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riphery, an inner drum having a back head slightly spaced from the back head of the outer drum, a centrally disposed bolt con- necting said heads. a damper plate pivoted 5 on said bolt and having a series of slots similar to the slots in the back head of the outer drum and adapted to register there- with, means projecting through the outer drum to rotate said damper on its pivot, a lo permanent annular closure between the front
ends of said drums, a swvinging door for the front end of the inner drum,-and stove pipe connections oppositely disposed intermediate the ends of said outer drum. In testimony whereof, I affix my signa- 15 ture, in presence of two witnesses. JOHN B. PASCUE. Witnesses: W. S. L. PEARCE, C. M. MTTCITELL.