Author Topic: a mystery escapement I've never seen before-- and still haven't  (Read 5971 times)

Offline rus

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 Check out this web site http://www.kavalir.cz/clock/index.html.  In it the designer and builder of these rather handsome steel clocks says, "The peg escapement is so constructed that each peg gives four impulses for the pendulum. For that reason it is possible to use a half number of pegs than usual."
Now there are a good many pictures from all angles, and the pinwheel is clearly visible but I can't determine the shape or make up of the pallet.  Has anyone ever come across one of these clocks, or know of other source material about such an escapement?  It would be interesting to know and fun (maybe not so fun) to mess around with in cad and wood.

The site is worth visiting, just to see the elegant design of the clock as a whole and maybe one of you can decode the photographs and tell me what I missed.
Thanks
Rus
Rus

Offline mackerm

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Re: a mystery escapement I've never seen before-- and still haven't
« Reply #1 on: January 29, 2014, 03:11:43 PM »
5 years later...
Here is a version of the site where the pictures work: http://www.kavalir.cz/hodiny/en/gallery
and here is a web store with more photos:
http://www.chronoshop.cz/hodiny/kavalir-chrono-skeletove-kyvadlove-jednoruckove-hodiny

I only see two pallets, in the clock's center line, so I don't know how they could give four impulses to the pendulum.

Offline rus

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Re: a mystery escapement I've never seen before-- and still haven't
« Reply #2 on: January 30, 2014, 05:26:44 PM »
Five years later and I still don't see it.
Thanks for the new links with photos that weren't in the one I posted five years ago.  There is a profile photo that shows what I think are pallet pins arranged like a traditional pinwheel pallet -- one pin over the other but on the same post rather than two arms.  I've played with something like that and it can work but I'm still not able to understand four impulses -- still missing something.  Some things are meant to be mysteries
Thanks
Rus
Rus

Offline sipka

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Re: a mystery escapement I've never seen before-- and still haven't
« Reply #3 on: January 31, 2014, 03:50:14 AM »
There will be two escapement beneath it

Offline rus

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Re: a mystery escapement I've never seen before-- and still haven't
« Reply #4 on: January 31, 2014, 09:21:57 AM »
Sounds right.  I did a screen capture so I could enlarge the portion of the profile photo and can see two elements that could be anchors for the far points (right side of your drawing) that would match your drawing but really didn't see  them in the photo.  You are probably right.  You know I'm going to draw it if not build it.
thanks so much,
Rus
Rus