Waltham 1894 Model

This movement is a Waltham 12 size, 15 jewels, 1894 model, grade 220.

This is the balance wheel with the single roller and the hairspring removed. It's a little hard to see but the hub in the center is blued steel. This signifies, on these Walthams, that this is a friction staff. It should not be cut off in the lathe. The hub is actually part of the balance wheel, not the staff at all. The old staff is to be pushed out in the staking tool.

The balance wheel gets push on to the new staff. It's critical to have the right sized stacks for this job to avoid distorting the balance wheel, or worse. It is also pretty snug, so it's important to go slow.

 This is the balance wheel, broken staff removed, the hairspring, roller table, and the replacement staff. The replacement part has a tiny bit of rust. It will just take a minute to clean it up in the lathe. Quick polish is all it needs...

 These are the parts of Waltham's "shipper" mechanism used for winding/setting on many models and sizes of Waltham pocketwatches. It's a little tricky to work with, without sending the shipper spring flying, but it's not bad once you get used to it. Correctly assembled it works better than other designs I have seen too.

 Here is the arbor and clutch.

And here are all these parts carefully put in place. They get covered and held by a clamp.

These are the parts of a Waltham motor barrel, or safety barrel.

This case is called a "cushion case" because of the rounded square shape.