Tank Furnace Small 320×234 Medium 640×468 Large 1024×748 Download Tiff Original 2400×1754 | (1.5 MB) Description "Siemen's Continuous Tank Furnace." — Encyclopedia Britannica, 1893 Keywords continuous, furnace, glass, Siemen, tank Galleries Miscellaneous Industrial Machinery Source: The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)