. American engineer and railroad journal . tical side view of thisarrangement isshown in fig. openings at thefront and rear endsof these box-likeheaders are con-nected by means ofconnecting bends,as shown in detailin fig. 3. These, inturn, have plug-shaped ends (fig. 5),which are drawntightly into elastic, bronze-like metal packing rings (fig. 4) seated in the headers(fig. 6), this being done by means of two bolts, thus forminga joint, which can easily be made up and kept tight. The bolts holding the bends in place have ball-shaped are received in spherical sockets
. American engineer and railroad journal . tical side view of thisarrangement isshown in fig. openings at thefront and rear endsof these box-likeheaders are con-nected by means ofconnecting bends,as shown in detailin fig. 3. These, inturn, have plug-shaped ends (fig. 5),which are drawntightly into elastic, bronze-like metal packing rings (fig. 4) seated in the headers(fig. 6), this being done by means of two bolts, thus forminga joint, which can easily be made up and kept tight. The bolts holding the bends in place have ball-shaped are received in spherical sockets in the headeis, thusgiving the nut end of the bolt perfect freedom of motion. After connecting the headers front and rear in the mannerabove described, it will be seeD, by referring to fig. 7. that, asthe water inside the inclined tubes is heated, it will rise inthem to the headers, anil then it will flow upward from cueboxlike header through the connecting bend into the one aboveit, and so on to the top, and thence into the overhead drum. DETAILS OF BOILER. 524 THE AMERICAN ENGINEER [November, 1894. (at the front end). This overhead drum is about half full ofwater. By constructing the vertical section in the manner de-od it is made flexible, and can readily adjust itself to theunequal expansion of the tubes without placing excessivestrains on the various parts. In making up a boiler, a number of these vertical sections are placed side by side, the heightand width of the arrangement of tubes being governed firstby the amount of heating surface required, and secondly bythe space available in which the boiler is set. The method of construction at the rearends of the boiler is shown in fig. 8. wherefour boilers are seen. Over the top of theseveral steam and water drums is shown themultiple which collects the steam fromeach and finally delivers it into the -drum. About the center, beneath the steamand water drums, is shown the feed drum,below which is seen the mud drum. Whenthe com
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
