Hoffmann Kiln

For Burning Bricks, Tiles, Pottery, Lime, Cement and Roasting Ores.
Developed in 1858 by Friedrich Hoffmann of Germany. Initially used for brickmaking, it was later used for lime-burning, and was known as the Hoffmann continuous kiln.
See Wikipedia entry for Hoffman kiln
Several have been preserved in the UK, including Llanymynech Limeworks and Langliffe lime kiln (1873) near Settle (see Langcliffe kiln)