Internet Horology Club 185
Beautiful Pinwheel

This topic can be found at:
https://ihc185.infopop.cc/eve/forums/a/tpc/f/9886029761/m/3641009212

February 22, 2006, 20:32
Tom Seymour
Beautiful Pinwheel
This clock is in for repair in Norm's shop. I don't know what the case looks like, but the elegant simplicity of this clock is just outstanding.




Tom
February 22, 2006, 20:33
Tom Seymour
The pinwheel escapement - beautiful in its simplicity.




Tom
February 22, 2006, 20:34
Tom Seymour
Elegant dial with sweep second hand. Nice detail on the bezel.




Tom
February 23, 2006, 14:24
Greg Reeves
Is that called a "Grasshopper Escapement"?
Very elegant!
February 23, 2006, 17:15
Gary Morgret
Hello Tom
It looks like the bob is hanging from 9 rods. Do you know if they are brass and steel, every other one? And they are round, not oval?

Regards
Gary
February 23, 2006, 20:01
Steve Cunningham
That is called a Pinwheel escapement. If the pendulum rod is original, it will be alternating metals to comensate for the temperature change. I have never seen a pinwheel marked as to maker.
February 23, 2006, 20:47
Gary Morgret
Here is another Pinwheel Escapement movement. A little dirty before cleaning. Looks to be a little more robust built.
Gary

February 23, 2006, 21:59
Tom Seymour
Greg, This is not the "grasshopper" escapement. I will post drawings of both. They do have some elements that look similar.




Tom
February 23, 2006, 21:59
Tom Seymour
This is the Grasshopper Escapement.




Tom
February 27, 2006, 20:04
Tom Seymour
Gary, It is an alternating brass and steel temperature compensating pendulum. The rods are round not oval.


Tom
February 28, 2006, 16:54
Gary Morgret
Hi Tom
I thought they looked brass and steel but wanted to know for sure. The picture I posted is out of a standing Waterbury Hall clock. This movement also has steel and brass rods but they are oval. I have been told Waterbury clocks are the only ones that have the oval rods. Have you ever heard the same?

Regards
Gary
February 28, 2006, 19:23
Douglas Barr
example of the early comp. pend. note oval shape of rods


February 28, 2006, 19:25
Douglas Barr
full pend. (circa 1790-1810)


February 28, 2006, 19:30
Douglas Barr
Side of movement. Note shape of clock pillar.Pinwheel movement French 30 day.


April 26, 2008, 17:21
Philip Hannah CMW
I am repairing a pinwheel clock that is almost identical to the one postec by Tom Seymore. Do you know its maker?

Phil Hannah
April 27, 2008, 21:03
Moses Gingerich
Those are very nice and unique clocks. I really like the pin wheel escapement and the clock in Tom's posting is so nice and simple. That is the attraction to it for myself.

There are other movements that are quite complex and difficult to understand. How would you like to repair one of the difficult ones? But again the simplicity is just plain elegant.

These two clocks are great postings guys.