Specification of Ferdinand Jossa : furnaces and ovens.

  • Jossa, Ferdinand.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Ferdinand Jossa : furnaces and ovens. Source: Wellcome Collection.

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    Jossa’s Tmpts. in Furnaces, Qc., for Preventing Smoke and for Economy of Fuel. cylinder or shoot at the side of the furnace, into which the furl is placed, and from which an inclined channel is formed, whence the fuel falls partly below the boiler on to a fire-proof chamber, when the furl is subjected to dry distillation. The gases evolved therefrom are conveyed under the boiler and 5 serve to heat it, and the coke will fall through apertures on to the fire bars, where it will be consumed without creating visible smoke. A is a receiver shoot or funnel, made of iron, to receive the coals. The fuel falls through the sloping passage B on to a wall built of fire-proof bricks D, which is kept burning hot by the grate applied beneath it. The fuel which covers this 10 heated surface is here subjected to dry distillation, as the access of air is precluded, by means of which the gases escape through the tubes or draughts under the boiler, and leave behind the coke formed by the process. As the gas developement ends firstly among the coals, it is necessary to push forward at certain intervals the coal which lies on the level surface D with the pestle 15 H, so that the coke which is over D falls upon the grate, and fresh coals follow from the shoot. The coke should be spread with a rake over the grate through the door I, where they will be consumed without throwing off smoke. The wall D will be kept burning hot, to facilitate the development of the gases and help to heat the boiler. In order to aid the process of distillation, 20 air may be introduced to the tranversal hollow beam F, which open freely in the brickwork of the boiler or furnace, and which freely admit of air uniting with the gases of combustion. The adjoined Drawing shows the plan of a fire grate, which by a simple construction ensures both a complete consumption and the utmost possible 25 saving of fuel. The arrangement is designed for the fire-place of a simple cylindrical boiler; it may be, however, easily fitted to every fire constructed on bars. It is easily effected and with little expence where the fire rests in front of or under the boiler; should the fire be situated within the boiler it must be removed to the front of the boiler. In the present Drawing the bars 30 which lie in front of and reach under the boiler are six feet long and three feet wide; above them, at a height of two feet, is the arch A, B, built of fire bricks, which is contiguous with the fire room above. Between the bars and this upper arch a horizontal arch C, D, is to be erected, which reaches to somewhat about the middle of the bars. Between this arch, which is only hall 35 a brick thick, and the upper fire hearth remains in the whole width of the bars, consequently three feet, an open space nine inches in height; this space opens in front in a cleft of seven inches high and three feet long, through which the walls from the reservoir E reach the arch C, D. A fox of plate iron F, which closely fits the aperture in front, being provided with rollers and