Gustav Becker Mantle Clock Chime Train Not Operating Properly

[hambyl]

I have a Gustav Becker chime and strike miniature "tall case" clock made right before they changed their serial numbering system. While the case looks like it would take a longer pendulum, it uses the P14 length mantle clock pendulum
The works has been cleaned and the time and strike are working fine but the chime chain goes through the full 40 notes every 15 minutes.
If there a written description of how this particular chime train works or does anyone know how this particular chain works? There are two internal wheels that are intended to govern stopping the chimes. The one on the left has a narrow indent which does not stop the chimes and a long one which does. The one on the right has only one narrow intent which does not stop the chimes. Not knowing the works, I find it strange that there are only 3 indents that would stop the chimes rather than 4. Likewise. Likewise the chimes going more than 4 time before getting to the first indent. All of the levers on the front of the clock appear to be working properly. On the hour, the clock strikes after the chimes have gone through their 40 notes.

 

[disciple_dan]

What tune would that be playing? Would it be 10 notes on the 1st quarter up to 40 notes on the top of the hour?

Also, I can't get close-ups of the pictures anymore. Is that the new format of did the pics come from another source?

 

[wow]

40 notes on the hour is not right because there are only four hammers on the chime side. There should be 16 followed by the hour strike on the opposite side. This is a very complicated chime set-up. Can you make a video of it operating and let us see what is happening?

 

[hambyl]

I had a video but could not get it uploaded. I will shoot a couple, upload to YouTube and attach link. Photos were taken with iPhone and attached. I will take some closeups and answer specific questions. Thanks for help.

 

[hambyl]

I had a video but could not get it uploaded. I will shoot a couple, upload to YouTube and attach link. Photos were taken with iPhone and attached. I will take some closeups and answer specific questions. Thanks for help.

I could only get YouTube to load 1of the videos and am adding closer shots of the works.
A later post on problems with GB Chimes appears to be exactly my problem—the internal stop mechanism. He figured how to fix it but I was not able to. I assume it is between the plates in the area shown in the video but I Have been unable to identify it. With 1 being the lowest of the four notes, the chime sequence is: 24312342 (small indent in front wheel) 42311342432124 (small indent in back wheel) 312342423113424321 (long indent in front wheel which stops the chime train)
Note: this is 1 set of 20 notes followed by a second set of 20, but they hit the indents at 8, 22, and 40. I don’t understand what should happen at 1/4, 1/2, 3/4 and full hour.
The hour strike is triggered after the chimes on the hour as it should be.

 

[shutterbug]

It doesn't stop until the pin is in the long slot for some time. It needs to stop as soon as it enters any notch. If it's adjustable, you can just turn it to the start of the notch when it finally stops. Then it should work on all of them.

 

[hambyl]

Thanks Shutterbug. That got me part way there. As shown in the video, there are two disks with intents. The one closest to the front has a short and long indent. The disks don't seem designed to be moved. I tried to move the wheel to where the front part of the long indent was where the back was but it would not move. Then I noticed that when the small shaft on the lever dropped into the indent, the pin of the gear above had just passed. So I pushed in the opposite direction, it moved slightly and clicked into place. After that, when the when the pin drops into the indents on the front disk, it stops. That accounts for stops at three of the 15-minute intervals---any three, given where the hands are. That brings us to the indent on the disk nearest the back plate of the clock. I don't see anything to make the chime stop when that separate lever drops into the indent.
I will work this but just wanted to say thanks for starting me down the right path.
If anyone knows how that disk and lever nearest the back of the clock works let me know.
Also, If anyone knows the chime pattern for these clocks tell me as that will give me a clue as to how the read disk and lever work.

 

[shutterbug]

I'm assuming that that second disk controls the auto-sync function. It should engage at the 3/4 hour position, and stay there until the hour lift (which is higher than the others). So if the clock gets out of sync, it will self correct at the hour.

 

[hambyl]

I'm assuming that that second disk controls the auto-sync function. It should engage at the 3/4 hour position, and stay there until the hour lift (which is higher than the others). So if the clock gets out of sync, it will self correct at the hour.

Thanks shutterbug. It does control the 3/4 hour function. The same pin that catches the 1/4, 1/2 and hour also catches the indent on the rear disk once I moved it to where it would catch before the lever raised back up. Thus the chime mechanism is working correctly.
Because I did now know the full hour location (at the beginning of the long indent on the front wheel), I was not right about the sequence. It is (1 being the highest note and farthest rom the back plate): 1/4 hour 1234; 1/2 hour 3124 3213; 3/4 hour 1324 4213 1234; hour 3124 3213 1324 4231.
Posting lesson learned for iPhone users: Do not reduce the picture size when posting or transferring a photo from the iPhone. Doing so kept others from zooming in for more detail.
Thanks to all who provided help with this issue.

 

[shutterbug]