. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of more than 70,000 lbs., which in asense indicates its capacity and suitability for a certainclass of service, but is neither definite nor specific. Designing engineers take into account such factors asratii) (It evai)orating surface to scjuare feet of heatingsurface, grate area, cylinder volume, adhesive weight totractive power, etc., and for their jjurpnse these factorsprdjKrly observed are essential to a well designed unit. In the operation of locomotives, however, we meet dif-ferent jiro
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . of more than 70,000 lbs., which in asense indicates its capacity and suitability for a certainclass of service, but is neither definite nor specific. Designing engineers take into account such factors asratii) (It evai)orating surface to scjuare feet of heatingsurface, grate area, cylinder volume, adhesive weight totractive power, etc., and for their jjurpnse these factorsprdjKrly observed are essential to a well designed unit. In the operation of locomotives, however, we meet dif-ferent jiroblems for solution, and it is in one particular))hase of this we find need of more expressive terms, orA Xew language, and that is in the matter of lubri-cation. Those who have to do w-ith the lubrication of locomo-tives are as a rule content with the fact that a larger, morepowerful or faster locomotive requires more lubricationthan a smaller one at slower speed, and, %vhile pints ofoil per 100 miles run, and drops of oil used per minute,have in the past and are still used as standards, or yard-. A Comparatively Light American Type Passenger Loco some time past have almost become meaningless m modernpractice. In the matter of names, titles or terms indicative ofcapacity or other essentials of steam locomotives we havebuilt on. or added to, the original or primitive designation,which was generrily based on the diameter of cylinder; stick to measure quantity, and are being diligently ex-pounded, ])roposed and propounded, both in season andout, yet if there is a lubricating engineer today who knowsthe area or wearing surface of different locomotives insquare inches that requires lubrication, and employs thisas a measure or unit of service in determining the proper 346 November, 1923 RAILWAY AXD LOCOMOTIVE ENGIXEERING 347
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
