I want to thank user rockwood for the guidance he provided me. I went and looked at two Combustioneers over by Logan Ohio, I bought one of them the other one was newer but, it had been used in a shop and had some rust on it. This unit had been bought new in the 70's an used heat the house up till 3 years ago when it was replaced by a heat pump. This unit has no convection fan and was used with a air handler to pull the heat out of it. The woman that was selling it tried to get me to take both but I just don't have the room for two.
The man that had bought it new and used it was a machinist and I can see a few little things has has done to it that would make maintenance easier like a valve on the transmission drain which leads me to think it has had been well kept. If i can figure it out i will take pictures and post them.