. American engineer and railroad journal . sreached in the article quoted above, and to determine under whatconditions and in what quantities water-spray will improve com-bustion. It may be that this idea is of practical value.—EditorAmerican Engineer.] at a time and give the operator time to take care of them. Aftercutting off one group of six, the cutting-off .process can be imme-diately repeated without facing off the end of the casting re-maining on the face plate. The rings are left rough on° theinside. Quadruple-Expansion Marine Engine. A somewhat novel departure in marine-engine practic
. American engineer and railroad journal . sreached in the article quoted above, and to determine under whatconditions and in what quantities water-spray will improve com-bustion. It may be that this idea is of practical value.—EditorAmerican Engineer.] at a time and give the operator time to take care of them. Aftercutting off one group of six, the cutting-off .process can be imme-diately repeated without facing off the end of the casting re-maining on the face plate. The rings are left rough on° theinside. Quadruple-Expansion Marine Engine. A somewhat novel departure in marine-engine practice, whichwill, no doubt, be followed with interest, hasjustbeen made by theCentral Marine Engine Works of Messrs. William Gray & Company,Limited, of West Hartlepool, in the design of engines which theyhave fitted to the new steamer Itichmona. recently built by tbemto the order of Messrs. Hamilton, Fraser & Company, of Liverpool. In the engines under notice there are five cylinders, the two low- 116 AMERICAN ENGINEER, CAR BUILDER. on the siugle round voyage to Australia or New Zealand of acargo boat carrying 6,000 or 7,000 tons, at a speed of eleven knots. The designers of the engines confidently anticipate that, bymeans of the various improvements effected, the consumption ofcoal will be brought down to a figure closely approximating to1 pound per I. H. P. per hour.—The Practical Engineer. Cast Iron Smoke Stack—Chicago & Northwestern Railroad. In the accompanying drawing we show the standard cast-ironstack of the Chicago & Northwestern Railroad. The stack andbaoe are all in one casting with the holes eored for securing it tothe smokebox, so that there is no labor whatever expended on it,except to put it in place and paint it. Three patterns suffice forall engines. A single pattern is used for stacks of various lengths,the diameter at the base and throat and the taper being main-tained while the diameter at the top depends upon the stacks average somewhat more t
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering