Restoring a Mosler 5H lock case with new paint/coating, some questions

[Squelchtone]

When you post pictures, could you explain why this is called a friction fence lock? I'd not heard that term before.

I believe others call it a roller fence. Basically if you turn the dial to the right, the driver has a gear attached to the back of it, which turns a gear that the roller fence is mated with and that rotation makes the roller fence move out of the way and never test the hang change wheel pack, but if you turn the dial Left the gears make it so the fence rides the wheelpack and tests to see if it can drop in.

Yale OC-5, Mosler B-6, and others use the same mechanical operation.

like in this photo from google:


Squelchtone

[Doug MacQueen]

The two I have taken apart have been the same design made of 3 parts, fence, tube and a tiny flat spring. The tube is machined down very thin at one end. This end is then slotted across leaving two curved sections that are then bent over after assembled. Getting under these bends and straightening them up is extremely difficult without damage. Since work hardening occured in bending them, read up on annealing copper and brass before trying to straighten them.

[djed]

Well I melted the gear (using my OA torch) but I did get the tube out.

No flat spring inside. Nor is there a channel where I expected the spring to sit.