Some time ago I read an article about the OK Supreme Lighthouse engine.
It had a vertical camshaft on which the cams were fixed at the top and therefore worked horizontally. But there was no detailed explanation of how the lateral motion of the cams was converted to vertical motion to operate the valves.
Please excuse my ineptitude! Perhaps you have a drawing in your archive.
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It must have been an able design, finishing several TTs in the early 1930s.
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