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What is this Chelsea Movt From? "Click" to Login or Register 
IHC Life Member
Picture of William D. White
posted
Someone gave this to me a few weeks ago and I can't tell what it was used for. It is apparently geared to run eight days. It has a Swiss platform escapement with Breguet hairspring and Incabloc shock protection. The center post with thumb screw looks like it's for holding some kind of cover in place. It has a lever for hand winding. Also a set of anti-backlash gears driven from the MS barrel. 2 shafts protruding from the top plate: 1 is from the anti-backlash gearset and the other from the pinion of the 2nd wheel.

What the heck is it?

Thanks!

William

 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Life Member
Picture of William D. White
posted
2

 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Life Member
Picture of William D. White
posted
3

 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Life Member
Picture of William D. White
posted
4

 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Member 1736
posted
The shafts look like they might take a roll pin to hold a gear... I'm curious if it is a timing mechanism rather than a clock.
 
Posts: 2032 | Location: San Diego, California in the USA | Registered: August 30, 2012
IHC Life Member
Picture of William D. White
posted
Paul,

Yes, that's kind of what I think too, but I didn't think it was more gears ...maybe going to some kind of actuators. Both shafts would have plenty of torque so maybe even timed drives for some kind of positioning of a telescope or ....??? So maybe more gears? Someone here must know!

William
 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Life Member
Picture of William D. White
posted
Ok. I think I just figured out what it's from: I believe it's the drum movement from a vintage recording barograph. This makes sense because the center shaft is finely machined to accept bearings inside the drum.

William

 
Posts: 1564 | Location: San Francisco, California USA | Registered: September 01, 2008
IHC Member 1736
posted
This one is close, but not quite... Same general idea though... the devices are designed to measure data against time and provide a written record.

 
Posts: 2032 | Location: San Diego, California in the USA | Registered: August 30, 2012
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