Gilbert Jewelers Regulator #20 Runs Too Fast

Posted: Tue Feb 09, 2010 4:33 pm     Post subject: Gilbert Jewelers Regulator #20 Runs Too Fast

I have lowered the pendulum bob as low as I can which takes it to about 1/4 of inch from the bottom of the case and it still runs fast - over 1/2 hr per 24. I know the escapment is well worn and needs to be replaced.

1. Is there any other way of adjusting the mechanism to make the clock run slower?

2. Where can I find/purchase a replacement escapement?

Your input is greatly appreciated

Posted: Tue Feb 09, 2010 11:37 pm     Post subject:

You probably need a total re-bushing job if it is worn that much. Replacing the escapement would probably not solve your problem.

Posted: Thu Feb 18, 2010 3:30 am     Post subject: is the pendulum the original

Is the pendulum original to the clock, timing is by the center of osscillation. so a larger,or heavier pendulum or bob, would make for a longer pendulum to keep time.

You adjust the rate of time, by raising or lowering the bob, but the center of osscillation is what actually determines the length/rate association.

If your pendulum has a different center of osscillation, this would explain it not keeping time, within your case. sounds like your bob is too large.

Posted: Thu Feb 18, 2010 3:33 am     Post subject: or, you make have an escapement skipping

You could have a skipping escapement, if the bob is original, Skipping should be readuily visible. Check verge depthing, or look for a bent or damaged tooth causing a miss.

Posted: Thu Feb 18, 2010 3:50 am     Post subject: further inspect

too much slop in the wear plate for the crutch.

loose crutch at the verge/arbor.

low amplitude/swing on the pendulum.

wrong suspension spring (way too heavy)

all these would cause skipping.

Could be very dirty , worn movement, or loose mechanical fitting.