. Railway and Locomotive Engineering. nd as long as the steam pressure con-tinues the damper will remain the steam pressure ceases acounterweight attached to a lever on theshaft has the immediate effect of closingthe damper and consequently the healedcurrent ceases through the in-closed series of flues. It may be added that the casing sur-rounding the header and superheater i< avoids interference with tlie directdraught of the flues. This is generallyadmitted to be a marked improvementover the older method of steam pipe con-nections, not only on account of the fire-box cl
. Railway and Locomotive Engineering. nd as long as the steam pressure con-tinues the damper will remain the steam pressure ceases acounterweight attached to a lever on theshaft has the immediate effect of closingthe damper and consequently the healedcurrent ceases through the in-closed series of flues. It may be added that the casing sur-rounding the header and superheater i< avoids interference with tlie directdraught of the flues. This is generallyadmitted to be a marked improvementover the older method of steam pipe con-nections, not only on account of the fire-box clearance but also preventing anyleakage that may occur at the lower jointfrom interfering with the action of theilraught necessary to combustion in thelire-box. Fig. 3 is another view of the front endwith superheater unattached and showinglocation and number of large flues, andalso system of brackets to which super-heater header may be attached. This il-lustration is a reproduction of one of the! h-c prints of Locomotive No. 1058, and. LOCOMOTIVE BOILER FRONT SHOWING NUMBER AND LOC.\TIQX OFSUPERHEATER FLUES. ?furnished with suitable hand holes bywhich inspections may be made, and, as is?shown, the branch steam pipes are con-veyed through an opening in the wall ofthe smoke-box directly to the steam chest,the opening being enclosed with a suitablecasing on the outer side of the smokebox. This method not only simplifies theconstruction of cylinder and valve cham-ber castings, but enlarges the fire-box•space, afTording a better draft 2 is a front view of the smoke boxwith superheating casing, exhaust pipe andother attachments removed, showingheader with attached superheater fluesand also showing lower flues. It will be•observed in this illustration that theimethod of the steam pine? built for the Frisco lines by the AmericanLocomotive Company, and described inthe May issue of Railway and Locomo-tive Engineering. Having thus briefly described the me-chan
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