. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . head arch, G, of brickwork, and the mass of the brickwork short tubes, h, which cross the space between the twoboilers, are water-spaces, being open at each end into the respec-tive boilers, beneath the water-line therein; thus, the heatedcurrent being intercepted by this arrangement of tubular water-spaces, as it traverses the intermediate chamber, imparts its heatto an extended heating area. The t
. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . head arch, G, of brickwork, and the mass of the brickwork short tubes, h, which cross the space between the twoboilers, are water-spaces, being open at each end into the respec-tive boilers, beneath the water-line therein; thus, the heatedcurrent being intercepted by this arrangement of tubular water-spaces, as it traverses the intermediate chamber, imparts its heatto an extended heating area. The tubes are disposed in tworows, sloping at reversed angles from one boiler to the other, toaid the internal circulation and the passing away of the central thoroughfare, f, then conveys the current of heatand gaseous products to the front end of the boiler, where itdiverges, as at I, descending into a short transverse flue, j, passing each its own supply of steam, through the overhead vertical pipes,o, to the horizontal steam-chest, p. Any number of such gene-rators may, of course, be combined together, securing all theadvantages of an intermediate flue-cell .between beneath the generator on that side. This conveys the currentinto the external longitudinal flue, K, surrounding and covering ina great portion of the outer side and bottom of that generator;and this flue, K, then forms the duct for the traverse of the currenta second time to the far end of the boilers. Having reached thispart, the current next enters another bottom transverse flue, L,beneath the back end of the intermediate chamber or cell, f, andthrough this short flue the current enters the external longitudinalflue, M, of the opposite generator, precisely similar to the before-mentioned external flue, k. In this way, this latter generator iswell heated externally, like the former one; and as the flue runsall the way back to the furnace end of the boiler, the currentfinally passes off along it, an
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Keywords: ., bookcentury1800, booksubjectdecorativearts, booksubjectdrawing
