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Hermle Keywound Westminster Non-Pendulum Movement

 Winding the clock

Please wind your clock fully every 7 days for optimum performance (the clock will actually run about 7 days on one winding). To wind the clock use the enclosed key. Turn key clockwise in all three winders until it stops. The center winder is for the timekeeping, the right winder is for the quarter-hour chime, and the left winder is for the hour strike. If the right hand winder is not wound, eventually the left will not function.

hermle westminster chime shut-off lever

chime shut-off lever

4/4 Westminster Chime Movement

Your clock chimes the Westminster melody every 15 minutes. The chime shut-off is located inside the back of the clock case at the right side of the movement usually with a red plastic bushing.

Lever up = chime

Lever down = silent



Setting the clock

The minute hand (long hand) may be moved clockwise or counterclockwise to set the clock to the correct time. Never turn the hour (short) hand, it moves automatically. After two hours the chimes will be automatically synchronized. It is best to turn off the chimes using the chime lever when setting the clock time more than a quarter hour.

hermle clock speed adjustment

Clockwise = slower
Counterclockwise = faster

Regulating the clock speed

The screw at the very top right is turned with a jeweler’s flathead screwdriver. Make only a small adjustment each time (about 1/16 of a turn).

Clockwise = slower

Counterclockwise = faster

To make the clock go slower or faster, turn the regulating screw that is shown in the upper right of picture backwards (counterclockwise)
If your clock is FAST, To make clock go slower: turn screw clockwise.




Thank you for your amazing service with our Hermle Clock

Hi Robert –

Thank you for your amazing service.

Jeri A. ,
San Jose, CA

Hermle Clocks

9 responses on Hermle Keywound Westminster Non-Pendulum Movement

    1. The movement in this clock cannot be adjusted to play the hour without the quarter-hour chime. This is true for current model mechanical movements of all brands.

  1. The hour chime on my clock is 4 hours ahead of the actual time (chimes 5 times at 1:00). How can I synchronize the chimes with the time?

    1. Hello Mike,
      This is a quick way to fix that incorrect hour count on your mechanical mantel clock chimes the wrong hour.
      For example, let’s say it is really 2:00 and your clock chimes 5 times to count the hour.
      Your mantel clock dial says it is one time but the mantel clock chimes another hour?
      There is a simple fix for this issue if your mantel clock is striking the wrong hour.
      1) When your mantel clock strikes the next hour, count the number of strikes.
      2) Move only the shorter hour hand to the number on the dial that you just counted when the clock chimed.
      (If your hour hand doesn’t want to move, be careful as not to bend it. It is held on only by friction and if never moved before, it may be frozen on the shaft**)
      the clock chime is now in sync with the hour count…but the time on the dial is now wrong.
      3) Set the time on the mantel clock using the minute hand to the correct time where you are located.
      Now your clock is chiming properly indicating the correct hour.
      If mantel clocks are allowed to wind down and stop, this may happen.
      During the first hour after completing this procedure, the quarter-hour chimes may do strange sequences. Don’t worry, as it should correct itself in about an hour of operation.
      **Your hour hand will probably move somewhat easily, however, if it feels stuck try the following. Instead of trying to move the hour hand with a finger at the end of the hand, pinch the hand as close as you can get to the shaft that holds the hand on. Try to move it back and forth without bending the hand. It should free up so you may easily move it. Never spray in lubricants like WD40 in this area.

  2. Thank you for your expertise.
    I have a Seth Thomas (A403-001) 79-03 that is slow around 5 minutes every 12hrs.
    Do you have an advise, if any?

  3. I purchased a wall clock it is a Long Boston Round I’m not sure of the model it has these numbers on the back 802-0587 and C4137M1200 it is made by Wuersch,Mass. It does not have an operating manual, could help me out with this?

  4. my tempus fugit mantel clock by Bulove strkies ones 2 minutes before hour and then 2 minutes before first quater. Why is that?

We are only able to advise on our brands which are newer Howard Miller, Hermle Clocks, Bulova and Seiko Clocks made since 1998.
We are unable to comment on older or antique clocks or clocks we have never seen.
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