US1279536A - Air-blast oil-stove. - Google Patents

Description

A. M. GRIFFIN. AIR BLAST OIL STOVE. APPLICATION mso NOV.1'2. 1911.

Patented Sept. 24, 1918.

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. UNITED STATES Anva rlm citirrm orlmiirsas c111, irrrssounrl j AIRflBLAST OIL-STOVE.

Lara-53 To all whom it may concern.

Be it known that I, ALVAI-I'M; GRIFFIN, a citizen v.of the United States, -resi'din'g at Kansas City, in the. count y ofdackson and State of Missouri, haveinvented certain new and useful Improvements in Air-Blast 011+. I.

Stoves, of which the following is: a specifi cation.

This :invention' relates-to oil stoves of that class in which the flame from the wick is sub-'- jected to a blast of "air and instantly transformedinto a blue flame generatingnintense heat, and whlch'is characterized bythe use caused to impinge directly on the bottonrof. a cooking vessel, or onto a refractory mantle-'- if illumination is desired;

The object of the invention is to produce a burner adapted for generating intense heat, particularly for cooking purposes, with a liquid as the fuel, a wick for conducting the fuel to the ignition point, and a guided air blast for vaporizing the fuel at the ignition point and supplying oxygen thereto. in sufficient volume to produce a blue flame for impingement directly against the bottom of a cooking utensil or the like.

With these objects in view the invention consists in certain novel and useful features of construction and combinations of parts as hereinafter described and claimed; and in order that it may be fully understood ref-. erence is to be had to the accompanying drawing, in which:-

Figure 1 is a vertical section of an oil stove embodying the invention- Fig. 2, is horizontal section on the line IIII of Fig. 1.

Fig. 3, shows the burner associated wlth a mantle for illuminating purposes.

In the said drawing, 1 indicates a hollow conduit for air, and which in Figs. 1 and 2, is in duplicate and within a stove body 2, and in Fig. 3, is in the form of a pipe lead ng from any suitable point where it wlllbe con- Y venient to locate a blast prOducing device,

such as an electrically-driven fan shown in Figs. 1 and 2, and hereinafter ldentified.

In the top of the stove body are openings.

' Specification ot Letters Patent.

- mon and well known construction and opera Pat n ed. Sort. 24 ,1 1 "Application filed November 12, 1917. seriai m5. 201,854.... I i a overhanging :flamespneaders r6, iand depenol-= mg from] the said-sp'readers.with1n the Wl-Qk tubes are invertedconlcal aIkdQfiECtQIS 7 supported from the tubesibyibraces8z The; tubes 1 are spaced} from the respective; con-.

. duits so that air"mayi pass "upiaround theg 1 tubesas well as through the central; passages thereof, the air? 1 passing up wtl'llollgh said passages 1 being directed: outward 1 overz. the; I H wallsv of :the tubes;and the'iwicksi thereof-.

Thi'sairl is intcrcepted byzthe aiivpassingupe Ward externally 0f the tubes; and a t. the-11p.-

per tends of the conduits are inwardly-tapers, ing Walls 9, to intercept the outwardly traveling flame sto direct' it'upvvard; i

Afan' 10, shown only in Figs. 1 and 2, are ates a blast of air up through the conduits, and to regulate or control the force of the blast each conduit is provided with a valve or damper 11. In Figs. 1 and 2, the fan is shown in the stove body and discharges air directly therein and it then passes up through the conduits of which the chamber of the stove forms a part, and togive access to the fan and admit air thereto, an opening 12 is formed in a wall of the stove and is closed by a screen door 13 to exclude floating particles.

Any suitable means may be employed to operate the motor, the preferred construction being an electric fan connected by wires 14:, to a storage battery 15 of suitable voltage and amperage. p

The preferred method of operating the burner is to apply a lighted match to the Wick in the usual manner, and then instantly turn on the switch 16, controlling the flow of current from the battery. This current starts the fan and a blast of air is instantly created and discharged over and around the wick as explained. If the flame is too high it can be cut down by lowering the wick, the flame under the blast being blue and developing intense heat. The volume of flame can bealso regulated by the adjustment of the valves or dampers, the latter being perhaps more desirable on an illuminating burner than on a stove burner because of the frangibility of the refractory mantle 17, used with the burner when used for illuminating purposes.

WVhen the burner is started it instantly develops great heat and the flame will remain constant without readjustments of the wick, and because of the fact that the air blast comes from below the top of the wick, there is no loss of efficiency by radiation of heat, as the flame impinges directly on the bottom of the vessel as on a gas range.

I claim 2- .1; In an oil burner a flame opening, an air conduit communicating at its upper end with said opening and of contracting diameter at such end, a tubular receptacle for a wick and liquid fuel fitting concentrically in said conduit at the upper end thereof, the upper end of said receptacle and Wick occupying the same horizontal plane as the contracting end of the air conduit; said tubular receptacle in conjunction with the inclosing conduit providing an air passage exterior to the wick, and an inverted conical spreader depending centrally within the passage of the wick receptacle for deflecting air from said passage, upwardly and outwardly against flame from the wick, the spreader also overlying the wick and in conjunction with said conduit, reducing the with said chamber, a tubular receptacle for a wick and liquid fuel, inclosed by said con:-- 7

duit at the upper end thereof, said recep tacle fitting loosely in the conduit to provide an interposed air passage, a conical spreader depending within the passage of said wick tube and also overhanging the wick thereof, a screen covered opening in the wall of said stove chamber, a suit ably driven fan for conducting external air through said screened opening into said chamber at suitable pressure, and a damper for regulating the supply of air accessible to said conduit from said chamber.

In testimony whereof I afiix my signature.-

ALVAH M. GRIFFIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents,

Washington, D. G. r

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