Specification of Samuel Hall : apparatus for supplying air to furnaces.

  • Hall, Samuel.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Samuel Hall : apparatus for supplying air to furnaces. Source: Wellcome Collection.

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    HalVs Improvements in the Combustion of Fuel and Smoke. dyer’s pan, brewing copper, or other similar vessel. Figure 3 is a vertical section, and Figure 4 a horizontal section taken through the flame or smoke flue, a is the fire-place ; h, the flue, through which the flame or heated gasses pass (as shown by the arrows) to the chimney c; d,d, are a series of pipes or 5 passages through the brickwmrk into the fire-place and below the flame or smoke flue, for the purpose of distributing a supply of air in jets or streams among the smoke or inflammable gases to effect their combustion. Air may be taken immediately from the atmosphere or it may be heated by a system of pipes placed in the flue leading from the pan or copper to the chimney, 10 bringing it in at the sides of the flue by a method similar to that herein described, as applied to the waggon-shaped boiler. Figure 5 represents my Invention as applied to the furnace of a baker’s oven, or to any other description of furnace, a represents the fire-place; h, the ash-pit; c, c, the air passages, running parallel with the fire-place; and 15 d,d, the apertures, which may be of any proper shape, and of which there may be any suitable number, for introducing jets or streams of air, either from the atmosphere or previously heated, into the furnace; e is the opening at the end of the furnace to convey the flame from it to the bakers’ or any other description of oven. 20 In the Specification of my before-mentioned Patent of One thousand eight hundred and thirty-eight, I described a plan for supplying air to the furnaces of marine steam engine boilers and other boilers of a similar construction, by inserting within the water spaces bent pipes to convey jets of air from the ash¬ pit to the fire-place above the fuel; the upper ends of these pipes open into 25 the fire-place and the lower ends into the ash-pit. The pipes are therein shown as secured in their places, so as to make a water and steam joint wit the metal of the boiler, by means of double nuts. One of the improvements relating to such apparatus in this my present Patent, consists in an improved mode of securing such pipes. In lieu of the double nuts above mentioned, 30 I employ conical ferrules driven tightly into the open ends of the tubes, in the same way as is done in securing the fire tubes of locomotive boilers. This improvement is shown in Figure 6, wherein a represents the fire-place; 5, the ash-pit; c, c, the air tubes, placed in the water spaces, with their upper ends opening into the fire-place and their lower ends into the ash-pit; and d, d, are 53 the ferrules driven into the ends to press them into close contact with the boiler plate to make secure joints. Figures 7, 8, 9, and 10, represent the apparatus which comprises my improvements, as applied to a tubular boiler of a locomotive steam engine.