Help Identifying this Hipp toggle Electromagnetic clock

[Chris von KlempererParticipant @chrisvonklemperer42187]

Hi

I inherited an electromagnetic clock from my Grandfather in the mid 2000s when his wife died. The clock had not worked for ~15 years and had suffered in transit to South Africa. I replaced the pendulum suspension and with new batteries it ran intermittently for a year or two. It hasn't worked for the last 10 years and I really want to get it running again.

The attached photographs show the Hipp type toggle which I believe is a "Scott Intermittent contact(?) design. My grandfather built the clock in the early 1980s, and was a Model Engineer fan, so I suspect it may have been to one of the magazines designs or a partial kit. I am looking for some documentation and / or drawings which could help get it set up correctly.

I'll add some photographs of the full clock later today.

Thanks Chris

[Chris von KlempererParticipant @chrisvonklemperer42187]

[Chris von KlempererParticipant @chrisvonklemperer42187]

[Neil WyattModerator @neilwyatt]

Hello Chris,

Afraid I don't recognise it, but I'm sure someone who can will be along in due course.

Neil

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Chris von Klemperer on 04/10/2019 11:31:00:

[ … ]

The attached photographs show the Hipp type toggle which I believe is a "Scott Intermittent contact(?) design.

.

Chris,

Sorry to be pedantic, but those terms are contradictory

Could you please look at this article, to see if you recognise basics of your mechanism:

**LINK**

https://www.model-engineer.co.uk/wp-content/uploads/sites/4/documents/jubilee-clock-1.pdf

MichaelG.

[Chris von KlempererParticipant @chrisvonklemperer42187]

@ MichaelG

Thank you, I had seen the link you suggest and an extended version of the same document as well. I hope to read through them over the weekend. I am not experienced with the terminology, but recognise that the design is not the traditional Hipp toggle design. I struggled to identify the correct description of the mechanism on the clock I have.

The image below is the mechanism for switching on the electromagnet. (Correctly orientated this time). I hope that helps.

Chris

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[Michael GilliganParticipant @michaelgilligan61133]

Chris

For clarity … here is a good description of the Hipp Toggle : **LINK**

http://www.hvtesla.com/masters/po36_toggle.html

The normal Scott arrangement perhaps has more in common with the Synchronome, and the Gents’ Pul-syn-etic

… different details, but the same underlying principle.

Westbury seems to have devised a hybrid

MichaelG.

Edited By Michael Gilligan on 04/10/2019 16:25:15

[Michael GilliganParticipant @michaelgilligan61133]

My apologies, Chris … The Scott arrangement is conceptually closer to Hipp’s toggle than I remembered

This is a nice summary description:

[quote]

Herbert Scott (1865-1943) was born in Bradford, Yorkshire, England. In 1902 he secured a patent for the mechanism used in this clock. A variation on Hipp's toggle, there are V notches at the tips of all escape wheel teeth, and a pivoted, L shaped trailer at the top of the pendulum rod. Following impulse, the trailer gathers the escape wheel teeth one at a time, thereby steadily advancing the hands. The pendulum amplitude eventually falls to a point where the trailer will no longer gather another tooth, and comes to rest in the V notch at a tooth tip. A projection on the trailer now is in line with the contact, and closes the circuit, thereby energizing the magnet, and providing impulse to the pendulum.

[/quote]

Ref. **LINK**

https://clockdoc.org/default.aspx?aid=11219

.

MichaelG.

.

For my penance, here is Scott’s patent:

https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=770323A&KC=A&FT=D&ND=&date=19040920&DB=&locale=

Edited By Michael Gilligan on 04/10/2019 20:12:15

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