. Locomotive engineering : a practical journal of railway motive power and rolling stock . ed time, as it is that, in thishighly sensitive solution, the moleculesof the silver salts can be dislocated andbroken up with such incredible exposure of 130th of a second, dur-ing which the Empire State Express, atfull speed, was able to advance over 8inches—most rapid as it certainly is—was yet slow enough to allow a ray oflight 1,430 miles long to dash in upon theplate. If the ray of light had been agossamer golden thread, stretching fromMontreal to Winnipeg, its farthest endcould have s
. Locomotive engineering : a practical journal of railway motive power and rolling stock . ed time, as it is that, in thishighly sensitive solution, the moleculesof the silver salts can be dislocated andbroken up with such incredible exposure of 130th of a second, dur-ing which the Empire State Express, atfull speed, was able to advance over 8inches—most rapid as it certainly is—was yet slow enough to allow a ray oflight 1,430 miles long to dash in upon theplate. If the ray of light had been agossamer golden thread, stretching fromMontreal to Winnipeg, its farthest endcould have sped over half the continent,and the thread itself have been entirelyreeled into the camera, in the time re-quired for the shutter to spring across theface of the lens. Geo. S. , Ont. § $ &Peculiar Wear of Valves. Editors: W. W. Pitts says that the wear is evi-dently caused by reverse lever not beinglet down in corner while running downhill. I am running an engine on a 25-milehill; the lever is run in corner down still the valves have this peculiar Zocomotive Engineering Fig. 6ADJUSTING ECCENTRICS. against the seat. While this relief per-mits the valve to be moved more easily,its motion consuming less power, if thissaving of power was all there was to it,it would never be worth more easily, there is less springof the parts moving it, less wear of pinsand other parts, and less wear of valveface and valve seat. All these parts willmaintain their integrity longer, the resultbeing a more satisfactory steam distribu-tion and a saving from less leakage. Buta balanced valve may be wasteful of steamquite as easily as saving. I am led to this line of thought by thecommunication from S. J. Hungerford,with the title Peculiar Wear of Valves,in January issue, and by happening tohave been an actor in the making of thefirst (as well as several succeeding) slidevalve for a locomotive that I ever sawbalanced by four rectangular packingstri
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Keywords: ., bookcentury1800, bookdecade1890, bookidlocomotiveen, bookyear1892
