A blurb about the O&M combo in one of the appliance magazines stated that it ran at a constant speed of something like 47 rpm and did not cause wrinkles or creases. It was also marketed under another obscure name, maybe One Minute, the makers of wringer washers. None of their products spun. One Minute, indeed! I guess the advantage of the machine was that if you had a furnace failure during cold weather, you could pull the vent pipe out and get a little heat if you were careful to have adequate fresh air, but that was a BTU rating like a furnace. Gosh, there would be enough waste heat that you could almost use a heat exchanger to heat at least part of the house in the winter. I wonder why there are no test reports on the machine or even articles of shock and awe. Maybe in some back issues of Butane/Propane news? No, it would take a tank per load. Maybe the Gas Manufacturers Association might have had an article about it, unless they were embarrassed by its inefficiency. I would hesitate about installing it on a wooden floor, even though vibration would not be a severe problem. A friend remembers that when they removed his aunt's BIG 33" Kenmore gas combo, the wood floor beneath the flame thrower burner was charred and that was only 37,000BTU. Maybe Fredrik up nawth had reason to wonder about house fires.
I just thought of something. With a BTU capacity like that, you could rig up a convection oven if you used something like a bread box or any unused container that would stand the heat and could be closed and ran the vent into one side, securely baffled to disperse the air flow, and then out the other to the outside. You might have to be careful of the wind velocity inside the oven cavity and would no doubt have to turn things so that one side didn't "overbake." You also would probably not need ever again to dust your baked goods with powder sugar if you dried fluffy white towels while baking. In a Consumer Reports article about some convection ovens, one was rated either last or unacceptable because the fan blew the food around. Obviously the manufacturer of that model did not deem a rotisserie necessary.