Hi Everyone,
Thank you Allan for your invitation to post & discuss my clock on this forum.
I have a brief description of the prototype clock on my web site at:
http://www.jim-haubert.com/id7.html
But here are a few better photos:
This clock is a prototype that I built for the purpose of trying ideas that I had been kicking around. I was/am hoping to market some type of precision clocks and I needed to learn where my time would be most productive.
There was plenty of opinion, but I was unable to find precise evaluations of many of the accepted practices. I.E statements were common that hard pivots had less friction than soft ones, but just HOW much less were the type of details I was looking for.
The lessons I have been learning have resulted in my designing the movement pictured below - still awaiting completion.
As I developed the prototype, an idea occurred to me to fix the great wheel firmly on it's arbor (rather than have it float) and wind the drum w/teeth cut into one of the flanges. I rigged up the prototype this way, but I don't have a photo handy. This method of winding shows up in the photo above.
The winding arbor is spring loaded to keep it from adding friction to the train. To wind, you just push the key/crank in to engage the gear w/the drum teeth and wind the weight up. Release the key/crank & the arbor pops back out of engagement.
I've never seen this method before or since but it allows the great wheel to be as concentric as possible to the arbor rather than 'kicked' off to the side by the action of a ratchet pawl on one side.
There are a number of other breaks I made w/tradition (that I feel are improvements) but I will just have to keep posting additions to this thread as I get time.
If there is enough interest, I promise to post more details w/photos explaining the entire process I have been going through.
But for now this is my start.
Best wishes to ya'll.
Sincerely,
Jim
Thank you Allan for your invitation to post & discuss my clock on this forum.

I have a brief description of the prototype clock on my web site at:
http://www.jim-haubert.com/id7.html
But here are a few better photos:



This clock is a prototype that I built for the purpose of trying ideas that I had been kicking around. I was/am hoping to market some type of precision clocks and I needed to learn where my time would be most productive.
There was plenty of opinion, but I was unable to find precise evaluations of many of the accepted practices. I.E statements were common that hard pivots had less friction than soft ones, but just HOW much less were the type of details I was looking for.
The lessons I have been learning have resulted in my designing the movement pictured below - still awaiting completion.

As I developed the prototype, an idea occurred to me to fix the great wheel firmly on it's arbor (rather than have it float) and wind the drum w/teeth cut into one of the flanges. I rigged up the prototype this way, but I don't have a photo handy. This method of winding shows up in the photo above.
The winding arbor is spring loaded to keep it from adding friction to the train. To wind, you just push the key/crank in to engage the gear w/the drum teeth and wind the weight up. Release the key/crank & the arbor pops back out of engagement.
I've never seen this method before or since but it allows the great wheel to be as concentric as possible to the arbor rather than 'kicked' off to the side by the action of a ratchet pawl on one side.
There are a number of other breaks I made w/tradition (that I feel are improvements) but I will just have to keep posting additions to this thread as I get time.
If there is enough interest, I promise to post more details w/photos explaining the entire process I have been going through.
But for now this is my start.
Best wishes to ya'll.
Sincerely,
Jim