While not a stove, we have discussed these before so I feel ok posting it here. Per usual I got in a hurry to tear it down and didn't get any good before pics. The condition of the burner gives a good idea of what it was like at the start. The lever screwed to the top of the valves rotates in front of the jet to redirect fuel into the pre-heat pan. I knew it was a type of plumber's furnace but there was no maker's name. I had some clues from some of the construction, but nothing definite. There was this on the base of the fount. And this on the fuel cap. On the sheet metal iron rest over the valves was this. As I got it cleaned up I found this on the burner casting. OK, CL, it's a Clayton and Lambert. I couldn't find an exact match in the patent records, but found a very close model in a 1925 patent. During the patent research I found that the date on the base isn't the patent date for the device but just for the protective band around the bottom of the fount. It's a steel strap that rings the bottom of the fount and is fastened to itself with a slot and tab. C&L used this on most of their fire-pots and plumber's furnaces. Fire-pot was the term C&L used in their catalogs and advertising. The burner has openings in all three branches of the casting. There is a tubular steel sleeve in each branch that makes the screen for the burner slots. A brass plug closes off the side branches. The pump has an early style NRV at the bottom. I've seen this type of non-return valve on some other early GPAs but can remember exactly where. The original pip was a very dry and fragile piece of cork. I replaced it with a piece for viton. Finally de-rusted, painted and reassembled. I was a little disappointed in performance, I think the jet is very worn as it burned very rich even after a long pre-heat. I may try presscall's trick of soldering in a hypodermic needle to restore the jet.
