David Walter
250
Janvier
Yes, you are correct, I forgot about Toulouse clock, I have a photo of it somewhere, if you would like it posted let me know and I will find it.
I had heard unconfirmed rumors that the Breguet belonging to The Queen had running problems at one time, my understanding is that it is now running fine,
I have been to the Patek museum 3 times in the hope of seeing their Double pendulum clock, each time I arrived the museum was
'closed for exceptional cirmcumstances" so I still haven't seen it or any other double pendulum clock for that matter, my entire information base is sourced
from the few photo's in The Art of Breguet by George Daniels.
I have had no running problems even though the walls in my place are not very stable, to achieve Resonance and run successfully the pendulums need to
be close to the same rate at the beginning.
I designed a completely different suspension to the large plate used by Breguet. Breguet used a large brass plate upon which the pendulums and the
movements are mounted, this plate which is not rigidly mounted to the case transmits energy from one pendulum to the other via the flexing of the entire plate thus
permitting resonance to take place.
There is much loss of energy due to the damping effect of the large plate.
The suspension I designed is a heavy support holding the two suspensions fitted into a common frame and set in gimbals, this "loose suspension" is
exactly the opposite of what is usually demanded for a high precision regulator where the most rigid and stable suspension support is a fundamental requirement.
This is the suspension I have created.
David
Many thanks...
By: nickd : April 25th, 2010-08:15
I wish I'd been there to see them. I'd love to see the escapement in Philippe Wurtz's Gramat (the long one). He impulses the suspension spring, and it's a very tempting concept. Be fascinating to see how well it works and if he overcomes all the issues it...
Thanks very much!
By: amerix : April 25th, 2010-10:49
All of these are beautiful and gorgeous, but I am wondering how many of them can approach the accuracy under half-way normal living conditions of a true pendulum clock - OK a photo of one of these is there. What about the Beat Haldimann Resonance - am ver...
Double Pendulum clock
By: David Walter : April 26th, 2010-09:41
I am not aware that Beat has posted any info on his resonance clock, however I have almost completed by version of the Breguet No.3671 which is the famous double pendulum clock in The Queens collection. I have had it running since January while I am finis...
Thanks for the info...
By: DonCorson : April 26th, 2010-10:06
Thanks for the info David. I am also not aware of any info about Beat's double pendulum, but I have never really asked as my interest is more on his resonant double tourbillon. He told me that for that watch the resonant effect is much more than he expect...
Wow
By: Timertom : April 27th, 2010-09:09
Hello David, Thats some mighty impressive data you've just posted regarding your clock. Did you make this accurate a clock completely by yourself? If possible could we please learn some more about or maybe see some photos of your clock. Do you know how ma...
Clockmaking
By: David Walter : April 27th, 2010-14:43
I make every component in the clock except for the jewels used in the train, I even cut the pallet jewels from Sapphire block. I believe there has only been 11 Double pendulum clocks ever made A.L.Breguet made 3 Double pendulum clocks, No.3671 for King Ge...
Very detailed work
By: paul.loatman : April 27th, 2010-15:40
David, I don't think you showed me the picture of the pallet before. It shows just the level of detail that has to be considered for every component. Very impressive even in it's unfinished stages, i like those hands as well, they go very well with the di...
Janvier
By: nickd : April 27th, 2010-22:58
Hi David, Some sources say that Janvier built three resonance clocks: two wall clocks, one now in the Patek museum, one belonging to Journe, and a one in the Musée Paul Dupuy in Toulouse, though I don't know anything about this one. I took part in a tour ...
Janvier
By: David Walter : April 28th, 2010-10:40
Yes, you are correct, I forgot about Toulouse clock, I have a photo of it somewhere, if you would like it posted let me know and I will find it. I had heard unconfirmed rumors that the Breguet belonging to The Queen had running problems at one time, my un...
Suspension and escapement
By: nickd : April 28th, 2010-14:02
Hi David, Fascinating idea for the suspension - I need to mull it over and see if I understand it. The escapement also looks interesting. Does the screw on the actuating arm adjust the locking or depth of engagement or...? The impulse seems to be happenin...
Pin Wheel escapement
By: David Walter : April 29th, 2010-09:31
Hi Nick, I am always happy to answer good questions. This escapement is unusual in that the pallets are fitted directly to the suspension spring avoiding losses via a crutch, the impulse is given directly to the pendulum. The set screw on the long pallet ...
Microset
By: nickd : April 27th, 2010-13:31
The timer is the Microset from Bryan Mumford. All sorts of lovely sensors plus the software. A serious tool, and a serious way to spend money once you start thinking of all the options www.bmumford.com >> and 1.0sec/year!!! Welcome to the world of precisi...
Measuring timekeeping
By: David Walter : April 27th, 2010-13:59
The program and the machine to collect the data is a MicroSet, it is manufactured by Bryan Mumford in Santa Barbara, California. It is available to anyone who has a need to measure the rate on any clock. For this particular reading reading I used two Micr...
Fantastic clocks David
By: Timertom : April 29th, 2010-10:52
David, The detail pictures of your clock show just how much skill, time and effort must have gone into making such beautiful timekeepers. The Breguet style hands really go well with the clock. The plates are superbly finished, as are each bridge and part ...
