Specification of Constant Jouffroy Duméry : smoke-preventing apparatus.

  • Duméry, Constant Jouffroy.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Constant Jouffroy Duméry : smoke-preventing apparatus. Source: Wellcome Collection.

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    Provisional Dummy's Improvements in Smoke-preventing Apparatus. disproportion between the gases produced and the arrangement of the fire¬ place for burning the fuel and such gases; thus, the temperature of the boiler and furnace may be better sustained than when the fresh coal is heaped on the fire, which necessarily has a cooling effect. Fig. 1, in the accompanying Drawings, is a portable grate. The fresh 5 coal is laid on the lower grate A, and is pushed forward, so as to lift the burning coal in the upper grate B, and to be exactly under it in the passage of the oxygen; the contact of the heat distils it, and the gases that are emitted from it, only being able to escape by passing though the upper layer of coal ignite, and are changed into a pure flame. Fig. 2 is a similar grate 10 for fixed fire-place. Fig. 3 is a grate suitable for the kitchen, &c. The coal, as before described, is placed in the front part, and, as required, thrown into the grate B, at the same time lifting up the burning coal. Figs. 4 & 5 represent the fire box of an ordinary steam engine of large or 15 small dimension, with a false grate A, A, and a feeding box C, Fig. 5. The false grate A is passed under the lighted coal, and then raised, & while it is in this position the fresh coal is thrown under the false grate at bt by in the ordinary manner, or by a box C, filled beforehand. The false grate A is withdrawn, and the box C is left in the fire-place until the dis- 20 tillation of the coal be partially effected ; the box is then withdrawn and the gases continue to pass through the burning coal. Fig. 6 represents a fire box for stationary or locomotive engines. The coal is thrown in the direction of the arrows by means of a screw or other suitable contrivance into the grate B under the burning coal. The fire-place, Fig. 7, is 25 a stove with double grate, each part of which takes by turns the position of the other; the fresh coal is placed on the lower part A1, which is raised after having taken away the ash box B, & when the fresh coal is under the grate A, the bars of the latter are withdrawn, so as to place in contact the fresh and the burning coal. 30 SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said Constant Jouffroy Dumery in the Great Seal Patent Office on the 18th July 1855. TO ALL TO WHOM THESE PEESENTS SHALL COME, I, Constant Jouffroy Dumery, of Paris, in the Empire of France, and of 32, Essex Street, Strand, London, send greeting. 35