. American engineer and railroad journal . n can have little significance if itsrelations to other dimensions are important and are to be con-sidered. For example, a nozzle 24 ins. high would have its tip3 ins. below the center of the 55-in. smoke-box of the Purduelocomotive, 11 ins. below the center of boiler on a 6S-in. smoke-box, and 18 ins. below the center of the boiler in an (See Fig. 20.) In the first case the tip would be32 ins. below the stack base; in the second case, 44 ins., and inthe third case, 60 ins. All these different relations are for an 298 AMERICAN ENGINEE
. American engineer and railroad journal . n can have little significance if itsrelations to other dimensions are important and are to be con-sidered. For example, a nozzle 24 ins. high would have its tip3 ins. below the center of the 55-in. smoke-box of the Purduelocomotive, 11 ins. below the center of boiler on a 6S-in. smoke-box, and 18 ins. below the center of the boiler in an (See Fig. 20.) In the first case the tip would be32 ins. below the stack base; in the second case, 44 ins., and inthe third case, 60 ins. All these different relations are for an 298 AMERICAN ENGINEER AND RAILROAD JOURNAL. exhaust nozzle 24 ins. high, and for this reason it is thoughtthat the position of the tip in the smoke-box, with relation toother draft fixtures, would be more definitely fixed if ex-pressed in inches below the center line of the boiler. 27. Average Height of Nozzle.—If the smoke-boxes are ar-ranged in groups varying by intervals of 4 ins. in diameter,from 64 to 80 ins., and the average distance of top of nozzle. Fig. 20. Sketch shomng location of top of Exhaust Nozzle with referenceto center line of Boiler, for Smoke Box &4- 80diarneter.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
