Specification of William Edward Gedge : smoke-consuming fire-place.

  • Gedge, William Edward.
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Edward Gedge : smoke-consuming fire-place. Source: Wellcome Collection.

    4/8 (page 2)
    Provisional Gedge's Improved Smoke-consuming Fire-place. draught is reversed, so that the smoke produced by the black coal drawn from the top towards the bottom may pass through the incandescent layer. This reversal of draught is obtained by putting the lower part of the fire-place in communication with the chimney. The smoke-consuming fire-place or furnace of this Invention there- 5 fore consists essentially of a case intended to be filled with coal, and presenting at its lower part an opening by which escape the gases drawn by the chimney. In order that the fire-place may be smoke¬ consuming it is necessary that this opening be downward of the layer of constantly live coal. 10 Smoke-consuming fire-boxes for locomotives will only differ from ordinary fire-places in being provided with a transverse partition which retains the fuel while leaving at its lower part the opening necessary to the disengagement of the gas. This partition is composed of two parts, of which one forms a boiler tube and may thus bear contact with 15 the live coal, the other a shifting sheet-iron plate inclined backwards to be less exposed to the fire. In this arrangement the grate is preserved either horizontal or inclined towards the boiler to permit the escape of the ashes. The entire quantity of coal which lies beneath the lower part of the transverse partition therefore burns in the ordinary manner, 20 and it is only as regards the layer of fuel situated upwards from this level that the draught is reversed. The fire must be attended to so that the incandescent mass always rises above the lower edge of the boiler tube. The door of the fire-box is so arranged that it may be opened to a variable extent and thus permit a greater or lesser supply of air. The 25, boiler tube rises to such a height as not to mask the tubes of the generator; it is vertical or slightly inclined, and may have one or more steam pipes. This system is applicable to fire-places of every description, its application to a locomotive engine being given simply as an illustration. 30 SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said William Edward Gedge in the Great Seal Patent Office on the 10th September 186S, TO ALL TO WHOM THESE PRESENTS SHALL COME, I, William