The challenge of this clock is to reduce the plates to an absolute minimum and make the clock appear to be “all gears” - so here’s what I did. I know lots of others have done the same but I wanted to do one too.
The “plates” for this clock is one 1/2” by 1/2” steel square tubing. The clock won’t be all wood but the wheels and pinions are and they are about all that you’ll see.
The tooth form is involute and the Great Wheel has 60 teeth and makes one revolution every 12 hours
The second wheel has a 5 leaf pinion and has 50 teeth. This is the hour wheel.
The third wheel has 42 teeth and a 5 leaf pinion. It turns once each 6 minutes
The escape wheel is a 30 tooth recoil type with a 7 leaf pinion. The escape wheel will turn once per minute.
The recoil pallets embrace 7 teeth and have 30º at impulse angle
The Great wheel has a simple rachet drum that you can either turn by hand or remove the weight and wind the cord on the drum.
The second wheel or hour wheel sits in front of the Great Wheel
The third wheel is once again in front of the second wheel.
The escape sits in front of the third wheel.
The pendulum is the foremost part of the clock.
The final appearance from the front shows all large gears and no pinions are readily visible
The profile is a little disconcerting as it appears that the clock is leaning off the wall. With the driving weight near the back, it sits comfortably on the wall.
The Great Wheel turns once in 12 hours and the second wheel once in an hour so in minimalist fashion I used two faces. The dial face is simply a 12 spoke “pulley” which divides up the face appropriately.
The upper face has a canon tube that allows it to use the minute wheel arbor as an arbor for the face
The hands don’t contrast well and will likely get replaced along the way
The profile of the clock shows the gear set all nicely stacked including the the minute and hour faces, it doesn't appear to "lean" as it does with only the gears in place.