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MARINE REVILEW August, 1922 How Ship Engineers Learn From Land Practice into operation any device which has proven itself particularly efficient in land practice, because his problem of economy of fuel consump- tion is even more acute than any land problem could be. Such a device is the Todd Thermo- feed, which in land plants has shown as high as a 12% fuel saving with fixed power output, and which in operation on marine boilers has greatly aided in efficient and economical power main- tenance. Marine engineers know that thereisa water level point at which boilers func- tion at maximum capacity, and that the closer the water level can be kept to this exact point the greater the economy in fuel consumption. No use leaving such a delicate prob- lem as this to human water tenders. Put it in the hands of the automatic water tender—Todd Thermofeed—which watches variation in water level closely. Drop us a postcard and ask us for defiinite facts on how the Todd Ther- mofeed is developing for marine use. Tis marine engineer is quick to put TODD SHIPYARDS CORPORATION Plant of WHITE FUEL OIL ENGINEERING CORPORATION 742 East 12th Street, New York City THERMOFEED ‘For steady and economical boiler feeding WATER ; CONNECTION [< The Todd Thermofeed is a device for the auto- matic control of water level in boilers, by opening and closing a valve on the feed line as may be required. The water level in the chamber shown above is the same as the water level in the boilers, this level being automati- cally kept at the desired point by the action of the spherical float shown. When the water level gets too high, the float rises and by the operation of its toggles allows steam to pass from the chamber into pipe shown at top of diagram. This throttles the feed water. When the water level gets too low, the reverse hap- pens and the valve on the feed line is opened. a Wa 4 7 I s 7 sats : o,* Py Please mention MARINE Revirw when writing to Advertisers