The Beall Clock Forum

General => Other escapements => Topic started by: robecq on April 13, 2010, 01:48:21 PM

Title: Flying Pendulum - photos
Post by: robecq on April 13, 2010, 01:48:21 PM
Hej all, newbie here,
Doesn't look these forums get much use ( apart from the Russian Viagra spam ) but anyway.

I'm trying to find some info on a flying pendulum. There are a couple of wooden clocks around and there was a Italian? wind up clock sold in the 70's I think. But I cannot find any information when this type of pendulum/escapement was invented. Any ideas?

I've manage to make one out of straws and paperclips tho.

Title: Re: Flying Pendulum - photos
Post by: jss on April 13, 2010, 05:36:36 PM

A few sites to look at may provide some answers

The original flying pendulum clock was invented, and patented, by Christian Clausen of Minneapolis, Minnesota in 1883. It has been called "the craziest clock in the world" due to the motion of the escapement. It was originally sold by the New Haven Clock Company (under the Jerome & Co. name) for about a year (1884-1885).

Title: Re: Flying Pendulum - photos
Post by: robecq on April 19, 2010, 04:03:31 AM
My drinking straw and cardboard clock!
Title: Re: Flying Pendulum - photos
Post by: Cedar on May 04, 2010, 06:38:53 PM

I have just uploaded a (not very good) video of the flying pendulum clock that I made last year.

I chose to use a flying pendumum as I was making the clock for a friend who did not want the constant tick-tock of my other clocks.  I used peg wheels as I was burned out of cutting gear teeth on the large wheel clock that I had just finished.

I really enjoyed working through the engineering mechanics of the flying pendulum to create something that was both pleasing to look at and kept reasonable time.  The key was to make the posts around which the pendulum cord winds to be as small a diameter as practical and the pendulum cord as long as possible.  To do this I hung the pendulum from the bottom of the clock rather than above as in the more "normal" design.  This allows almost twice the pendulum cord length to be used as it does not have to clear vertical "pendulum arbor".  I had no luck with the double post mechanism used in the Ignatz Flying Pendulum clock design which found to be very sensitive to tiny changes in the geometry.

I hope this helps.