• 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.

Gents Pulsynetic C7, digital seconds

caldirun

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Oct 9, 2017
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I have just restored a Gents Pulsynetic C7 and added digital seconds display plus illuminated dial, maybe not the correct way to go but it is an electric clock so update the electrics (both can be turned off and it looks original)
What do you think?

Dial.jpg Seconds.jpg
 

caldirun

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Oct 9, 2017
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Nice idea
How are the seconds synchronized to the movement?
An inductive proximity switch sends a pulse to the digital counter at the left and right pendulum swing points using an aluminium activator mounted on the back of the pendulum crutch.
This method adds only the very small inductive force between the activator and switch, it changed the rate by about one second/day (as the rate increased and I had to drop the bob to compensate I think the 1 gr of the actuator lifted the centre of gravity of the pendulum and swamped the inductive component)
The counter is reset every 60 seconds by a pair of contacts that close due to the action of the one minute impulse wheel attached to the ratchet wheel on the slave clock.
 

Edwardo

Registered User
Jun 18, 2006
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Melbourne Australia
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Nice work!
Have you thought about creating an inverting output to drive modified quartz movements as silent slaves?
I did something similar for a customer years ago
I took the seconds from the bob using two proximity switches driving relays to start with, but ended up using photo interrupters
and fitting a small piece of black card to the bottom of the pendulum adjustment nut thread
 

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