Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 140
, above a diaphragm or partition M M. over which the draft -will pass as inby the arrows, and then into the lower flue space 21 *21 *, and around the furnace to the chimney 0. BOILERS. 135 The furnace is surrounded with a water space P P, which communicates with the water in the boil-ers. This… … Below the upper head of the boiler is placed a metallic shield Q Q, leaving an annular steam spaceof a few inches around it, which will, in a great degree, repress the foaming of the water when thepressure is taken off by the admittance of steam into the cylinder, and will thereby prevent the…
Mechanical engineering
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