. Electric railway journal . Fig. 7—Boston & Northern Shops—Pipe Bender two strip the coils after treatment. The exhaustion of theair in the chamber and the introduction of the hot impregnat-ing compound under subsequent pressure provide a treatmentfor the coils which other companies than the Boston & North-ern have adopted. The Chelsea plant has handled a largeamount of work for foreign street railways with successfulresults. The cost of impregnation is found to be approximately$1 per coil. Fig. 3 illustrates a dipping room for field coils at is constructed of concrete, reinforced
. Electric railway journal . Fig. 7—Boston & Northern Shops—Pipe Bender two strip the coils after treatment. The exhaustion of theair in the chamber and the introduction of the hot impregnat-ing compound under subsequent pressure provide a treatmentfor the coils which other companies than the Boston & North-ern have adopted. The Chelsea plant has handled a largeamount of work for foreign street railways with successfulresults. The cost of impregnation is found to be approximately$1 per coil. Fig. 3 illustrates a dipping room for field coils at is constructed of concrete, reinforced by gas pipe in thewalls, the roof being reinforced with old T-rails. The dippingroom is about 14 ft. square, and is equipped with a 60-gal. com-pound tank and a trolley runway for the handling and tempo-rary storage of coils. The compound used is the MassachusettsChemical Companys No. 50 insulating compound. The room. Fig. 6—Boston & Northern Shops—Automatic TruckStandards and Hoisting Equipment is lighted by five 16-cp incandescent lamps wired in conduit,and is ventilated by wall outlets of the register type. Thetrolley runway is 4-in. high by lA-in. thick, and the wheel car-riers for the coils are each 4 in. in diameter and 1 in. wide.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
