Specification of William Simson Young : steam boiler furnaces.

  • Young, William Simson.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Simson Young : steam boiler furnaces. Source: Wellcome Collection.

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    V4 A.D, 1855.—N° 1195. Specification. ■ Young's Iwpts. in Steam Boiler Furnaces^ ^ in the Prevention of Smoke therein, ... chamber, the furnaces being fired in rotation. The supply of air may either be ^ made regular, by a permanent adjustment of the induction valve or valves, or it i may be increased at the periods of firing by self-acting mechanism, which will i cause it to be gradually diminished as the production of green smoke from the i I newly supplied fuel is lessened. 5 f ^ And in order that my said Invention may be properly understood, I shall J Up > now proceed to describe the explanatory Figures on the Sheet of Drawings I hereunto attached. I ^ f Figure 1 on the Sheet of Drawings is a front end view, half in transverse M R' ( section and half in elevation, and Figure 2 is a vertical longitudinal section, of 10 i ^ i a cylindrical stationary steam boiler and furnaces, shewing one convenient mode | ? of working out my Invention in practice. A convenient mode of applying my ^ i;. said Invention to marine steam boilers is shewn in Figures 3, 4, and 5, on the - same Sheet of Drawings ; Figure 3 being a front end view, half in transverse ? section and half in elevation; Figure 4, a vertical longitudinal section; and 15 ^ fev Figure 5, a horizontal section ; each half of it being taken at a different level. K The stationary boiler, represented in Figures 1 and 2, is cylindrical in form with P flat vertical ends, and is fitted with two internal furnaces A, B. The grate bars p- of these furnaces extend backwards in parallel cylindrical flues as far as the bridge C, Figure 2, behind which is the mixing or combustion chamber D for 20 the gases. This chamber at its front or bridge end is of sufficient width to join both furnaces A, B, but it is conical in form, gradually diminishing in width to the line E, where it becomes circular in transverse section, and coincides with the cylindrical flue F, extending to the back end of the boiler, and commu- ^ nicating with the flues G surrounding the boiler, and formed in its brickwork 25 ^ casing H. The gases from the two furnaces thus become commingled in the ^ K chamber D ; and to assist in effecting their thorough combustion, I introduce a P supply of atmospheric air into this chamber. For this purpose, pipes I are P j I passed through from the front of the boiler to the chamber D, and these pipes J f being surrounded by the water in the boiler, the air entering through them is to 30 fc ^ a certain extent heated by tlse water, so^as to have less tendency to reduce the ‘ temperature of the gases in the chamber D. I find in practice that a regular * and uniform supply of atmospheric air answers the end in view sufficiently well, and if the pipes I are of a size justly proportionate to the requirements of the furnace, no valvular or supply regulating mechanism need be fitted to them; 35 but where found necessary or desirable, any suitable arrangement of valves may be used, either for adjusting a regular supply, or for admitting more air at one time than at another, as, for example, when fresh fuel is put into either furnace.