Specification of James Neville : furnaces for steam boilers, &c.

  • Neville, J. (James)
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Neville : furnaces for steam boilers, &c. Source: Wellcome Collection.

    4/8 (page 2)
    Nevilles Improved Apparatus or Furnace for Economizing Fuel, §c. NOW KNOW YE, that in compliance with the said proviso, I, the said James Neville, do hereby declare the nature of the said Invention, and the manner in which the same is to be performed, are fully described and ascer¬ tained in and by the following statement thereof, reference being had to the Drawing hereunto annexed, and to the figures and letters marked thereon, 5 that is to say:— According to the most usual construction of furnaces applied to steam boilers and to other vessels for generating steam, and for heating and evaporating fluids, the fire bars are solid and the fuel is placed on them, the gases and smoke evolved rise above the fuel, and passes away to the flue and chimney. 10 There have, however, been attempts in some arrangements of furnaces to pro¬ duce a downward draft through the fire bars, in order to cause the vapours distilled from the fresh fuel (which from time to time would be laid on to the ignited fuel on the fire bars) to pass through the ignited fuel on the bars; but such arrangement of furnace has not proved successful, owing to the 15 destruction of the fire bars. And further, there have been furnaces con¬ structed with an improved draft with hollow fire bars. Now the object of the present Invention is to construct furnaces of steam boilers, and gene¬ rators, and vessels for heating and evaporating fluids by combining downward draft with hollow fire bars, such hollow fire bars being in connection with the 20 boiler or vessel to which the furnace is applied, in order that the fluid to be opeiated on may circulate freely in the fire bars and take heat therefrom. By this means, in addition to the advantages of preserving the fire bars, the smoke and gases evolved from the fresh fuel laid on to the fire will, in consequence of passing downwards by the downward draft between the fire bars, come in 25 contact with and be subjected to the ignited fuel on the fire bars, and by such means be consumed. It will be evident to the practical engineer that, as there an, varied an alignments and constructions of vessels for generating steam and heating and evaporating fluids, there will be a necessity for varying the anan0ement of furnace with hollow fire bars with downward draft according 30 circumstances, which, however, the practical engineer will readily arrange has examined this my Specification, and the Drawing hereunto ! .. eC*’ ^ich repiesents my Invention applied to one arrangement of steam boder or vessel for evaporating flues. 1 the Figures of the Drawing the same letters indicate similar 35 in tl/ i * em° a SGI^es hollow bars, which are so arranged that the fluid readilv 1 o ^ vessel ^ can circulate freely through the bars a, a, as will Which I ,:rrr° i? CXaminin* the Drawing; c, c, is an arch of fire brick, 1 should be constructed over the fire bars, which becoming highly