I think the Japanese did a pretty good job at coping these American movements. Repairing these are no more work than repairing the American movements the are copied from. This is a customers clock and should be treated as a familiy heirloom unless they explicitly tell you otherwise.
Your escape wheel pivot hole(s) are badly worn. In your last video you can actually see the pivot bounce with each tick, really noticeable around 19 seconds in. Also, I think your suspension spring is way too long. Good work on the pallets and crutch loop.
Looks like a Phillips head screw holding the music box in. Are you sure everything is original? Changing gears on the music box will likely change the tempo of the music. Is your replacement ratchet wheel an exact duplicate?
I’ve always wondered how you can break off an arbor with just your fingers on key. I suspect most of these arbors are broken by repairmen twisting them in a spring winder. Who here has broken on with just key?
Most if the french clocks I’ve worked on that were missing screws used BA threads. BA is British Association. Very hard to find in the states. Tap and die sets are available from overseas suppliers.
You don't always have to cut the hole square. When I needed to make a square hole for a gathering pallet I was making I ground this nail set square and tapered. Drilled a hole in the gathering pallet and pounded in the punch. turned it over and repeated on the other side. If I recall...
The pin could be from the gathering palette. When that pin falls out the symptoms are cuckooing that never stops.
If you remove the hands and the dial, you will see the gathering palette as a small kidney shaped brass disc partially covered by the rack, which is the curved saw toothed lever...
Congrats bangster. We knew the cat would help you out sooner or later. :cool:
Btw, I like these Revere clocks. If anyone has Revere grandfather clock from the ‘30’s that’s complete I’d be interested in it. Just pm me. :)