Specification of James Robertson : apparatus for consuming smoke, and regulating supply of fuel to furnaces.

  • Robertson, James.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Robertson : apparatus for consuming smoke, and regulating supply of fuel to furnaces. Source: Wellcome Collection.

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    Robertsons Improvements in the Consumption or Prevention of Smoke. fire, and terminating in a species of rose, or series of small holes or apertures, or in a single aperture, above the level of the burning fuel, by which means air will be let in throughout the whole body of the furnace, or a portion of it. Figure 1 on Sheet 1 of the Drawings, represents a horizontal 5 section of a cylindrical steam boiler with internal flue, the greater portion of the fire bars being removed to shew the elevating levers. Figure 2 is a transverse vertical section of the boiler and furnace, taken through the dead plate. Figure 3 is a horizontal section of the boiler, shewing the furnace bars and burner in plan. Figure 4 10 is a longitudinal vertical section of the boiler and smoke-consuming apparatus, taken along the centre line thereof; and Figures 5, 6, 7, 8, and 9, are separate details of the smoke-consuming apparatus, which will be herein-after described. Fig. 1 on Sheet 2 of the Drawings represents a horizontal section 15 of a steam boiler furnace with external flues, the grate bars being removed to shew the elevating mechanism. Figure 2 is a transverse section of the furnace taken through the front of the grate bars; and Figure 3 is a longitudinal vertical section of the same shewing the whole of the smoke-consuming apparatus. The same letters refer to the 20 corresponding parts in the different Figures of the Sheets of Drawings. The boiler A is of the ordinary cylindrical class, with internal cylindrical flue B. The greater number of the bars C are moveable, their inner ends resting upon the fixed transverse support D, whilst their front ends bear upon the moveable support E, which is connected by links F 25 to the pair of balance levers G, G. These levers work on the fixed transverse rod H, which serves as a centre, and are weighted at 1,1, to balance the weight of the grate bars. The moveable portion of the grate is enclosed in a fixed cast iron frame J, shewn in detail at Figure 5. This frame projects downwards a short distance, and is per- 30 forated at the front end and sides by a number of perforations which act as air inlets to supply the air for combustion. By this means, the air entering from the ash pit is divided into a number of thin streams or currents, which impinge directly upon the upper surface of the burning fuel in the grate bars, and thereby assists in the combustion of the 35