Necroing the thread, but the earliest documentation for double lunged bellows in metal work I have found is in De Re Metallica. The majority of setups show 2x single bellows, but a proper double bellows is shown and described in one spot (Book seven, on assaying). If anyone is aware of anything thing that predates that (1556), I would love to know about it.
History of bellows in forges.
in Bellows, Blowers
Posted
Necroing the thread, but the earliest documentation for double lunged bellows in metal work I have found is in De Re Metallica. The majority of setups show 2x single bellows, but a proper double bellows is shown and described in one spot (Book seven, on assaying). If anyone is aware of anything thing that predates that (1556), I would love to know about it.