. American engineer . -8-2 Type Locomotives for the Rock Island. end is 90 in. The 2Y^ in. boiler tubes are spaced with ^, and the 36 superheater flues are arranged in four hori-zontal rows in the upper part of the boiler. The dome is setwell forward, being on the middle course, and is of steel plate,flanged from one piece. Flexible staybolts to the number of550 are used in the The crown and side sheets are allin one piece, as is also the outside wrapper sheet. Vanadium steel frames were specified. The main frames have relief valves, as well as drifting valves. The piston
. American engineer . -8-2 Type Locomotives for the Rock Island. end is 90 in. The 2Y^ in. boiler tubes are spaced with ^, and the 36 superheater flues are arranged in four hori-zontal rows in the upper part of the boiler. The dome is setwell forward, being on the middle course, and is of steel plate,flanged from one piece. Flexible staybolts to the number of550 are used in the The crown and side sheets are allin one piece, as is also the outside wrapper sheet. Vanadium steel frames were specified. The main frames have relief valves, as well as drifting valves. The piston rod is ex-tended through the front cylinder head, and its crosshead iscarried by a self-centering guide. The Ragonnet power reversegear, operated by compressed air, has been applied to the fortybuilt by Baldwins. The other ten have a screw reverse geararranged as is shown in the elevation drawing. The tender is of the Vanderbilt type, and carries 9,000 water and 16 tons of coal. The frames have plate steel end. 36 Flues, si Ho/es S^ohm. rJuJ^-. 84x108- V\w-% Sections of the Firebox and Boiler of the Rock Island Mikados. a width of 6 in., and a depth of 7 in. over the pedestals. The sills, and the trucks have cast steel side frames and bolsters. front rails are single and are cast as an extension of the main The general dimensions, weights and ratios of the Baldwin frames. They measure 6 in. in width and are 11 in. deep at the locomotives are given in the table below. The others differ connection of the cylinders. As a further source of strength slightly in respect to weights and heating surface. They have there is a rib on the bottom of the frame 2 in. in width and 4 238,000 lbs. on drivers, 52,500 lbs. on trailer truck and in. deep, extending the length of the cylinders. lbs. on engine truck. This gives a total weight of 320,000 lbs. 566 AMERICAN ENGINEER. Vnu. 86, No. 11. There are 234 2]4 in- tubes and the total heating surface is4,215 sq. ft., of whi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
