Specification of Joseph Lewis : furnaces of steam boilers.

  • Lewis, Joseph.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Joseph Lewis : furnaces of steam boilers. Source: Wellcome Collection.

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    W. W. Pepys. Lewis Improvements in Dyeing, $c. or chimneys should be exactly of a size or they will draw unequally. Where the apparatus for cooling is not used, there will be room for the dyer to throw the cloth from the roller notwithstanding the chimneys ; but if the situation of the chimneys should prove inconvenient, an additional roller, made very slight, may be put up occasionally a small distance from the boiler, over which the cloth 5 may be conveyed and drop at once on the utensil used for carrying the cloth from the boiler. By the mode above described you have nearly a perpendicular draught, and the flame impinges with an astonishing force against the bottom of the boiler, (instead of being drawn horizontally upon the fire, as is the case where the flame passes into a flue immediately opposite the furnace door,) and as it 10 leaves the bottom clasps its sides. The whole of the boiler is thus exposed to the strongest possible draught and in the best possible direction, being com¬ pletely enveloped in flame. The saving in fuel and (what is often of more consequence to the dyer) in time I have found to be from one-third to one-half over any other mode of the many I have tried. When the water is only required 15 to be heated, as in brewing, an arch forming a dome may be thrown over the boiler, and another boiler, somewhat wider in its dimensions, may be placed upon that arch, rather more distance being preserved between the brickwork and the boiler. In this case the flue or flues may at their opening nearly surround the lower boiler, and must not vary in their dimensions; but the flame and smoke 20 must pass from the upper boiler in the manner before described for the lower one, only the flues may be four or five inches wide where they leave the boiler. In witness whereof, I, the said Joseph Lewis, have hereunto set my hand and seal, this Tenth day of February, in the year of our Lord One thousand eight hundred and two. 25 JOSEPH (l.s.) LEWIS. AND BE IT BEMEMBEEED, that on the same Tenth day of February, in the year above mentioned, the aforesaid Joseph Lewis came before our Lord the King in His Chancery, and acknowledged the Specification aforesaid, and all and everything therein contained, in form above written. And also the Speci- 30 fication aforesaid was stamped according to the tenor of the Statute in that case made and provided. Inrolled the same Tenth day of February, in the year above written. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1854.