Hebdomas 8 Day Pocket Watch – Damaged Mainspring Barrel

Ref: A.Venus
There was two major issues and one minor one which I have resolved.
First, a small section of maybe 8 teeth on the mainspring barrel was damaged. The only proper way for repair that would be to manufacture the whole barrel but there are two disadvantages to that. i) The character of the watch would be permanently marred. ii) And the cost. So I filled the damage with silver (harder than lead so will last longer) by welding silver solder. And this is now allowing the winding pinion to grip the barrel throughout the 360ºs.
Second, excess wear on the train wheel bridge (originally thought it was the main plate) which was causing too much movement with the winding stem. With this I had no option but to weld some packing material (sterling silver) to the bridge and then re-shape it back. This was successful.
The minor issue was the setting lever screw, which was missing and allowing the winder to be pulled out of the watch. I re-worked a screw from another watch of similar age and this is now doing the job of retaining the winder just nicely.
Finally, I cleaned and lubricated the movement.
8_day_pocket_watch_1020_001 8_day_pocket_watch_1020_002 8_day_pocket_watch_1020_003 8_day_pocket_watch_1020_004 8_day_pocket_watch_1020_005

Motion work - quite dirty
Motion work – quite dirty
Watch escapement
Watch escapement

8_day_pocket_watch_1020_008

Barrel removed from the watch
Barrel removed from the watch
The mainspring barrel
The mainspring barrel
The damaged barrel teeth
The damaged barrel teeth
How the teeth should be
How the teeth should be
The damaged barrel teeth
The damaged barrel teeth
The damaged barrel teeth and winding pinion
The damaged barrel teeth and winding pinion
The damaged barrel teeth and winding pinion
The damaged barrel teeth and winding pinion
The damaged barrel teeth and winding pinion
The damaged barrel teeth and winding pinion
Showing the excess play.
Showing the excess play.
Showing the excess play.
Showing the excess play.

Responses