. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . a section at the mid-dle of the stop, where the speed of thetrain is about 65 miles per hour; and thethird box, a section of the speed curveat the finish of the stop. Air Pump With Water Jacketed cases where air pumps are calledupon to run continuously in shopservice with an air pressure exceed-ing 100 lbs., the Westinghouse AirBrake Company has arranged to fur-nish pumps with specially water-jack-eted air cylinders, also where theconditions are such as to demand alow air press
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . a section at the mid-dle of the stop, where the speed of thetrain is about 65 miles per hour; and thethird box, a section of the speed curveat the finish of the stop. Air Pump With Water Jacketed cases where air pumps are calledupon to run continuously in shopservice with an air pressure exceed-ing 100 lbs., the Westinghouse AirBrake Company has arranged to fur-nish pumps with specially water-jack-eted air cylinders, also where theconditions are such as to demand alow air pressure with comparatively highsteam pressure, and consequently ahigher speed than usual. In workingcontinuously under these conditions, thepump shown in the accompanying illus-tration is recommended, as it is sup-plied with a water-jacketed air air valves in this pump are placedin the center piece and lower head, aswill be observed by the water connections are made at thepipes, A and B, the water entering atA, passing around through the jacketand leaving at the outlet 9M INCH PUMP MOUNTFD ON SPECIALSTAND WITH DRIP PAN. To give greater ease of reference,these rectangular boxes and their sec-tions of the speed curve have been lifted Brake Retardation at Different Periodsof the Stop. The speed curve of an air brake stopcard tells many interesting things tothe student who sufficiently exerts him-self to analyze it. Next to the graphictale told by the collision energy line inthe comparative value of two stops, willperhaps come the diiiferent degrees ofretardation of the brakes at differentperiods of the stop. The average air brake man, afterfinishing his gaze of a stop curve on acard, if asked whether, in his opinion,the brakes hold better at the beginningof the stop or the finish, will reply in amanner which clearly indicates that hisanswer is not associated in any waywhatever with what he has just seen onthe card. Then, when his attention isdirected
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Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
