. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ble iron sleeve forming an air-tight joint with the steam pipe boss onthe cylinder casting. The steam pipepasses through, the flange and this arrangement of piping there iscomparatively little obstruction in thesmoke-box, and the superheater and tubeend- are easily accessible. , but a vacuum relief valve is tappedinto the outer wall of each steam chestabove the live steam compartment. Thevalve motion is of the Walschaerts type,and the gear is controlled by the Baldwinpower
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ble iron sleeve forming an air-tight joint with the steam pipe boss onthe cylinder casting. The steam pipepasses through, the flange and this arrangement of piping there iscomparatively little obstruction in thesmoke-box, and the superheater and tubeend- are easily accessible. , but a vacuum relief valve is tappedinto the outer wall of each steam chestabove the live steam compartment. Thevalve motion is of the Walschaerts type,and the gear is controlled by the Baldwinpower reverse mechanism. The frames are of cast steel, 4J-J , with double front rails and separate-rear sections. The frame bracing is most spliced to the main sections. The frontand back deck plates are of cast steel, andthe fri nt bumper is of the same equalization system is divided be-tween the sen mil and third pairs of driv-ing wheels. The rear truck is of theHodges type, and it is fitted with a cen-tering spring. The latter is mounted inpockets which are cast in one piece with. SMOKE BOX SHOWING SUPERHEATER. substantial. The guide yoke is bolted toa steel casting which is placed betweenthe first and second pairs of driving-wheels, and has a long bearing on the topframe rails. A second casting, locatedahead of the main drivers, supports thelink bearings. These are placed outsidethe wheels, and are bolted in front to theguide yoke. In this way, those structural the back transverse equalizer. The thrust-bar of the spring is mounted betweenlugs bolted to the truck frame. When theengine enters a curve, the thrust bar isdisplaced and the spring is thrown intocompression, thus tending to restore thealinement. The main driving axle is of Standardheat treated steel, while the remaining 402 RAILWAY AND LOCOMOTIVE ENGINEERING. September, 1911. axles are of open hearth forged rolled steel wheels are usedin the front engine and tender trucks. The tender f
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