. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . AUTOMATIC FIRE DOOR. interesting report on the above reference to superheating locomotivesan excellent illustration was given of two. SI UK VIEW OF AUTOMATIC FIRE DOOR. locomotives on the Erie railroad,—engine1625 saturated, and engine 1654 super-heated. At the rate of sixteen miles anhour, engine 1625 developed 590 draw-barhorse-power and showed a rapid decrease after sixteen miles an hour, while engine1654 at sixteen miles an hour developed750 tons draw-bar horse-power andshowed
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . AUTOMATIC FIRE DOOR. interesting report on the above reference to superheating locomotivesan excellent illustration was given of two. SI UK VIEW OF AUTOMATIC FIRE DOOR. locomotives on the Erie railroad,—engine1625 saturated, and engine 1654 super-heated. At the rate of sixteen miles anhour, engine 1625 developed 590 draw-barhorse-power and showed a rapid decrease after sixteen miles an hour, while engine1654 at sixteen miles an hour developed750 tons draw-bar horse-power andshowed a decided increase up to twenty-four miles an hour and remained nearlyconstant up to thirty miles an hour. Thiswas due to reducing the rate at which theengine drew steam from the boiler. In-creasing the boiler capacity by superheat-ing permitted a longer cut-off with agiven throttle on engine 1654. The elimi-nation of cylinder condensation and thehigh temperature of the superheatedsteam make it possible to operate loco-motive boilers at lower pressures, thanis practical with saturated steam, therebyincreasing the life of the boiler. Takingthe modern locomotive with all its de-ficiencies the superheater designer liasbeen able to produce a
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