A record of the events in acquiring a rather large Barth type casting machine and bringing it back into service. This is an informal diary; for the presentation of the results of this project, go up one level to the main Barth Notebook .
2016-07-18: Parts List Started - and Electrics
It's the middle of July already, and I am indeed falling behind on work on the Barth (though a press and other equipment were saved in the interim). It's not quite as bad as it looks, though, as I'm falling further behind on Jounal entries than actual work. At present, I've now been through the entire electrical system and almost understand it.
I've also begun one of the basic documents for the machine: a Parts List. This Journal entry, then, is a snapshot as of today of this Parts List. It is complete for one Group of parts, 91BCD - the electrical system, except for one (important) item: a schematic. I'm still working converting phsyical wiring drawings into a schematic diagram. Click on the icon above to see this current snapshot of the Parts List. For more up-to-date versions in the future, see the Barth Notebook on Parts Lists.
2016-05-31 / -06-12: Safely Cycling the Machine
[UNFINISHED - and it's mid-July already...] In most typecasting machines there are situations where if you cycle the machine, by hand or under power, you'll break parts. It's true of pivotal type casters, it's true of the Thompson Type-Caster, and it's true of the Barth. When can you, and when can you not, cycle the machine without damaging it?
(This addresses the safety of the machine, not that of the human operator. That's a different matter altogether.)
Flywheel and Camshaft relative rates of rotation. Always operating on two types at once. Two Choker Valve openings, and the successive Pump drops. The why of cute little big machines.
2016-06-31: The Main Cams Identified
They simultaneously drive and control/time all of the various mechanisms of the casting machine. They're the best place to start understanding it.
2016-06-31: Direction of Flywheel Rotation
It's not hard to figure out, but you've got to know.
2016-05-28: The Underside of the Base
Something you don't see everyday. It reinforces (pun intended) the idea that the Barth is massively constructed. But it also shows some questionable design decisions which caused issues which were overcome by brute force rather than bypassed by elegant design.
This Barth Journal entry is in its subject pretty minor - a part of the machine you'll never ordinarily see. But it leads out into several other issues: presentation of original data, CAD models and drawings, and a parts symboling scheme.
2016-05-21 to -28: Unpalletizing
4,000 pounds four inches off the ground is too high up.
Interlude, Fall 2014 through Spring 2016
October 10-14, 2014
Moving the 60-point Barth to Wisconsin.
All portions of this document not noted otherwise are Copyright © 2014, 2016 by David M. MacMillan and Rollande Krandall.
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