The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . at at which the engines are working, the excessforming a reservoir of energy to provide for irregular firing orfeeding. Another type of large-tube boiler which has been used in theBritish and in other navies is the Niclausse, shown in fig. ^ is also in use on land in several electric-light installa-tions. It consists of a horizontal steam-chest underwhich is placed a number of elements arranged side by sideover the fire, the whole being enclosed in an iron casing linedwith firebrick w
The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . at at which the engines are working, the excessforming a reservoir of energy to provide for irregular firing orfeeding. Another type of large-tube boiler which has been used in theBritish and in other navies is the Niclausse, shown in fig. ^ is also in use on land in several electric-light installa-tions. It consists of a horizontal steam-chest underwhich is placed a number of elements arranged side by sideover the fire, the whole being enclosed in an iron casing linedwith firebrick where it is exposed to the direct action of the element consists of a header of rectangular cross-section,fitted with two rows of, inclined close-ended tubes, which slopedownwards towards the back of the boiler with an inclination of6° to the horizontal. The headers are usually of malleable castiron with diaphragms cast in them, but sometimes steel has beenemployed, the bottoms being closed by a riveted steel plate, andthe diaphragms being made of the same material. The headers are. Belleville Boiler. bolted to socket-pieces which are riveted to the bottom of thesteam-chest, so that any element may be easily removed. Thetube-holes are accurately bored, at an angle to suit the inclinationof the tubes, through both the front and back of the headers andthrough the diaphragm, those in the header walls being slightlyconical. The tubes themselves, which are made of seamless steel,are of peculiar construction. The lower or back ends are reduced indiameter and screwed and fitted with cap-nuts which entirely closethem. The front ends are thickened by being upset, and the partswhere they fit into the header walls and in the diaphragm are care-fully turned to gauge. The upper and lower parts of the tubesbetween these fitting portions are then cut away, the side portionsonly being retained, and the end is termed a lanterne. A smallwater-circulating tube of thin sheet steel, fitte
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
