. American engineer and railroad journal . C= K + R\ Lg, ^ ^ (/? + R)Jf. (R ^\g) + (Ji + ig - g) 2 Pennsylvania, having very heavy grades and sharp curves. The entire weight of the engine is carried on 12driving-wheels arranged in two groups of each groupwith its cylinders working in a separate frame and form-ing a truck or bogie. It differs from the Fairlie double-bogie engine in having a boiler of the ordinary form, andrather resembles the double-truck engines which werebuilt by the late William Mason at Taunton several yearsago. Each truck has four cylinders, the engine being a com-po
. American engineer and railroad journal . C= K + R\ Lg, ^ ^ (/? + R)Jf. (R ^\g) + (Ji + ig - g) 2 Pennsylvania, having very heavy grades and sharp curves. The entire weight of the engine is carried on 12driving-wheels arranged in two groups of each groupwith its cylinders working in a separate frame and form-ing a truck or bogie. It differs from the Fairlie double-bogie engine in having a boiler of the ordinary form, andrather resembles the double-truck engines which werebuilt by the late William Mason at Taunton several yearsago. Each truck has four cylinders, the engine being a com-pound of the Vauclain type. Steam is carried to the rearcylinders by a steam-pipe under the running-board. Wateris carried in two side tanks and in a tank on the rear endof the frame. The engine is of the standara 4 ft. S^ The boiler is 50 in. diameterof barrel, and has 167 tubes2 in. in diameter and 12 ft. long. The fire-box is 66 and 47;:s in. wide inside, the depth being 59^4 in. atthe front end and 40 in. at the DOUBLE-TRUCK COMPOUND LOCOMOTIVt: BY THE BALDWIN LOCOMOTIVE WORKS. Then from trigonometry Example: Given the radius of the main track, R =, the radius of the turnout R — , the stand-ard gauge ,§■ = 4 ft. 8i in. = 4 708, and the narrow gaugeg = 3 it., to find the frog angle D A E, fig. 24 : ^ _ (^8_ — {.^ -f i^) = s — (R + \g — g) = R + i g = ar. comp R + ig — g = ar. comp. Extracting sq. root 2) \ B A C = 87° 50 34 sin. whence the angle B A C := 175° 41 08and the angleD A E = 180° - 175° 51 08 = 4 18 52 , the answer re-quired. (TO BE CONCLUDED.) A DOUBLE TRUCK COMPOUND LOCOMOTIVE. The accompanying illustration is from a photograph ofa locomotive of exceptional type, recently built by theBaldwin Locomotive Works, in Philadelphia, forthe Sinne-mahoning Valley Railroad, a short lin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
