. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . The real for the throttling ofthe pump is the leaky train line. Anotherreason is the failure of enginemen to keepthe brake valve handle in release positionwhen charging up an empty train, or, onewhose pressure has partly leaked awaywhile the engine has been cut off. Allowing that the locomotive brake ap-paratus is up to the standard, as states, the throttling of the pumpis still possible, because the pipe to thespring chamber of the S. F. governor(excess pressure top), being p
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . The real for the throttling ofthe pump is the leaky train line. Anotherreason is the failure of enginemen to keepthe brake valve handle in release positionwhen charging up an empty train, or, onewhose pressure has partly leaked awaywhile the engine has been cut off. Allowing that the locomotive brake ap-paratus is up to the standard, as states, the throttling of the pumpis still possible, because the pipe to thespring chamber of the S. F. governor(excess pressure top), being piped fromthe feed valve pipe, any drop in the feedvalve pipe pressure will cause a drop alsoin the chamber above the diaphragm ofthe governor top, thereby allowing the :=: 7 *■ , --~:j MA <■- if -si AIR PUMP OIL HOLE TAPPING * k 1 The S. F. governor is without doubt avaluable feature of the E. T. equipment,,when accompanied by proper manipulationand a tight train line, but until somemethod is devised to reduce the train lineleakage, due mainly to poor and frozenhose and gaskets, defective draft rigging,etc., the S. D. governor is the proper thingto overcome the delays and annoyancesthat accompany these conditions. Regarding the undue wear on the steamvalve and its seat: This, in my opinion,is more noticeable where two pumps arein use. Where one pump was being usedformerly, the small amount of steam ad-mitted when the valve commenced toopen was sufficient to start the pump im-mediately and raise the pressure the re-quired amount for closing the steamvalve. Now, with two pumps this sameamount of steam is divided between thetwo, causing them to drag, and the steamvalves to fluctuate slowly because therise in air pressure is not positive enough)to close it. This fluctuation of the governor causesan increased
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
