Repairing a broken tooth

Repairing a broken tooth on the hour wheel of a Longcase clock
All this damage was caused because of a badly made rack tail spring, in fact there was no spring in it at all!
Consequentially when the clock failed to strike the rack tail jammed against the snail causing the clock to stop, it was when the owner moved the minute hand ( WITH CONSIDERABLE FORCE BY THE LOOK OF IT!!) to set the time that the damage was caused.


The broken tooth on the hour wheel

The bent wheel stud

The bent wheel post

Needle files are used to cut the slot for the new tooth

The new tooth ready to be soft soldered in place
The  tooth is then filed to the same profile as the original tooth 

This picture shows the  method I use to remove  surplus brass from the new tooth without scratching the original wheel–it’s simply a piece of film placed over the work and filed through

The new tooth just visible after polishing out

The badly made rack tail, the cause of all the trouble!!
If you would like to see how to make a new one CLICK HERE

Side view of rack tail showing the thickness of the brass- far to thick and unable to move away from the snail when the clock failed to strike 

With the tooth repaired and the new rack tail fitted
the clock is now ready to be returned to the customer