. American engineer and railroad journal . Fig. KINGSLEY BOILER, 1883. .... I in 2 !/■ Kan. Kingsley brought out an internal fire-box and Hue boiler(fig. 15) with stayed sides and crown sheet, and vertical tubesdropped from the latter, being a slight modification of Mar-shalls British patent of 18G1. Allan Stirling exploited another form in Canada, called theField-Stirling boiler (fig. 16), joining to the closed tube unit,bent tubes and staved surfaces, with a wrought-metal mud-drum at the bottom, placed in the most advantageous positionfor both interior and exterior Fig. 1
. American engineer and railroad journal . Fig. KINGSLEY BOILER, 1883. .... I in 2 !/■ Kan. Kingsley brought out an internal fire-box and Hue boiler(fig. 15) with stayed sides and crown sheet, and vertical tubesdropped from the latter, being a slight modification of Mar-shalls British patent of 18G1. Allan Stirling exploited another form in Canada, called theField-Stirling boiler (fig. 16), joining to the closed tube unit,bent tubes and staved surfaces, with a wrought-metal mud-drum at the bottom, placed in the most advantageous positionfor both interior and exterior Fig. 16.—THE ALLAN STIRLING BOILER. Photographs Usutd hij tht Inventor. The failure of the closed-end tube as a unit of heating sur-face has been accelerated by the inadequate-facilities for circu-lation. The incoming current of water has to fight its wayin against the outgoing current of steam and water, slightlymodified where inner circulation tubes or diaphragms are used ;and in all cases the tendency is to deposit the scale-formingmaterial at the ends of the tubes where the current slowsdown, due to its change of direction, with the inevitable resultof burning out. Nearly all of the above boilers are practically out of themarket. Can any success be expected by re-inventing in any newcombination this unit of a closed-ended tube ? It has been tried and failed in the following positions : HORIZONTAL. Bv Fletcher 1869 Babbitt 1869 Plambeck & Darkin 1874 Hazleton 1881 Corliss 1882 INCLINED FROM HORIZONTAL. By Stevens 1805 Miller 1870 • Kelley 1876 By Joly 1857 Merry w
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
