Of ovens there is a great variety of form; but as the most of them are embarrassed with apparatus for collecting other products besides ... At the ends ere is a small door for charging and drawing. ... When the fire is first started all air-holes are shut; when it is fairly caught the chimney may be filled up with dry wood, the hole closed, but not tightly, and airholes opened at the ends. ... is more light, more fria lo. and less calorific than from dr , besides being less economical in the manufacture.
|Title||:||Appletons Dictionary of Machines, Mechanics, Engine-work, and Engineering Illustrated with Four Thousand Engravings on Wood|