. Electric railway journal . ddle and rear water-leg are made without riveted joints,except where they are attached to the shell of the tubularboiler. Handhole plates are provided opposite each tube,giving access for cleaning and renewal. The legs are pro-vided with staybolts. The front saddle is provided withcompression plugs, placed opposite each tube, thus elimi-nating gaskets. The front box headers for the lower watertubes are made of flowed steel, the bearings for the hand-hole plates being faced on the inside to insure perfect con-tact for the gaskets. Each header is independently con-ne
. Electric railway journal . ddle and rear water-leg are made without riveted joints,except where they are attached to the shell of the tubularboiler. Handhole plates are provided opposite each tube,giving access for cleaning and renewal. The legs are pro-vided with staybolts. The front saddle is provided withcompression plugs, placed opposite each tube, thus elimi-nating gaskets. The front box headers for the lower watertubes are made of flowed steel, the bearings for the hand-hole plates being faced on the inside to insure perfect con-tact for the gaskets. Each header is independently con-nected to the upper tubular boiler, with extra gage orthickness of circulating or arch tubes, causing the circula-tion of each tube to be taken care of independently andpreventing any by-passing of the water. The water circulation is as follows: The colder waterpasses down the rear water-leg into the water tubes, whichare inclined upward toward the front end of the water passes upward and forward through these tubes. Combination Fire and Water-Tube Boiler Without Casing in the same direction as the travel of the gases into thefront water-saddle headers and circulating tubes into thefront end of the upper tubular boiler, and to the rearthrough the tubular boiler, depositing the scale on the bot-tom of the shell of the upper tubular member, away fromany fire action. This rapid circulation is said to keep thelower water tubes free from scale. The boiler rests on cast-iron columns beneath the cor-ners of the front water-saddle and rear water-leg, sup-porting the boiler entirely independently of the of the illustrations shows the boiler as constructed with a steel jacketed casing instead of the usual brick set-ting. The casing is lined with tile insulated from the steelplates with non-conducting material. With a brick settingthe method of support is such that the masonry walls arerelieved of any weight or strains due to expansion of theboiler shell. The brick si
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
