. The street railway review . from a central system Is introduced at the center underslight pressure, thoroughly flushing all parts. Axial adjustment isprovided by metal shims arranged in quarter-bo-x fashion. Tliediameter of the shaft at the journal of a \v. machine is 15in., strikingly small in comparison to the ,^4 in. shafts required fora cross-compound reciprocating engine of corresponding capacity. Longitudinal adjustment to preserve proper side clearance is se-cured by a thrust bearing located next to the oul-board bearing is not subjected to longitudinal thrusts from
. The street railway review . from a central system Is introduced at the center underslight pressure, thoroughly flushing all parts. Axial adjustment isprovided by metal shims arranged in quarter-bo-x fashion. Tliediameter of the shaft at the journal of a \v. machine is 15in., strikingly small in comparison to the ,^4 in. shafts required fora cross-compound reciprocating engine of corresponding capacity. Longitudinal adjustment to preserve proper side clearance is se-cured by a thrust bearing located next to the oul-board bearing is not subjected to longitudinal thrusts from the actionof the steam and is consequently of small size. The two half shells are advanced in opposite directions by grad-uated set screws, so that the actual running clearances are meas-ured in thousandths of an inch. Once set, these adjustments arepermanent, and do not require frequent taking up. Steam enters the turbine successively through an automatic quickclosing throttle, hand throttle, strainer and the main admission. o Mxx) ^oeo sooo 4ooo moo Si. cc r/PfC^i. ^ofis^ /^tvs/7DIAGRAM OF COMPABATIVK valve, .\ circularsteam port surrounding the entrance to the initialstage cftnvcys this steam to all points so as to avoid stresses inci-dent to more localized admission of highly superheated Rteani. .\v\ impcn-tant feature of the steam distribution system is the pro-vision of a by-pass valve. This valve admits high pressure steamto the second stage of the turbine on overloads in order to increaseits capacity up to 50 per cent in excess of full rated load, Hyproperly proportioning the by-pass steam to the overload on theturbine maximum economy may at all limes be secured tog<therwith reserve overload capacity. This results in a slight rise in theeconomy curve on heavy overloads, resembling in some respects theengine economy curve on loads exceeding thai of maximum econ-omy. The turbine, however, only suffers in economy at heavy over-loads while the engine econo
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
