Hutton, Frederick Remsen, 1853- [from old catalog] · New York, J. Wiley & sons; [etc., etc.] · leaf 562
bes. With very fine fuel, such as coal-dust, and where sawdustis used as fuel, the grate-bar has to become a perforated plate.Where oil or gas is used the grate-bar disappears entirely, andthe gas will be passed up through the perforations made in afire-brick or similar floor which converts the… … Fig. 448. This is a labor of considerable difficulty and requires that thefurnace-door should be open while it is going on, and the coldair thus admitted not only deadens the fire but cools theheating-surface and checks the generation of steam. Whatare called shaking-grates are grates whose bars…
Mechanical engineering · Steam power plants
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