• 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.

Need advice for upgrading a slave clock setup

Gary Myers

NAWCC Member
Oct 14, 2015
34
5
8
I had the very unique opportunity of dismantling a International Time Recording master clock setup and 15+ slaves from a 1930's seminary here north of Seattle . Two of the slave clocks are double sided that were suspended from the ceiling, a bear to dismantle from such a height. The master is a 5 ft tall clock that we had to break into because we had no key and it was locked, long story but a happy ending..

The seminary is being restored in a six month restoration project. The curator wants the slave clocks re-installed and running but they won't be under control of the original master clock, they will run standalone. The 24v wiring will be tore out so there will be not wiring between the slaves.The master clock is up in the air whether it will go back into the seminary or be sold off.

My partner who volunteered me to help suggested some sort of atomic movement setup to correct the time in place of the old 24v pulse correction movement. He took a modern generic atomic clock to different parts of the building to verify signal strength. He found no issues of running these clocks off radio signals.

The question is what can we dive this clock that will drive these big hands, also keep minimal modifications to the original? We would like to use a radio signal for correction if possible.

We have members who have salve clocks that use a DC driver from Ken's Clock Clinic. That good for driving a couple of slaves connected together but driving 15 separate standalone clocks require a different approach.

Any help or suggestions would be much appreciated.

Thanks in advance!
Gary Myers
Chapter 50 Puget Sound WA, NAWCC


ITR_Double.jpg ITR_Wall.jpg ITR_Mvt.jpg IRT_Label.jpg St Edwards Clocks5.jpg St Edwards Clocks4.jpg
 

Tim Orr

National Membership Chair
Director
NAWCC Fellow
NAWCC Member
Sep 27, 2008
1,422
245
63
Boulder CO
Country
Region
Good evening, Gary!

Important to think about: Budget constraints have caused the National Institute of Standards and Technology to propose shutting down its "radio-controlled" (or, as some say, "atomic") clock broadcasting services. If that happens, all of these commonly available radio-controlled clocks will cease to deliver accurate time.

I have been advocating that NAWCC members petition their representatives and senators, and there is even a petition to the White House to keep this service in place.

Here's a link to that discussion: WWV Losing funding? What about our 'radio controlled watches and clocks?

There is, at present, no readily available substitute. If the service continues, there are some of these quartz movements that can support large hands, and when carefully balanced, it is sometimes amazing how small a movement can be successful. GPS-sourced time might work, but I am not aware of any movements or clock systems that would work for you.

If I understand correctly, you do not want a system that relies on physical wiring from a master to the slaves.

I will also look up a couple of possible suppliers for you that might have some solutions. I believe one system uses individual movements that are synchronized via a central clock and Wi-Fi. I need to review that.

Will respond as soon as I can.

Best regards!

Tim Orr
 

Gary Myers

NAWCC Member
Oct 14, 2015
34
5
8
Good evening Tim,

Thank you for the links! I will take a look and make some inquires. The wireless clock system America Time has looks interesting. I have to ask the curator what our budget limit is. Guess we should have asked for that up front.

Hard to believe that NIST would eliminate WWV. I know folks, radio astronomers who use their frequency for monitoring propagation of the earth's ionosphere for sunspot activity and gama ray bursts from the universe. Even NASA might be chiming in on that one.

There are some folks who've successfully corrected quartz movements using GPS 1PPS (pulse per second) signals. I have to find the links but quartz might be worth looking into as well.

Thanks again for your suggestions.

Cheers!

Gary Myers
 

flynwill

NAWCC Member
Feb 1, 2007
1,029
10
38
Rolling Hills Estates, CA
flynwill.com
Country
Region
Indeed it would be sad if they shutdown WWV.

There are alternatives: GPS modules are now typically $20-30 and can provide extremely accurate time as long as they can receive the satellite signals.

If there is internet connectivity, then computer clocks synchronized from the Web can also provide sub-second accuracy.
 

sundy58

Registered User
Aug 23, 2014
61
1
8
Donna, TX
Country
Region
Any new clock you get will not be as pretty as the originals.

I always try discourage people from going from a wired system to a wireless system. The wireless systems have many more places for problems than a wired system.

I have access to impulse movements to upgrade your existing clocks. We can rebush the hands and they will look original.

We also have clock systems available just like other clock manufacturers. Our website is Midwest-Time.com
 

fdew

Registered User
Jul 12, 2007
235
4
18
Please reconsider not running 24 volt wiring. Being low voltage and low current it dosn't need conduit or boxes. You can run telephone wire or CAT5 or most anything. These IBM movements will run forever. Maintenance will be ZERO.
 
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Tim Orr

National Membership Chair
Director
NAWCC Fellow
NAWCC Member
Sep 27, 2008
1,422
245
63
Boulder CO
Country
Region
The 24v wiring will be tore out so there will be not wiring between the slaves.
Good afternoon, all!

The point in the original post is that the wiring is going to be torn out. Can it be preserved? I don't know.

Some of us here in Colorado worked on a Hahl Pneumatic system in a courthouse in Greeley. There, some of the pneumatic plumbing had been irrevocably destroyed over the years, and the county was not going to invest in having new plumbing put through the walls and floors. The only way to restore the timekeeping of some of the clocks was to go with new, locally powered movements (radio-controlled quartz). Also, of course, bellows and diaphragms for old Hahl movements are extremely hard to get.

Neither ideal nor historically accurate, but sometimes, that's the way you have to go. If the wiring's gone, you may have an uphill battle trying to get someone to install new.

Best regards!

Tim Orr
 

Toughtool

Newbie
Aug 12, 2016
244
36
28
Panama City, FL
Country
Those are beautiful secondaries.

This project is probably over now but for future reference there is an economical option available to get accurate time to secondaries wirelessly. If you can get 24 volts to the secondaries,(or mains) you could install my ESP8266 NodeMCU master clock on each location of the secondaries. This processor accesses the local wireless LAN to get the correct time from the National Institute of Standards and Technology (NIST), to keep the secondaries on time without a mechanical master clock connected. I did this in a gift to my son-in-law. mounted the master clock inside the wood box the IBM secondary was mounted on. This one used a plugin wallwart to provide the power to the master clock and the secondary. It worked quite well. Here is the link to the article: Development:“A Computer Based Master for ITR & IBM Minute Impulse Secondary Clock Movements”
 

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