. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . n Mikados. The tender is carried on rolled steelwheels, and the tender trucks are of theequalized pedestal type. The frame isbuilt up, and is placed as low as possible,in order to keep down the center of grav-ity to as low a point as possible. The principal dimensions of both thesetypes of locomotives are given in thetables. The first given is the switcher,the Mikado following. Switcher.— Gauge 4 ft. 8l/2 ins.; cylinders, 26 28 ins.; valves, piston, 13 ins. —Type, straight B
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . n Mikados. The tender is carried on rolled steelwheels, and the tender trucks are of theequalized pedestal type. The frame isbuilt up, and is placed as low as possible,in order to keep down the center of grav-ity to as low a point as possible. The principal dimensions of both thesetypes of locomotives are given in thetables. The first given is the switcher,the Mikado following. Switcher.— Gauge 4 ft. 8l/2 ins.; cylinders, 26 28 ins.; valves, piston, 13 ins. —Type, straight Belpaire; diam-eter, 80 ins.; thickness of sheets, 13/16ins.; working pressure, 200 lbs.; fuel,soft coal; staying, radial. Fire Box.—Material, steel; length, 118 ins.; width,72% ins.; depth, front, 7SJ4 ins.; depth,back, 655^ ins.; thickness of sheets, sides,back and crown tube, £-£ in. WaterSpace.—Front, sides and back, 5 —Diameter, Sl/2 ins. and 2 ins.;material, steel; thickness, Syi ins., No. 8W. G; 2 ins., No. 11 W. G; number, Sj4ins., 36; 2 ins., 234; length, IS ft. Heat-. A. C. Di-verell, S. M. P. GREAT NORTHERN MIKADO TYPE LOO >M< ITIVE Baldwin Loco. Works, Builders. are placed vertically in the are no superheater flues in thelower part of the boiler barrel, as wasthe case in some earlier designs of Emer-son superheaters. In addition to the main throttle, there isan auxiliary valve in the cab, which canbe opened while drifting. This valve hasa V/i-in. pipe connection with the steam-pipe cone in the smokebox. By-passvalves, of a type extensively used on theGreat Northern, are applied to the cylin-ders. This valve consists of a flat plate,which rests on a horizontal seat having fired, the Street stoker being used onlocomotive No. 3087; while the Duplextype is being applied to the more recentengines of this class. Labor-saving de-vices further include a power operatedgrate shaker and a coal pusher on thetender. The auxiliary dome is
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