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.

    8/14 (page 6)
    Robertsons Improvements in the Consumption or Prevention of Smoke. outside, and prevents the burner from being burnt away. Figs. 9 and 6 represent two different forms of burners which may be employed in place of the one shewn in Fig. 4 ; the air being introduced at P, through the pipe L, as herein-before described. As the air is always in a heated state when issuing from the burner, it will have no tendency 5 to cool the flues, but on the contrary will assist in the generation of the steam. I may here observe, that I do not confine myself to any par¬ ticular form or position of burner, or of the apertures therein, so long as it does not interfere with the draught of the furnace. One or more of these burners or modifications of the same may be placed on the 10 grate bars, which might be made hollow for that purpose, and receive a supply of heated air from the ashpit. Fig. 1 on Sheet 2 of my Drawings represents a horizontal section of a steam boiler furnace with the bars removed, to shew the elevating or balance weight and chains. Fig. 2 is a transverse section of the same taken through the front of 15 the fire bars ; and Fig. 3 is a longitudinal vertical section of the furnace, shewing a portion of the boiler in elevation. This latter arrangement shows the application of my principle of smoke prevention to boiler furnaces with external or lateral flues. In this arrangement the furnace bars are balanced by counterweights A, suspended by the 20 chains B, which pass over the fixed guide pulleys C and D, and are attached at E to the rod E1, which connects the two brackets F, F, secured to the moveable transverse bar G, on to which the front ends of the fire bars rest, as described with reference to the first arrange¬ ment, the opposite ends of the bars being supported by the fixed 25 transverse bar H. The air is admitted round the furnace through the perforated frame I, as herein-before described, and a burner J may be employed similar to that lettered K in Sheet 1 of the Drawings. The air, however, in this case is supplied from the ashpit itself, the mouth of the short supply pipe K being fitted with a self-acting valve or regu- 30 lator L, which is actuated by the descent or ascent of the grate bars. This is effected by connecting the valve L to a short chain M, which is attached to one or both of the elevating chains B, by a cross bar con¬ necting the two chains, or by any other suitable arrangement. As the grate descends with the weight of the newly supplied fuel, the chains B gg