. The Street railway journal . he division wall between the boiler andturbine room. A transverse passageway between the cen-trally located boilers divides the entire installation into twosets. The unit system of steam piping employed provideslor the feeding of each turbine by the set of four boilersnearest to it. However, a transfer header along the rearwall of the building connects the headers of the two setsso that either turbine may be supplied with steam fromany or all of the boilers. All of the main headers and theconnecting header are of 8-in. pipe and are carried overthe boilers at an e
. The Street railway journal . he division wall between the boiler andturbine room. A transverse passageway between the cen-trally located boilers divides the entire installation into twosets. The unit system of steam piping employed provideslor the feeding of each turbine by the set of four boilersnearest to it. However, a transfer header along the rearwall of the building connects the headers of the two setsso that either turbine may be supplied with steam fromany or all of the boilers. All of the main headers and theconnecting header are of 8-in. pipe and are carried overthe boilers at an equal height above the floor. This ar-rangement minimized the number of bends required. Aftereach header passes through the division wall a single rightangle bend brings it to the vertical leading to the pockets are formed in the header system, and conse-quently no drip mains and connections are provided ex-cept at the turbine connections. The flue connections ofthe boilers are entirely free from bends. Uptakes about. VIEW IN THE OPERATING ROOM, SHOWING ELEVATED OFFICEAT THE LEFT 3 ft. long make connections with steel breechings, one overthe rear of each row of boilers. The breechings are sus-pended from the roof girders and each runs straight throughthe north wall of the boiler room into a reinforced con-crete stack 11 ft. in diameter and 200 ft. high. The breech- July 20, 1907.] STREET RAILWAY JOURNAL. 87 ings are of ample size to serve the contemplated additionalboiler installation, and measure 14 ft. 6 ins. by 9 ft. wherethey pass through the boiler room wall. All of the boilers are equipped with automatic stokersof the Green chain grate type, supplied with coal fromoverhead steel bunkers. Each row of stokers is belt-drivenfrom a motor located overhead in the transverse passage-way between the centrally located boilers. Each motor isof sufficient size to operate all of the stokers in the eventof the failure of one. A concrete hopper under the frontof each boiler c
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
