Need help with heater unit old

Anyone ever see one of these or know anything about the Eaton Bumper & Spring Sercive Co out of Cleveland OH? Picked it up couple years ago cause it was cool and excellent shape. Just wanted to get some history on it. I am thinking it is from around 30's

 

We had those mounted in the covered cabs of our '46-52 Seagrave (Columbus built) fire engines. It was a big cab interior and the heater did its job working almost every winter evening. I'm surprised you found this one in this apparent nice condition. If you have an old timer still in one of your local Radiator Repair Shops I'll bet they could refer you to a vendor that has a supply of parts for those still.
Normbc9

 

Thanks Norm. Most of the rad shops around here closed up and old timers went with them. It is in almost new condition actually. Was going to put it in project but selling project so guess this might get sold or go on shelf.

 

That patent was reissued in 1928 according to pat2pdf.org.