US658432A - Smoke-consuming apparatus. - Google Patents

Description

No; 658,432. Patented Sept. 25, I900. H. L. FLEMING.

SMOKE CONSUMING APPARATUS:-

(Application filed May 16. 1900.)

(No IodeL) INVENTOR:

ATTEST:

; ATENT Fries.

IIENRYL. FLEMING, OF NEW YORK, N. Y.

SMOKE-CONSUMING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 658,4 dated September 1900- Application filed May 16, 1900. Serial No. 16,845. (No an.)

To all whom it may concern:

Be it known that I, HENRY L. FLEMING, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Smoke-Consuming Apparatus, of which the following is a specification.

This invention relates to that class of devices designed for the consumption or prevention of smoke when operated in connection with furnaces of steam-boilers, thereby economizing fuel, and is more particularly adapted for locomotive-boilers, though not restricted thereto; and it consists in the methods employed to control the admission of the required steam-injected air-blasts, all as hereinafter more fully described, my objects being to simplify the construction of apparatus and to dispense with such portions previously employed which have necessitated frequent renewals by reason of rapid deterioration.

In the accompanying drawings, Figure 1 is a sectional side elevation of the furnace of an ordinary locomotive-boiler. Fig. 2 is a plan View of same, taken below the dotted line X X, shown in Fig. 1; and Figs. 3 and i show modified forms in which it is possible that my in vention may be applied, the latter being an enlarged or detail View of a proposed coveringblock.

Similar letters of reference indicate like parts throughout.

The letter A represents generally the boiler, B the furnace or fire-box, O the grate, D the ash-pan, and E the tines, all of which may be presumed to be of the usual and ordinary forms of construction. In the water-leg F, forming part of the rear wall of said furnace, I insert in a suitable manner a series of short tubes G, the number of same depending upon requirements, these said tubes not projecting within furnace, as heretofore customary, but simply serving to form orifices to provideducts or passages for the admission of the steam-injected air-blasts before mentioned. 7

By H is represented the usual manifold or steam-supply pipe, having suitable communication with the steam-space of boiler, regulated by properly-located valve, and which has inserted therein small branch pipes or nozzles h, corresponding in number to the airducts G, for the purpose of producing forced draft through said air-ducts, as shown in Figs. 1 and 2.

Within the furnace, as indicated by letter J, is located the usual firebrick arch, composed of transverse slabs and which, as customary, are placed so that a narrow opening is left between the rear of arch and flue-sheet K of boiler. Crossing this space, directly above the air-ducts G, forming intervals Z, I propose to place blocks or covers M, of fireclay or other suitable material, which may be retained in position by being notched into the rear slab of arch and by lugs n, projecting fromsaid flue-sheet, shown. As a modification of the above arrangement, the said arch may be composed of several slabsj of the usual pattern, but having instead the rear slab j, with the covers M projecting therefrom and forming integrally a part of same, as shown in Fig. 3. As a still further modification the form of block M" shown by 4 may be used for the proposed covering purposes.

In describing the operation of my improved device it is unnecessary to explain the wellknown functions of the baffling-arch or the application of forced air-drafts to assist combustion; but I desire herein to illustrate that as openings must be provided between the said arch and the flue-sheet to admit a portion of the flames and heat to the lower fines of boiler some method must also be employed to prevent the blasts of air from being drawn in the same direction immediately upon entering the furnace and to insure the same being carried forward under the arch sufficiently to become properly heated, so as to ignite and accomplish the complete combustion of the gases This has been attempted heretofore by the adoption of in wardly-proj ect-ing tubes, which, although protected to a certain degree and by various means from the destructive action of the heat, have soon from this cause become unservieeable. By the insertion of the said coveringsin the manner and of either of the forms described the air-blasts will be relieved from the influence of the backward suction above mentioned and be permitted to pass under the arch to efiect the desired results, the fireproof material of which said covers are composed preventing undue deterioration. As considerable variation exists in furnaces of different construction, it is obvious that modified forms of coverings must be used to meet the requirements, and I therefore reserve this privilege, as far as the same may be admissible, without departing .fIODl the nature of my invention, and also, if found more desirable, I propose to substitute compressed air for the steam-jets in producing the forced drafts.

Ihereby disclaim all intention to control any of the well-known features which have been herein described merely to show the connection of my improvements; but

\Vhat I do claim, and desire to secure by Letters Patent, is-

1. In a smoke-consuming apparatus for boiler-furnaces, the combination with a bafflingarch spaced from the flue-sheet of boiler, and ducts or passages leading into furnace through said flue-sheet provided with suitable means for producing forced air-blasts, of the 'furnace, a steam-supply pipe having nozzles to produce forced draft through said airducts, and fireproof covers bridging the space between the arch and flue-sheet immediately above air-ducts, substantially as and for the purpose specified.

Signed at the city of Atlanta, in the county of Fulton and State of Georgia, this 14th day of May, A. D. 1900.

HENRY L. FLEMING.

Witnesses:

WILLIAM J. NALLEY, LEWIS J. LAIRD.

It is hereby certified that in Letters Patent No. 658,432, granted September 25, 1900, upon the application of Henry L. Fleming, of New York, N. Y., for an improvement in Smoke-Consuming Apparatus, an error appears in the printed specification requiring correction, as follows: In line 71, page 1, the reference letter M should read M; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Offioe.

Signed, countersigned, and sealed this 16th day of October, A. D.. 1900.

[SEAL] F. L. CAMPBELL,

Assistant Secretary of the Interior. Oountersigned C. H. DUELL,

Commissioner of Patents.

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