The Mitchell was a fairly pedestrian car built in Racine Wisconsin. The company began in wagons and lasted in the auto business until the mid-20s, largely done in by a new model that was a sales disaster. I believe the factory was bought by Nash and I have heard its only recently been torn down.
Here's an example of the sort of thing I've been doing. These are valve cages. They are the engine exhaust valves and because there is no detachable cylinder head they are self contained and fit into the top of the cylinders. The first photo is the finished job. On the right is the only original cage I have along with one of the original valves (note the high-end original repair). The second photo is the tools and fixtures I made in order to make them, though I don't think everything is there. This sort of work is about 75% making fixtures and about 25% doing the actual job.
At the moment I'm pondering a way to use my lathe as a horizontal boring mill to bore the camshaft bearings on another early engine, one that threw a rod, so the case was smashed. Its been welded back together but, needless to say isn't anywhere near straight and flat and the welds go right through the camshaft journals.
Cheers,
Joe Puleo

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