MADE ONLY BY. Four words cast into a hinged iron door mounted on the front of a Cincinnati hearth kettle, backed by two patents filed three years apart — 1874 and 1877. J.H. Day & Co. was not a stove works. They were an industrial machinery manufacturer who also invented a new way to manage fire around a kettle, protected it twice, and put their exclusivity claim in iron on every piece. This is the most complete example known: fire shield intact, hinged, latched, and operational after 150 years.