Device for recessing in heating chimneys and obtaining a higher caloric performance. (Machine-translation by Google Translate, not legally binding)

摘要

Device for recessing in heating chimneys and obtaining a higher caloric performance, characterized by consisting of a kind of box or chapel made of sheet metal, to which a face is welded, formed by three pieces of sheet metal bent and joined together; mounting this kind of box or hood on a casting plate, under which is configured an air chamber, with a take of it that may come from the street or another location, and is able to provide healthy air. (Machine-translation by Google Translate, not legally binding)