. The science of railways . Jfi^.llO. pounds for both passenger and freight service fora number of years and consider the results emi-nently satisfactory, whilethe builders of the Brookstandem four -cylindercompound advise a ratioof between and 3 to , the whole prob-lem of cylinder ratios forcompound locomotives isbased upon the desirabil-ity of dividing the work V_yias equally as possible be-tween the high and thelow-pressure cylinders, and. Fij^JJJ. without going into details, it is apparent that nogiven ratio will keep the work equally divided CLASSES OF COMPOUND LOCOMOTIVES. 1
. The science of railways . Jfi^.llO. pounds for both passenger and freight service fora number of years and consider the results emi-nently satisfactory, whilethe builders of the Brookstandem four -cylindercompound advise a ratioof between and 3 to , the whole prob-lem of cylinder ratios forcompound locomotives isbased upon the desirabil-ity of dividing the work V_yias equally as possible be-tween the high and thelow-pressure cylinders, and. Fij^JJJ. without going into details, it is apparent that nogiven ratio will keep the work equally divided CLASSES OF COMPOUND LOCOMOTIVES. 179 for different service and different points of cut-off,nor should this equal division of power betweenthe cylinders be given anything but secondaryconsideration in comparison with the total econ-omy of the locomotive. To partially equalize thepower of compounds, the amounts of lap and leadare not the same for both cylinders; one builderuses a separate lever in the cab for independ-ently adjusting the travel of the low-pressurevalve, as fully described elsewhere. There seems to be no general rule followed by builders in this countryas to which cylinder ofa two-c y 1 i n d e r com-j)ound should be placedon the right-hand orengineers side of theengine. Generally theintercepting valves arelocated on the engi-neers side to make theirconnections as simple aspossible, and hence, ac-cording as the design^ * contemplates the plac- ing of this valve adjac
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900
