. Railway mechanical engineer . ^^ _%7 A^ S^- Profile of the Union Pacific Between Ogden, Utah, and Evanston. Wyon cent with a 4 degree curve, uncompensated, which is equiva-lent to a grade of per cent on straight track. Recon-struction work is now in progress on this division and allgrades are being reduced to per cent, compensated forcun-ature. The principal object which was kept in mind indesigning the 2-10-2 t\pe locomotives was to make themcapable of handling the same train over the reconstructedline between Ogden and Evanston, that the Mikado t\pe crown sheet and side sheets. T
. Railway mechanical engineer . ^^ _%7 A^ S^- Profile of the Union Pacific Between Ogden, Utah, and Evanston. Wyon cent with a 4 degree curve, uncompensated, which is equiva-lent to a grade of per cent on straight track. Recon-struction work is now in progress on this division and allgrades are being reduced to per cent, compensated forcun-ature. The principal object which was kept in mind indesigning the 2-10-2 t\pe locomotives was to make themcapable of handling the same train over the reconstructedline between Ogden and Evanston, that the Mikado t\pe crown sheet and side sheets. The seam around the firedooropening is also welded. Flexible staybolts are used in thebreaking zone and in the six front rows of stays over thecombustion chamber. At the point where the three upperrows of flexible stays on each side pass through the boilerbarrel, bosses are welded to the sheet in order to prode asufficient number of threads for the staybolt sleeves. Boththe coal burning and oil burning locomotives are equipped. Heavy Freight Lo otive for the Union Pacific Which Develops 2,950 Horsepower locomotives haul on the line east of Evanston, where for 400miles the maximum grade is .81 per cent. The 2-10-2 type locomotives have a rated tractive effortof 70,450 lb. with 285,500 lb. on the driving-wheels, the ratioof adhesion being The total equivalent heating sur-face is 7,045 square feet or 1 square foot for each 10 tractive effort. This ratio indicates ample steaming capac- with Security sectional arches and the coal burners are firedby Street type C stokers. The superheater consists of 45elements and has a superheating surface of 1,262 square piston valves are 15 in. in diameter and arc drivenby Walschaert valve gear which is controlled by a Ragonnetpower reverse gear having both air and steam piston heads, a drawing of which is shown below, are 321 322 MECHAXICAI. VuL. 92. Ko. 6
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
