. Electric railway journal . is an inclined agitating fire plate of twoleaves, the lower one resting upon the grate. To these his duties. This objection is probably valid in the caseof automatic feed-water regulators, but does not hold inthe case of pressure regulation. FEATURES OF BOILER OPERATIONAn inspection of recent boiler rooms impresses one withthe increasing attention being given to measurements ofvarious kinds. Coal-weighing hoppers, Venturi and othertypes of water meters, steam-flow meters, COo recorders,recording pressure gages, draft gages and the like are theorder of the day. This
. Electric railway journal . is an inclined agitating fire plate of twoleaves, the lower one resting upon the grate. To these his duties. This objection is probably valid in the caseof automatic feed-water regulators, but does not hold inthe case of pressure regulation. FEATURES OF BOILER OPERATIONAn inspection of recent boiler rooms impresses one withthe increasing attention being given to measurements ofvarious kinds. Coal-weighing hoppers, Venturi and othertypes of water meters, steam-flow meters, COo recorders,recording pressure gages, draft gages and the like are theorder of the day. This is a sign of the appreciation of aprinciple which has long been useful in the engine room,namely, that better service can be secured when the oper-ators can see the results of their efforts. In the engineroom these results are more evident and the quantitiesinvolved are more easily measured. Users of CO, appa-ratus testify to an increase in output due to careful watch-ing of the flue gas composition, as a high percentage of. By-Pass Priming Pump on Jet Condenser—Twin Feed-Water Heater of the Open Type with Meter leaves a reciprocating motion is given, and as the coalflows over them the large lumps of coke are broken grates have an average travel of 1 0 ft. per burn from 20 lb. to 40 lb. of coal per square footof grate per hour and have reached a maximum rate of65 lb. The underfeed stoker now appears to be making rapidprogress. As it is better adapted to forcing than thechain grate, a combination of the two types in a boilerroom would have certain advantages, the underfeedstokers being brought in for peak loads. In many of thelarger plants more than one type of stoker is in use, asthe present development is so rapid that constant experi-menting is necessary to keep pace with it. Closely related to the automatic stoker is the auto-matic pressure regulator, because rapid forcing of thefurnace makes it difficult for the attendant to manipulatehis fires, especi
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