• Important Executive Director Announcement from the NAWCC

    The NAWCC Board of Directors is pleased to announce that Mr. Rory McEvoy has been named Executive Director of the NAWCC. Rory is an internationally renowned horological scholar and comes to the NAWCC with strong credentials that solidly align with our education, fundraising, and membership growth objectives. He has a postgraduate degree in the conservation and restoration of antique clocks from West Dean College, and throughout his career, he has had the opportunity to handle some of the world’s most important horological artifacts, including longitude timekeepers by Harrison, Kendall, and Mudge.

    Rory formerly worked as Curator of Horology at the Royal Observatory, Greenwich, where his role included day-to-day management of research and digitization projects, writing, public speaking, conservation, convening conferences, exhibition work, and development of acquisition/disposal and collection care policies. In addition, he has worked as a horological specialist at Bonhams in London, where he cataloged and handled many rare timepieces and built important relationships with collectors, buyers, and sellers. Most recently, Rory has used his talents to share his love of horology at the university level by teaching horological theory, history, and the practical repair and making of clocks and watches at Birmingham City University.

    Rory is a British citizen and currently resides in the UK. Pre-COVID-19, Rory and his wife, Kaai, visited HQ in Columbia, Pennsylvania, where they met with staff, spent time in the Museum and Library & Research Center, and toured the area. Rory and Kaai will be relocating to the area as soon as the immigration challenges and travel restrictions due to COVID-19 permit.

    Some of you may already be familiar with Rory as he is also a well-known author and lecturer. His recent publications include the book Harrison Decoded: Towards a Perfect Pendulum Clock, which he edited with Jonathan Betts, and the article “George Graham and the Orrery” in the journal Nuncius.

    Until Rory’s relocation to the United States is complete, he will be working closely with an on-boarding team assembled by the NAWCC Board of Directors to introduce him to the opportunities and challenges before us and to ensure a smooth transition. Rory will be participating in strategic and financial planning immediately, which will allow him to hit the ground running when he arrives in Columbia

    You can read more about Rory McEvoy and this exciting announcement in the upcoming March/April issue of the Watch & Clock Bulletin.

    Please join the entire Board and staff in welcoming Rory to the NAWCC community.

Re assembly Regula 25

dpedrosa

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Nov 28, 2020
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After quite a while following this great forum and looking through many posts, I need to ask a question and I hope someone may be able to help me. I started to repair a cuckoo clock I got from a local flea market here in Germany and was quite successful getting back to work as for the clock itself. However, I am struggling putting together the part controlling for the cuckoo and the music (the left side seen from the back). I saw that the „rod“ between the wheel and the gathering pallet was not properly aligned, so I turned it slightly. Yet, whenever I re-assemble the clockwork, it gets stuck, because this „rod“ collides with the strike lever on the lower part. I'm not sure how helpful a picture is so I will not attach anything so far but please let me know what figures could be helpful to you.


All the best,
David
 

dpedrosa

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Nov 28, 2020
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Thanks for the quick reply. Let's start with some pictures:

On the second one you can see how the pin at the striking lever is in the way of the „rod“. This prevents that the gathering pallet rotates sufficently.

IMG_2092.JPG IMG_2096.JPG
 

roughbarked

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The lever that the bird attaches to is on the wrong side of the gathering pallet?
Don't need to open the clock. Genty pry both the bearing plates apart until the lever can slip forward enough to pit back the other side of the gathering pallet. Care to not lose any turns off the spring.
 

dpedrosa

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Nov 28, 2020
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I'm really sorry but just to get things straight. Are you referring to this part?

IMG_2096mod.JPG
 

roughbarked

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Right. Well your description is confusing me. Discard anything I said above.
The section you have outlined in red needs to push the arm in and out to operate the door opening and bird. This lever should drop into a slot on a cam on the wheel it interacts with in order to activate it and lift away to complete the operation.
There should be little problem here.
Your first photo shows the clock without the rack and hour wheel.
The gathering pallet that lifts the rack one strike per rack tooth is the part that needs to be synchronised.
However, it does appear to me that the lifting lever that lifts the rack hook seems to have the rack hook end caught behind the plate. Its spring is also detached.
You'll need to take the clip off the other end of the shaft which is around on the back plate and remove the lever then install it correctly.
 

dpedrosa

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Nov 28, 2020
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Thank you for the effort. I'm sorry, I may have been misleading. I re assembled everything so that the setup is clearer. The problem is that the mechanism gets stuck and I'm no quite sure where but I guess it is the part that connects the gathering pallet and the wheel. It's also outlined in red above and in the link you can find a video, if that helps. I don't know why both parts collide and I've tried to re assemble it in all kinds of ways without success. Maybe you have another idea?

