Conical Pendulum Clocks
have continuous motion escapements. They don't tick. I got interested in them after seeing wonderful wooden-geared clocks
. These clocks tend to be based on John Harrison's grasshopper escapement
, and though the grasshopper is famously low-friction, builders still have trouble making them work. Even if every gear tooth is painstakingly sanded smooth, the clocks will need to power past the roughest spot.
I believe that continuous-motion escapements like conical pendulums are ideal for wooden gear clocks. When the gears stick, the pendulum will press against the back side
of the horizontal arm, unsticking them. Has anybody made a conical pendulum clock with wooden gears?
Note the difference between this escapement and the flyball telescope clock drives
I wrote about in my earlier post: https://plus.google.com/102702523678372583669/posts/ap8RiRKkdNz
The conical pendulum pendulum here will keep good time regardless of the pendulum's swing, provided that it is "reasonable small." The flyball telescope drives, though, depend on braking devices to keep the pendulum's height at a specified large angle, around 45°.
The horizontal gearing shown here is similar to that in the Briggs Rotary Clock
: Briggs Rotary
It (correctly) has the small angle used in clocks made by Farcot
: The Paris Exhibition Clock by E. Farcot
Here are photos from a discussion post which show how a contrate wheel (crown wheel) attaches the horizontal arm to the vertical movement: http://mb.nawcc.org/showthread.php?20858-Post-Your-Farcot-Clocks-Here&p=237589&viewfull=1#post237589
. I saw another which accomplished the same thing with a worm gear.
Ken Kuo made this video. Many other escapement simulations are on his YouTube channel, including some ones I've never seen before: https://www.youtube.com/channel/UC2h07cGBpJs8bF3OkgtJICg