I didn't stop searching for R.H.O. Mfg. Co. - products or any possible information. They made pin-ball machines before the war but were they contracted by the Government or as a sub for some other company during WW II
? I couldn't find anything, after checking long lists of U.S. companies participating in the war production.
Judging merely by some of the Osbrink-patents I think the company was involved in fine casting of alloys (aluminum, magnesium etc.) mostly in the 50s-60s.
And here is what I found today
:
View attachment 617245
This is a very complex casting by R.H.O., isn't it?
Here is the article where the photos come from:
It's from a magazine called
Missiles and Rockets from September 15, 1958.
O.K., that's the first proof that R.H.O. was manufacturing parts for Chance-Vought (but maybe for others as well).
For those who know it: could the part in question be a part of a guided missile?
Cheers!