Barns
It was called a "lazyman" and was a dustbin, with a length of pipe welded/attached to the top of the lid, which was then put, inverted, onto the dustbin. There was also a "spout" welded/attached to the side of the bin, about 9" down from the top. Fill with cold water and apply heat source to bottom of said "lazyman". When hot water was required simply pour in cold through the inverted lid and hot would come out of the spout. Simples. Regards to all; CB.
Clearly, they were locally manufactured!