Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 231
2595. … The perpetual or draiv kilns are constructed as follows: Fig. 2593 represents a vertical section of acommon form of perpetual kiln constructed for a coal-fire; Fig. 2594 is a horizontal section of the samethrough the drawing-holes. The actual burning-space is a shaft in the form of an inverted…
Mechanical engineering
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