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A David Walter Double Pendulum Clock – Part 10, A Milestone is Reached !
A David Walter Double Pendulum Clock
– Part 10, A Milestone is Reached - The Equation Movement Finished
Every week we are seeing more of David's work on his new double pendulum clock.
A milestone has been reached, the first movement, the equation movement is now finished.
For those of you who didn't see the earlier installments of this series, you can catch up by looking here:
- Installment 1 – Introduction and Cutting out the plates
- Installment 2 – Making the Barrel
- Installment 3 – The Suspension
- Installment 4 – Invar Pendulum Parts
- Installment 5 – Making the Wheels
- Installment 6 – Completing the Barrels, Cutting some Pinions
- Installment 7 – The Escape Wheels
- Installment 8 – The Mean/Solar Movement Main Train
- Installment 9 – The Equation Wheel
We can hear Davids elation in reaching this milestone. Let me simply quote his email to me:
“Hi Don,
Sorry only a few pics, I was buried in the making.
At last ! The Equation is complete !
Reaching this point is a milestone in the project, I have the entire
equation work finished.
Part of what felt like it was taking longer than expected is that this
time I undertook the finishing as I progressed which includes polishing
the brasswork, polishing the foot and head of each screw, shaping,
beveling and matting the cocks, as a special for this clock I have
blued the steel springs and fitted steel locating pins with polished
heads to the springs and polished screw heads for the steel springs and
blued screws for the brass cocks.
This time I am finishing as I go, I know I may well have to apply some
final finishing once all is done, but at least I wont have to sit down
at the end and polish 700 + parts and screws one after !
I have also designed a new manner in which the year wheel is indexed
which is less complicated and I feel a little more positive in action.
Not only is the equation work complete but the Thermometer arrived today.
This clock will have a thermometer inside the case.
Now I need a break, I feel quite worn out at the moment.
Best regards,
David”
A David Walter Double Pendulum Clock – Part 10, A Milestone is Reached !
A David Walter Double Pendulum Clock – Part 10, A Milestone is Reached - The Equation Movement Finished Every week we are seeing more of David's work on his new double pendulum clock. A milestone has been reached, the first movement, the equation movement...
One of the wheels is wonky...?
Is it my sherry or my eyes deceiving me? But one of those wheels is wonky and looks like an egg! The one on the left is not perfectly round ;) Just kidding...I'm messing with my own head. It must be the sweet sherry. This must be one of the most detailed ...
I highly recomend Dry Sherry........
The all will appear less wonky. That is the equation cam, sometimes called the kidney cam due to its shape. David
Is that a ruby tipped follower...
...on the equation kidney? I think it is. I have thought of trying that myself eventually, when I get a chance to make equation works someday. I see yet another "1st" has already been done by someone else. Not disappointed- it must have been a good idea i...
Yes it is......
a ruby rod, the end is slightly bull nosed as it must follow the cam at varying radii. On earlier clocks I had a long lever indexing the year wheel from the left hand side, this worked well but the long lever had more mass, the new version is much lighter...
How it works...
Hi Don, How it works is easy ! the thingy in the middle shoves the whatsit on the right which kicks the gizmo over then every now and again that lifts the whojaflippy that turns the gadget who waves an arm at the bull and the that shows the equation ! Dav...
The real story
The real story - how it works Hi Don, Explanation; I have attached a pic of the movt. upright as this is how it appears on the finished clock and it is somehow easier for me to explain if its the right way up. The wheel immediately above the cam wheel at ...
That makes sense
It's a bit difficult to make out all the details exactly from the picture, as zooming in on pins and such just gets blurry, but the explanation, coupled with what I can make out, and my knowledge of this type of equation mechanism from Daniel's books, esp...
David and Don, thank you from all of us
David, I know the making of watches and clocks is a huge task, and interrupting that work for photos and commentary adds to the effort. I hope it also provides a welcome distraction, or at least adds a sense of satisfaction that you (together, as Don too ...