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One of the little items left over from my dad’s watchmaking career, included a small piece of about 18s blue mainspring material, in a small box marked “Potence clip”.
It’s about two inches long, bent in half, and on one end it has a small notch filed into it.
It took me awhile to figure out what it was used for, and it’s a device for holding the pallet assembly in place while you are reassembling a full plate pocket watch.
If you don’t know,..the potency is the small “cup” on the upper movement plate that holds the lower balance jewels, and the end of the pallet fork has to sit inside it, during assembly
Most watch repair types
put these together “upside down” so that the fork stays in place.
With this clip, you can hold it in place and then simply flip the upper plate into the other, and wiggle the pivots into their respective holes.
Once everything’s in place,..you just slide it out.
NOTE : Put the outside end of the clip to your left. If you put it to the right, it will sit onto one of the other wheels when you flip it over.
I’ve included ( hopefully ) 3 shots that show the clip, the clip holding the pallet fork, and then both plates side by side for reference.
Yes,..I do know that this movement is missing a banking pin…..
Sorry if the file sizes are large..I couldn’t get them adjusted correctly !
Hope this helps some of you in the future.
Hey Randy, I wanted to wait to post about this as I knew I had a full plate movement to work on. I made a clip similar to what you have shown, It worked great, made life a whole lot easier, Funny how simple a tool or technique can work so well. Thank you for the great idea.
William
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