. Railway mechanical engineer . ulic pump shown in the illustration is of thehorizontal, four-plunger type and is intended to fill the re-cjuirements for a simple, hea\T duty pump for applying alarge \olume of water or other similar fluid against a highpressure. This pump, which is made by the Hydraulic Press Manu-facturing Company, Mount Gilead, Ohio, is designed so thatit may be equipped with 16 different sizes of plungers rangingfrom l-)8 in. to 5 in. in diameter, advancing by quarterinches. The water cylinders are made of forged steel for thehighest pressures. For the medium pressures, 1,5
. Railway mechanical engineer . ulic pump shown in the illustration is of thehorizontal, four-plunger type and is intended to fill the re-cjuirements for a simple, hea\T duty pump for applying alarge \olume of water or other similar fluid against a highpressure. This pump, which is made by the Hydraulic Press Manu-facturing Company, Mount Gilead, Ohio, is designed so thatit may be equipped with 16 different sizes of plungers rangingfrom l-)8 in. to 5 in. in diameter, advancing by quarterinches. The water cylinders are made of forged steel for thehighest pressures. For the medium pressures, 1,500 lli. to2,900 lb. per sq. in. inclusive, cast steel is used, and for thelowest pressures the cylinders are semi-steel. The pressuresrange from 9,500 lb. to 700 lb. per sq. in., and the watercajiacity from 24 to ,i26 gallons per minute. \\\ sizes of thispump ha\c bronze valve seats and bronze or nickel-steelvalves. A 150 h. p. motor is recjuired to operate the pump. Aflexible shaft coupling is provided for motor connection and. gh Pressure Motor Driven Pun the removal of the scale a thin heat conducting film ofPerolin is established on the metal, which prevents sedimentfrom Ijaking on in the form of scale, and at the same timeit protects the metal against pitting and corrosion. Throughits colloidal action Perolin will prevent boiler foamingand it has been found that it w-ill give satisfactory resultsirrespective of the kind of water used. In locomotive service Perolin is fed to the engine throughthe injector at the roundhouse by the hostler when he ispreparing the engine for service. None is required to befed to the engine l>y the engineer or fireman while on theroad. Where this treatment has been used in locomotiveservice it has been found that engine failures due to poorwater have been reduced, that the mileage between boilerwashings has been increased three to four times, that lesstube and tulje sheet work were required, with a consequentsaving in firebox repairs and tha
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
