. American engineer and railroad journal . nection, there is a heavy cast steel guide yokeacross the upper rails of the frame between the first and secondpair of driving wheels and the cast steel crosstie over the middlepedestal which furnishes the support for the front end of thefirebox. The front and rear systems are equalized together in the usualmanner by vertical bolts connecting the upper rail of the front GENERAL DATA. Gauge A 4 ft. H/j in. Service Freight Fuel fiit. Coal Tractive effort 66,600 lbs. Weight in working order 342,000 lbs. Weight on drivers 296,506 lbs. Weight of engine and
. American engineer and railroad journal . nection, there is a heavy cast steel guide yokeacross the upper rails of the frame between the first and secondpair of driving wheels and the cast steel crosstie over the middlepedestal which furnishes the support for the front end of thefirebox. The front and rear systems are equalized together in the usualmanner by vertical bolts connecting the upper rail of the front GENERAL DATA. Gauge A 4 ft. H/j in. Service Freight Fuel fiit. Coal Tractive effort 66,600 lbs. Weight in working order 342,000 lbs. Weight on drivers 296,506 lbs. Weight of engine and tender in working order 404,700 lbs. Wheel base, driving 10 ft. Wheel base, total 30 ft. S/j in. Wheel base, engine and tender 74 ft. 8 in. RATIOS. Weight on drivers -^ tractive effort Total weight — tractive effort Tractive effort x diam. drivers -~ heating surface heating surface -f- grate area Firebox heating surface ~ total heating surface, per cent Weight on drivers -^ total heating surface VERY BOILER ON THE BOSTON AND ALBANY 2-6-6-2 TYPE LOCOMOTIVE. THIS BOILER HAS 22 FOOT TUBES, 5,476 SQ. FT. OF HEATING SURFACE, AND SQ. FT. GRATE AREA. THE R.\TIO OF HEATING SURFACE TO GRATE AREA IS 9. THIS APPROACHES THE RATIO USED WITH NARROW FIKEEOX nOILERS. frame with the lower rail of the rear frame. As in the enginesof this type built by this company for the Virginian Railway, theload on these bolts is supported by a coil spring through whichthe lov/er end of the bolt passes and which press up againstthe bottom of the rear frame rail, thus giving the flexible sup-port at this point which is necessary in order that the threeboiler supports, viz., the two sliding bearings and the equalizingbolt, may each bear its proportion of the load in any variationof the alignment of the three. Both the front and rear trucks are of the center bearing Total weight -~ total heating surface liime equivalent simple cylinders, cu. ft
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
