Franz Hermie Mantel Clock Adjustment

Posted: Fri Jan 08, 2010 5:25 pm     Post subject: Franz Hermie Mantel Clock Adjustment

I have a Franz Hermie mechanism (150-80, 84) in a mantel clock which is running slow. Looking at the back of the mechanism, I can see the (+) and (-) engraved on the back plate, but see no adjustment screw. How is the adjustment made.

Posted: Fri Jan 08, 2010 10:15 pm     Post subject:

i think you have a balance wheel which ticks like a watch.
usually on top of the wheel is a pronged leg or legs which are friction tight. try gently moving the prong in the ness direction. Be careful not to break the wheel as a replacement will be more than taking it to a repair shop to adjust professionally!