. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Typical Application of Multiple ThrottleSuperheater Headed Combination with and has since become standard equipment. Quite re-cently the value of the superheater has been greatly in-creased by introducing the throttle between the superheaterand the cylinders, improving the operation and handlingof superheater locomotives in addition to the advantageof providing superheated steam for all auxiliaries as wellas the engine. The number of locomotives of recent design which areequipped with smoke b
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Typical Application of Multiple ThrottleSuperheater Headed Combination with and has since become standard equipment. Quite re-cently the value of the superheater has been greatly in-creased by introducing the throttle between the superheaterand the cylinders, improving the operation and handlingof superheater locomotives in addition to the advantageof providing superheated steam for all auxiliaries as wellas the engine. The number of locomotives of recent design which areequipped with smoke box throttle has been so large andtheir performance so satisfactory, that locating the throttlebetween the superheater and engine is ensidered goodpractice. With this advantage the superheater becomesa part of the boiler and is under pressure at all a supply of superheated steam is constantly availablefor operating all auxiliaries, such as headlight pumps, water pumps, stoker, steam prate shaker, sootblowers, whistle, atomizer on oil burning locomotives, Illustration Showing Extended Valve Stem and Operating Shaft With at least one of the auxiliaries, the blower, in usewhenever there is any sizeable fire in the firebox, the flowof steam through the superheater will be sufficient toprotect the units, thus avoiding the necessity of a damperarrangement for this purpose. A further advantage due to the small volume of steambetween the throttle and the cylinders, is that the loco- motive responds immediately to a movement of thethrottle, enabling the engineman to check the movementof the locomotive instantly. This is particularly of ad-vantage on yard locomotives. With these advantages and the auxiliaries consuming asmuch as 10 to 20 per cent of the boiler evaporation, theneed for a satisfactory throttle to place between the super-heater and engine became paramount. A new type offront end throttle has been introduced during the pastyear; i. e., the America
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
