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October, 1920 TAB SMA RINE - RE VEE W.. 91 MMMM e De Laval Gears Are Silent e e Therefore Efficient De Laval gears are noiseless in operation, which proves that they are correctly designed, correctly cut and correctly supported. Noisy gears not only are inefficient and wear out quickly, but they are also a great practical inconvenience, since they make it difficult to detect trouble in other parts of the power equipment, besides annoying passengers. A Cargo Oil Pump De Laval Geared Turbines Are C A aes ag ta used on pay tankers with great success. ° it 6 to 22 ls. hour. Easily Maneuvred ae 5 Alea rom C) 0 Bbls. per hour. Pressure up The De Laval marine turbine is of the impulse type, having no _ A Cargo Oil Pump with separate valve plates and removable close clearances, and can be started quickly without lengthy liners, known as the ‘‘Newport”’ type. warming up. It also has ample reversing power. The manipula- We also build pumps for other services aboard ship—Boiler tion of valves in stopping, reversing and starting is even more Feed Pump—Lubricating Oil Pumps—Transfer Pumps—Bilge simple and rapid than with a reciprocating engine. and Ballast Pumps—Sanitary Pumps—Cooling Pumps, etc. Our Engineering Department will supply complete information _ if you will state the speed, size and character of the boat under National Transit Pump & Machine Company consideration. Ask for special Bulletin M-65. OIL CITY, PENNA. DE LAVAL STEAM TURBINE CO Pa e New York Philadelphia Pittsburgh Kansas City Cleveland Houston Denver TRENTON, N. J. 122 TTT UTTTTTAMPELUUEHHLULGHLUOOA OUCH UOLOAHULUOOEAALOOOUUOUEATUOLOAOLUPUOSTUOUOLOOOUUGAOI UOMO LOOMOTODOAIOCOHIIUOOHTITOOHATIOUOATIIGGOHSEOAT spony ssty inca bons SHUNT NOTH NTL KROESCHELL CARBONIC ANHYDRIDE REFRIGERATING . EQUIPMENT Ashton Dependable High Grade Pop Valves, Steam Gages Whistles Specially Adapted for High Pressure Marine Service Unequalled for Efficiency, Durability. and Low Cost of Maintenance The Ashton Valve Co. 161 First St. Write for literature of our com- plete line. Satisfied users are our highest Cambridge, Mass. Branches New York Boston Chicago San Francisco | = a endorse- Sydney C. McLouth | | #axesemm Marine City, Mich. tata : SHIPBUILDING STEEL and WOOD Serves better, is lighter and less bulky. This equipment is compact, light, absolutely safe and reli- P lenty of water at dock for any boat. able. It meets all requirements, giving maximum service ‘ i under the most severe conditions. Repairs made to Hulls, Boilers or Already installed on many lake boats. KROESCHELL BROS. ICE MACHINE CO. New York City CHICAGO Detroit, Mich. Machinery, nights, days or Sundays. Please mention THE MaRINE Review when writing to Advertisers