It's a motor barrel so the barrel came right apart as I disassembled.
The movement is an Elgin grade 240, 18 size, 19 jewels, B. W. Raymond model, made about 1909.
Assembly seemed to go well... at first.
At first I thought either of the parts might be an incorrect substitute. Some Elgin bevel pinions have an extra shoulder at the back that would perhaps cause it to sit further up. But I was able to determine that all these parts were correct by comparing them to a Veritas I happen to also have on the bench. The bevel pinion can move up, as shown here. But the clutch is as far back as it can go in winding mode in this image. What could the trouble be? Quite a mystery...
In the old Google+ days it was easy to turn this sort of thing into a watchmaking puzzle and post the answer later. Here, I guess I'll just go right ahead and divulge the problem.
On the dialside where the lever is, there is a spring loaded cam that pushes the clutch into winding mode "by default". When the lever is pulled out, it pushes the setting lever, and thus the clutch forward into setting mode.
The setting lever cam was installed incorrectly such that the spring pushed the clutch into setting position, and block it from going all the way back for winding. The direction the clutch push by default was the clue. The last person in this watch took the setting lever off and and put it back on the wrong side of its spring.
This shows riveting on the new staff.
The roller table for this movement is a double roller in two parts. I guess I didn't take a picture of that. It takes some extra careful work to assemble. You can see one of these here.
Running well so far...
I replaced one of the plate screws that was an incorrect style, and added a couple of timing washers. It's now ready for a few days of testing.
No comments:
Post a Comment