. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . a plung-er, two large ball checkvalves, and a separate dis-charge line. The pumpshown is the one-feed orsmallest size, and illustratesbut one of these separatepumping mechanisms. The company are makingsight feed pumps havingfrom one to sixteen amount of oil being fed to anygiven point is adjusted by the valve the level of the oil. For locomotive work, the same styleof pump body is used as that for sta-tionary work, but it is enameled insteadof being polished, and is provided witha d
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . a plung-er, two large ball checkvalves, and a separate dis-charge line. The pumpshown is the one-feed orsmallest size, and illustratesbut one of these separatepumping mechanisms. The company are makingsight feed pumps havingfrom one to sixteen amount of oil being fed to anygiven point is adjusted by the valve the level of the oil. For locomotive work, the same styleof pump body is used as that for sta-tionary work, but it is enameled insteadof being polished, and is provided witha different style of pipe connection forthe feed lines. The locomotive oil pump,however, is driven by a small motor is, in principle, a double act-ing, self-contained engine, either oper-ated by steam or compressed air, thelatter being in many wayj little motor rotates the gear shaft,through an angle oi 72°, which givesthe forcing plungers their proper the feeds are once set for theirproper flow, all the engineer has to dois to open the air valve to the motor,. SIGHT FRED OIL PfMP. and the apparatus will take care of other very important feature of shown on top, and the drops are readily this particular type of force feed lubri-seen by the engineer as they flow down cator is that it will satisfactorily andthrough the recessed cavity behind which continuously feed a mixture of powdered is a nickel disk. As soon as a drop ofoil falls into the hole below the dripnozzle, the pump plunger on its upstroke produces a partial vacuum intowhich the drop of oil is drawn. Thedown stroke forces it past the checkvalves and out into the delivery pipe. The front check valve used will sus-tain a pressure of 1,000 lbs. per sq. in.,and the rear check is used as a furtherassurance against leakage. It is plainthat with a check valve provided at theextreme discharge end of each feed line,the piping will at all times be held fullof oil. and the moment a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
