Heating Drum (Patent No: 211468)
Inventor: Bishopric, William (assignee)
Description: Frederick Minto and William Bishopric, assignee of a half interest, both of Edmonton, Alberta, Canada, 10th May, 1921; 6 years. Filed 25th October, 1920. Receipt No. 337,427.
Claim.—1. A heating drum comprising chambers having walls converging to the stove pipe lengths, tubular members forming communicating means from the lower to the upper chambers, a stovepipe length projecting downwardly into the upper chamber, and a wall damper closing an opening in the upper chamber wall.
Claims allowed, 1.