video: FullSizeRender.mov
 

JimmyOz

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I to am confused, however rather than asking a lot of questions I looked into my junk pile and found the same movement.
I have taken 2 photos of the setup with the bird post in the closed position, then with the bird post in the open position.
Try to get your movement set up like the 1st two photos, then let the rake fall as in the 2nd two photos. If it does not work use the photos to arrow what you think is not moving correctly and post them.
CIMG1055.JPG CIMG1056.JPG
CIMG1057.JPG CIMG1058.JPG
 

shutterbug

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Also check on the back of the movement for binding of the two lift levers that operate the bellows. They can get caught together and stop everything.
 

dpedrosa

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Nov 28, 2020
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Alright, so I checked everything you suggested and lubricated the lever. I'm not yet mounting the parts at the back but I re-assambled everything in front so that to me it looks like what JimmyOz suggested. It is stuck and the rack doesn't work properly (see the video). In my opinion it appears to be the small rod/part connected to the wheel that drives the gathering pallet. It's not so easy to show as these parts are buried under some other parts and my fingers but here are two images (one of yesterday and the new one marking the parts in blue) and I also took a video how it doesn't move properly, but it is rather big so I attach it on this link: videoCuckoo.mp4

IMG_2096mod.JPG IMG_2096mod2.JPG
 

JimmyOz

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It looks like the cam that lifts the rake count lever is not set in the right position. take the cam off (it is a friction fit) set the front of the movement up like in my 2nd photo and replace the cam as in the same photo, that should get it to work.
Love video's :)
 

dpedrosa

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Nov 28, 2020
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That is already very helpful as indeed it was not aligned properly. However, it is still not working and after disassembling it again and re-assembling it (holidays are great for these kind of things), I think I realized what roughbarked were saying with „his lever should drop into a slot on a cam on the wheel it interacts with in order to activate it and lift away to complete the operation.“. it actually never drops completely into the slot, unless you put a lot of pressure on the lever. I cannot see any bending or other damage, which is somehow surprising. Has anyone had this kind of problem before?
 

JimmyOz

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Do not force anything you will only end up bending something. I will take the back plate off this junk movement tomorrow and take a photo of how it should look as I think you may have something in the wrong position.
 

shutterbug

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I think your bird perch (the part with the U bend) is on the wrong side of the lever. It should swing open, but it's not able to in that position. Pull the bottom of the perch wire out of its holder and put it on the other side. Reattach and see how that works. I can't see it clearly, but the perch has to open all the way before the train will be free.
 

JimmyOz

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I took the back off the junk movement and here are a few photos for you to look at and compare to your movement. I took out the wheels that don't do anything so you have a clear view of the levers inside the movement.
CIMG1062.jpg CIMG1069.jpg CIMG1071.jpg CIMG1072.jpg
I just left the bird post attached, however moved it out of the way of the levers as this is the last thing you need to put in after the movement is all together.

Also and just to make sure you understand how it works, the pin is NOT in the hook when the bird has finished it call, it IS in the hook when it is calling, I say this as reading your post #18, it seems you think it is the other way round?

Also take the cam off the front that lifts the rack as this also needs to go on at the end when it is synced in with double flanged lever that is on the same arbour but inside the movement ( this is where I suspect your issue is).
 
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dpedrosa

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Nov 28, 2020
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After a few days of working on the clockwork I now solved the issue thanks to your help. The problem was that the lever was bent so that it never moved enough to make an entire turn possible (only when applying pressure). So after bending it back, it now works and everything works fine. Thanks to everyone for your help, especially you JimmyOz for your effort disassembling the old movement.
 
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JimmyOz

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Glad to hear it is all good now, one other good thing is that the next one will be easy. :clap:
 

dpedrosa

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Nov 28, 2020
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Just a quick follow-up question. After assembling the clockwork and putting it back into the case, I have been trying to let it run. Without a pendulum and sufficient weight (500g) it works but whenever I attach the pendulum it stops after a minute or so. What would be a reasonable weight in your opinion? Unfortunately the person who sold it did not have them.
 

Vernon

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One source shows for each weight is 320 grams. Make sure that you have it in beat with the pendulum on.
 

JimmyOz

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One way to see if it is a beat issue is to tilt the case on the wall till you hear a tick-tock, then bend the leader (the thing the pendulum hangs on) toward the high side, adjust the case and do it again till it is right. If you can't find a tick it may be another issue.
 

dpedrosa

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Nov 28, 2020
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I think it‘s actually a beat issue. If I tilt the case to one side it needs a bigger angle to hear a tick than to the other side. I have tried 320g and even more and it doesn’t work. Bending did not really do too much. But just to make sure we are in the same page, I bend the leader to the side where the tick is happening “too early”, right?
 
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