Hi Bill, Fascinating subject here, thank you for the summaries of your research!
You can sometimes find the slave clocks for the US pneumatic systems. There's one on eBay now. Made by Hahl, not sure what shape its in, but the pictures don't look bad. I'm not sure what kind of pressure you'd need to operate one of these, but I suspect you could probably rig some sort of impeller system by using a small electrical solenoid pneumatic valve hooked to a compressed air source. From some simple research these valves seem to be fairly easy to find and not too expensive. If anyone has a circuit or gizmo for driving an electro-mechanical slave clock from a disciplined time source that could probably be used more or less with no modification to drive the relay for the pneumatic valve as easily as the relay on the other style slave clock. One would probably want to include some sort of air filter/pressure regulator assembly too. I suspect the filter/pressure regulator systems sold for use with artists air brush systems might work, and those can often be found cheaply. Looking at the size of the piston assembly on the clock it might be possible to run one of these from canned air without needing to use a compressor, but replacing the canned air might be a pain. Again one of the small air compressor systems sold for airbrushes might work well. Sounds like this might actually be a fun project! -- Russell At 10:52 PM -0500 2009/03/10, Bill Hawkins wrote: >Would like to see one of those pneumatic clocks. If I owned one, I'd >build a GPS disciplined pneumatic oscillator for it. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
