. Electric railway journal . e a positive head on the intake sideat any stage of the tide. They are of the three-stageturbine type with vertical shafts and each has a capacityof 1500 gal. against a head of 150 lb. They were furnishedby the H. R. Worthington Pump Company. Each pump isdriven by a 200-hp Garwood direct-current motor coupleddirectly to the pump shaft at the level of the pump-housefloor. Two independent sources of current supply for themotors have been provided, one from the subway and onefrom the elevated division. The pumps are started andstopped by an attendant in the pump house
. Electric railway journal . e a positive head on the intake sideat any stage of the tide. They are of the three-stageturbine type with vertical shafts and each has a capacityof 1500 gal. against a head of 150 lb. They were furnishedby the H. R. Worthington Pump Company. Each pump isdriven by a 200-hp Garwood direct-current motor coupleddirectly to the pump shaft at the level of the pump-housefloor. Two independent sources of current supply for themotors have been provided, one from the subway and onefrom the elevated division. The pumps are started andstopped by an attendant in the pump house on signal fromthe watch tower. PIPING A 12-in. main runs from the pump house to the elevatedstorage tank. A 10-in. loop is connected to this main and 278 ELECTRIC RAILWAY JOURNAL. [Vol. XXXVIII, No. 7. encircles the yard. From this loop the 8-in. risers to feedthe sprinkler sections are taken off. The 12-in. and are cast iron and are laid entirely underground be-low the frost line. The pumps and the storage tank. inhattan Elevated Sprinklers—Plan of Yard ShowingSprinkler Sections can be used to supply the sprinkler system simultaneously,but a check valve in the 12-in. main just below the storagetank prevents the tank from filling while the pumps arerunning. When it is desired to fill the tank a 4-in. by-pass connection around the checkvalve is opened. The risers which supply thesections of sprinklers are 8 diameter. This large size wasselected to insure minimum lossof pressure at the sprinklerheads. In each riser is placedan electrically operated gatevalve furnished by the NelsonValve Company. These valvesare operated by a J^-hp, three-phase induction motor suitablygeared to the spindle. They maybe operated also by a handwheel on the spindle and a dis-engaging device is inserted inthe motor gearing so that themotor may be operated for test-ing purposes without movingthe valve spindle. Energy foroperating these motors is pur-chased from the United ElectricLi
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