vintage tools for opening the beveled edge, but I don't yet have the tools to rub the metal back over the setting. 

I'm sure that after I've destroyed a few vintage plates it will become easy 🙂

Cheers!

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On 9/13/2022 at 8:28 AM, dadistic said:

Wish I could help, and hope someone will chime in with some suggestions.  I have been lucky so far, and haven't had to remove/replace any of these pocket watch jewels. 

If I'm remembering correctly, replacement jewels were sold already mounted in the settings.

I have the vintage tools for opening the beveled edge, but I don't yet have the tools to rub the metal back over the setting. 

I'm sure that after I've destroyed a few vintage plates it will become easy 🙂

Cheers!

yup you're correct-they were factory set and sold as one unit. unfortunately finding one is slim to none. what tool do you have that opens the beveled edge? do you have a picture? is it a staking tool? or a conical concave for closing holes? thats why I'm taking my time on this one. I only have one donor plate so far!

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On 9/16/2022 at 2:54 PM, dadistic said:

The picture below is what I have, the bottom of these is flat

ah yes. I am familiar with those. don't have them but i'll see the condition of the beveled edge soon enough. according to the book when you stake out the setting, it's supposed to straighten out the bevel. oh boy looking forward to this one. thanks for the vid link!

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