. The railroad and engineering journal . cross the entire width of the fire-box iscovered with f^re-brick to receive small particles of fuelwhich the draft through the grate would otherwise sweepover the bridge wall. Patent No. 352,215, of November g, 1886, shows an im-proved form of bridge wall which practically separates acombustion chamber within the fire-box from the fuel sup-porting space on the grate. Patent No. 354,370, of December 14, 1886, is for a con-struction of Doiler in which the rearward flue-sheet of thefurnace is without perforations, and acts as a bridge walldispensing with t
. The railroad and engineering journal . cross the entire width of the fire-box iscovered with f^re-brick to receive small particles of fuelwhich the draft through the grate would otherwise sweepover the bridge wall. Patent No. 352,215, of November g, 1886, shows an im-proved form of bridge wall which practically separates acombustion chamber within the fire-box from the fuel sup-porting space on the grate. Patent No. 354,370, of December 14, 1886, is for a con-struction of Doiler in which the rearward flue-sheet of thefurnace is without perforations, and acts as a bridge walldispensing with the separate bridge walls in the precedingforms of this boiler. Patent No. 361,661, of April 19, 1887, to J. F. Woottenand J. Snowden Bell, is for a form of this boiler in which 460 THE RAILROAD AND [October, 1891. a central partition or water-wall is introduced in the fur-nace, making in eflfect two furnaces, with a bridge wall from the report of tests made by Dr. C. M. Cresson, of aWootten boiler and an ordinary locomotive boiler burn-. Fig. 2. Fig. WITH WOOTTEN BOILER. between the furnaces and the combustion chamber andflue. This construction offers the advantages of alternate fir-ing, so that the gases from the fresh fuel in one furnacecan meet the intensely heated flames and products of com-bustion from the other furnace, and produce a bettercombustion. The effect of these improvements, which it will be seen Fig. 3
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
