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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    4 Jossa’s Impts. in Furnaces, <$c., for Preventing SmoJce and for Economy of Fuel. lined with fire bricks, serves as a piston to push the coals forward on the arch. When the piston is drawn in the direction of G the coals fall from the reservoir E upon the arch C, D; as the piston again draws into its former position it pushes the coals forward, and throws the live coals nearest to the edge D upon the bars, which then are distributed through the fire door. In 5 fire-places of different dimensions from that given in the present Drawing it is easy to accommodate the respective proportions, but it is always necessary for the bridge C, D, to reach to the middle of the bars, and with very short bars it will be even necessary to build somewhat beyond the middle. This smoke¬ consuming apparatus can be fitted to all bar furnaces. 10 There is only this observation to make in regard to boiler fires, puddling furnaces, &c. &c., that in larger fires the height between the bars and the wall must not be reduced to less than fifteen inches. The adjoined plan B, B, which is designed for furnaces where considerable heat is desired, has, in place of the cast-iron bars, channels of fire bricks, which, by means of 15 the damper T, may be shut more or less. These channels are about three inches wide and two inches high, (one brick thick; however, even in other furnaces these channels may be adopted in place of the cast-iron bars. It is to be observed in addition that this apparatus may also be fixed without the reservoir.. 20 For Puddling Furnaces. For further explanation, a plan of puddling furnace is added. The arch A consists of the best fire bricks ; it is slightly arched; the separate stones must be worked with the file, in order to strengthen the arch. An arch being necessary, the upper plane becomes in the middle higher than at the sides; 25 this inequality may be made even by laying over it small pieces of fire bricks with some fire clay, by which means an even plane is obtained. This plane must be covered with a wrought-iron plate, in order to allow the coals to move easier along. Besides this, there is to be fixed in front of the furnace a plate B, having a support, and which serves to receive coals. If desired a 30 reservoir for coals may also be added. The arch must not be built further into the fire room than the distance of the corner (fox) C from the arch D amounts to. The thickness of the arch is four and a half inches (one brick wide), it stands eight inches from the arch of the furnace. The opening for stoking is six inches high by two feet six inches wide; its distance from the 35 corner (fox) is one foot two inches ; from the fire grate one foot six inches. G is the opening above, and F the one below. Having now described the nature of my said Invention, and how the same