Bought a couple of boxes at a local auction and this torch wa inside. Never seen one quite like it. I think it is pretty old as all the names/numbers are worn off. Anyone with idea of what is the purpose of the funnel?
It's use for spray coating metal objects such as shaft ends etc. Different grades/ compositions of fine powder alloys like nickel and tungsten are poured into the funnel, the object is heated till cherry red, you press the lever and spray coat away.