. The Street railway journal . ad of over 50per cent, and temporary overloads offrom 75 per cent to 100 per cent. Thehigh pressure cylinders of both enginesare jacketed, and there are also suppliedwith each engine superheating receiversof large capacity between the high-pres-sure and low-pressure cylinders. About10 per cent of the amount of steam re-quired by each engine is condensed inreheater coils and returned to the feed-water practically at a temperature of the water in the boilers,thus adding to the economy of the plant. The speed of each engine is controlled by means of a power-ful shaf
. The Street railway journal . ad of over 50per cent, and temporary overloads offrom 75 per cent to 100 per cent. Thehigh pressure cylinders of both enginesare jacketed, and there are also suppliedwith each engine superheating receiversof large capacity between the high-pres-sure and low-pressure cylinders. About10 per cent of the amount of steam re-quired by each engine is condensed inreheater coils and returned to the feed-water practically at a temperature of the water in the boilers,thus adding to the economy of the plant. The speed of each engine is controlled by means of a power-ful shaft governor, situated in the fly-wheel. The governoroperates a shifting eccentric to which are connected the auxil-iary steam valves on both high-pressure and low-pressurecylinders. The main distribution valves on both cylinders areconnected to a fixed eccentric, as are also the main exhaustvalves. As the load changes the cut-off is varied alike onboth cylinders, maintaining at all times an equal division of the To ^l. ntinal# -Batterv Terminal KEY RqunUzer Leails Positive Leads Negative Leads Discharge Resisiaiict Leads -+- Field k Wattmeter Leads —Field Leads Alternating Current Leads ENGINES AND GENERATORSThe direct-connected railway unit consists of an 18-in. WIRING PLAN OF ALTO POWER HOUSE work between high-pressure and low-pressure cylinders. Thevalves are of the quick-opening grid-iron type, giving a largeport area as well as a minimum clearance. Each engine isfitted with an automatic lubricating system, delivering a supplyof oil to all wearing parts under pressure. A feature of special interest is the use of Mcintosh & Sey-mour compound-delaying dashpots on the larger engine that January 9, 1904.] STREET RAILWAY JOURNAL. 61
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
