Bushing inside of a bushing & feather question

[Ray Snead]

I am working on an Ingraham 8 day movement with a front escape. The movment is marked 12 on the left side of the front but there is no mark on the right. Haven't seen this before but I digress.

The back of the fourth wheel of the time train is loose by around 20% of the thickness of the pivot. I've found this pivot to be especially sensitive so I'll always rebush it when I take the clock apart for cleaning if there is any play there at all. In this case, the pivot has been bushed before with a bushing that is 4MM thick! This is over twice the diameter of a KWM replacement for this pivot. What is the correct solution for this problem? I've tried to get a decent picture that shows the bushing to be ~ 5mm across.

http://static.flickr.com/79/229515052_3d44ca8779.jpg

Second question. The pendulum suspension of this clock seems to have been altered. There is only 1/4" of spring between the chops and the end of the pendulum rod. The pendulum spring is just less than half the length of my standard replacements. I am wondering if the spring may have broken and someone just redrilled and reattached it. There is plenty of clearance below. How do you go about finding a close aproximate length to start a new pendulum suspension?

I've also attached a better picture of the feather. I looks like it slipped up a hair as I was trying to get the picture but you can still see how short it is.

http://static.flickr.com/68/229517990_2be0b5c155.jpg

Thanks in advance.

[Ray Snead]

I am working on an Ingraham 8 day movement with a front escape. The movment is marked 12 on the left side of the front but there is no mark on the right. Haven't seen this before but I digress.

The back of the fourth wheel of the time train is loose by around 20% of the thickness of the pivot. I've found this pivot to be especially sensitive so I'll always rebush it when I take the clock apart for cleaning if there is any play there at all. In this case, the pivot has been bushed before with a bushing that is 4MM thick! This is over twice the diameter of a KWM replacement for this pivot. What is the correct solution for this problem? I've tried to get a decent picture that shows the bushing to be ~ 5mm across.

http://static.flickr.com/79/229515052_3d44ca8779.jpg

Second question. The pendulum suspension of this clock seems to have been altered. There is only 1/4" of spring between the chops and the end of the pendulum rod. The pendulum spring is just less than half the length of my standard replacements. I am wondering if the spring may have broken and someone just redrilled and reattached it. There is plenty of clearance below. How do you go about finding a close aproximate length to start a new pendulum suspension?

I've also attached a better picture of the feather. I looks like it slipped up a hair as I was trying to get the picture but you can still see how short it is.

http://static.flickr.com/68/229517990_2be0b5c155.jpg

Thanks in advance.

[bchaps]

Hi Ray. First, verify the large bushing does position the wheel properly...meaning it is perpendicular to the plates in all directions. Yes, If I had to rebush a 4mm diameter bushing which is tight in the plate, I would attempt to palce a bushing within it. The KWM #3 reamer will cut a 2.68mm diameter hole, so that doesn't leave a lot on the sides. If a bush inside a bush fails, you'll have to either make one or find a standard that will work for you.

Concerning the suspension rod, just get a replacement. Keep a small supply on hand because this is a regularly replaced item.

Bill

[Scottie-TX]

Tryin' to figure out the purpose of the split post below the chops. Looks to me like regulation begins at the split post and not the chops.
Does the pendulum bob have a regulating nut? Can you achieve regulation as it is? If so, the current one is just fine.
If you cannot achieve regulation - install a feather of length that will.

[shutterbug]

I recently had a case like yours - a large bushing. When reaming it for the new bushing, the thing screwed itself out of the movement - yep, one of those "replace the bushing without ever taking the movement apart" screw in things. I kept it, and bushed inside it, but that may be what you have too. What a thing to do to a clock!

[Mike Phelan]

Ray
(1) Just make a larger bush to fit the big hole
(2) If it is within rate, OK, if not, take a close look at wear marks caused by the crutch on the pendulum rod.

[Chris]

I just had the same bushing issue last night. I'm working on a parts movement that I bought and decided to fix for future installation. Someone used those damned screw in bushings as well. They stuck out of the plates about a quarter of an inch! I'm working on a miniature Waterbury used in china clocks.

I removed the old bushings and found the closest size bushing to the threaded hole. I made sure it was a bit oversized and then reamed the hole out. I inserted the new bushing and tapped it front and back with a ball peen hammer to make sure it was secure (most of the marks would ream away in step 2.)

I then found the proper bushing in my set and reamed the first bushing carefully so as not to disrupt it. I popped in the second one and was good to go!