Improvements in or relating to Retorts for the Distillation of Shale.

摘要

12,254. Fell, J. W. March 30, [Convention date]. Retorts; carbonizing- apparatus.-A cast-iron shale retort is formed tapered and in sections, the top of each of which is enlarged to form, in conjunction with the tail of the section next above, a gas-collecting passage D which is provided with an outlet passage H leading to a vertical main.