Hutton, Frederick Remsen, 1853- [from old catalog] · New York, J. Wiley & sons; [etc., etc.] · leaf 521
s areriveted together with the ring between them. The insidedimension of the ring forms the size of the door. Thebottom of the water-legs is either made of a similar ring—herecalled the mud-ring—or the inner plate is bent by agentle reversed curve so as to come parallel to the outer plateand close… … Mv| yfi TYPES OF BOILERS. 485
Mechanical engineering · Steam power plants
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