Gas Fired Smelting Furnace.
With this small furnace you can melt down aluminum, brass, copper; preheat small, thick pieces of iron and steel for brazing or forging; caseharden soft steel; make up alloys and bake vitreous enamels on metals.
You can use either LP or city gas.
Four pages ( 3 sheets - front on first and last sheet, front & back on other sheet ) B & W photos, illustrations, materials/parts list and instructional narrative.
My plans are from original source materials such as books, magazines and other publications and the pages are carefully removed.