. The Street railway journal . supports. Thecrosshead guide isbored with recessesat both ends so thatthe slippers will ob-tain oil at each endof stroke. The crank ishaft is of Siemens- iMartin steel in onepiece, and carries,adjoining each other,the flywheel of 18 m- (55°° mm) di- diameter, weighing thirty-seven tons, and the revolving partof the alternator. The crank bearing and the outboard bear-ing have babbitt metal lined bushes in four pieces, adjustableby means of set screws. The crank, which is shrunk on theshaft and keyed, the connecting rod, the cross-head and thecrank-pin are all
. The Street railway journal . supports. Thecrosshead guide isbored with recessesat both ends so thatthe slippers will ob-tain oil at each endof stroke. The crank ishaft is of Siemens- iMartin steel in onepiece, and carries,adjoining each other,the flywheel of 18 m- (55°° mm) di- diameter, weighing thirty-seven tons, and the revolving partof the alternator. The crank bearing and the outboard bear-ing have babbitt metal lined bushes in four pieces, adjustableby means of set screws. The crank, which is shrunk on theshaft and keyed, the connecting rod, the cross-head and thecrank-pin are all of Siemens-Martin steel, finished bright. The Duplex single acting air pump is driven from thecrank-pin by means of a connecting rod and beam. Suctionvalves are omitted so that the resistance to the water enter-ing the pump is reduced and a good vacuum obtained. Thepassages for the flow of water and air are of ample size inorder to secure noiseless running at high speed, and the de-livery valves are made easily SECTIO THROUGH HIGH PRESSUREN AND EXHAUST VALVES SECTION THROUGH LOW PRESSURE CYLINDER, SHOW-ING ADMISSION AND EXHAUST VALVES the steam valves. These oil supplies are fed from a sextuplepump, which draws from one oil receiver. The oil storageand pump are mounted in a very compact form on the brace 900 STREET RAILWAY JOURNAL. [Vol. XX. No. 23. between the high and low-pressure cylinders, and the pumpis driven from the gear shaft by two eccentrics. The lubrication of all the journals and guides is made with little loss of oil is effected. This is also facilitated bythe ample provision of oil trays and splashing guards. The two vertical tandem compound high-speed condens-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
