US472144A - Gas-stove - Google Patents

Description

(NoModeL) J. L. SHARP.

GAS STOVE.

No. 472,144. Pat ented Apr. 5, 1892.

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NITED STATES Erica.

PATENT JAMES L. SHARP, OF NEW ROCHELLE, NEW YORK.

G A S S T O V E SPECIFICATION forming part of Letters Patent N 0. 472,144, dated April 5, 1892. Application filed May 29, 1891. Serial No. 394,470. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES L. SHARP, a resident of New Rochelle, county of Westchester, and State of New York, have invented a new and useful Improvement in Gas-Stoves, of which the following is a specification.

My invention relates to an improvement in gas-stoves, and has for its object to improve the construction of the burner for said stoves and to supply the same with a proper quantity of air.

The invention consists of the new combinations and construction of parts, hereinafter more fully specified and claimed.

In the drawings, Figure 1 represents a sectional view taken on the line 1 1, Fig. 2, of my improved gas-stove. Fig. 2 is a plan view of said stove, the burner-plate being shown partially broken away. Fig. 3 is an enlarged view, partially sectional, of a portion of the upper part of my improved gas-burner. Figs. i and 5 are plan views of two forms of my improved burner-plate, and Fig. 6 is a cross-section on the line 6 6 of Fig. 5.

A is the outside casing of the gas-stove.

B is the gas-pipe, provided with a suitable screw-nozzle a.

D is a strap-shaped or similar band of metal serving to support the burner within the casing A of the stove. In fact, the nozzle ais by preference screwed into this strap or plate D, as shown.

E are air-pipes, each open at the upper end for the admission of air and each joined at the lower end to a hub 19, which is screwed upon or otherwise connected with the nozzle a.

F is the mixing-tube screwed or similarly attached to the screw-socket cl, formed at the junction of the air-pipes E directly above the nozzle a. It will be seen that each air-pipe E is entirely on one side of the mixing-tube F, j oiningit at the lower end. By this arrangement many advantages over an air-pipe surrounding the miXing-tube are obtained.

G is the burner screwed or otherwise securedto the upperend of tube F. This burner carries the wire-gauze e and the burner-plate H. This burner-plate I prefer to form, as shown in Figs. 5 and 6, with curved slots f, the metal near each slot being reinforced by projecting ribs g. The said burner-plate H may, however, have the slots f straight, as in Fig. 2, or cross-shaped, as in Fig. 4, the ribsg being either on the under side, as in Fig-6, or on the upper side, as in Figs. 2 and 4. When the ribs gare on the under side, as in the preferred form shown in Fig. 6, a hollow or cavity h is formed between them, which cavity serves to direct the fuel downward and outward before it enters the slots f. The top of the plate H is provided with two or more wedge-shaped projections i,which are adapted to slide under or to be caught by lips or lugs j on the rim of the burner, and with a notch K of a size and shape sufficient to admit of the plate H being withdrawn when the wedgeshaped projections 2' are no longer under the lips j and when the notch K and one lip j coincide.

One or each of the air-pipes E may be provided with dampers J or similar contrivances to regulate the amount of air to be admitted to said pipes and mixed with the gas.

The operation is as follows: Gas enters the pipe B and passes upward into the mixingtube F, together with air from the air-tubes E. From the mixing-tube F the gas and air thoroughly mixed in suitable proportions pass into the burner G and thence through the slotted burner-plate H. The burner-plate H, by reason of the shape of the slots and the concavity of its under surface in the preferred form shown in Figs. 5 and 6, throws the fuel upward in curving form. The reinforcement of the slots f by the ribs or ridges g protects said burner-plate from warping or cracking under the heat imparted to it by the flame. The wedge-shaped projections c of this burnerplate, together with the lipped projections j of the burner and the notch K, furnish a simple and durable means for the easy removal from and retention of the burner-plate within the rim of the burner. This facilitates the cleansing of the burner and permits of the use of diversely-slotted burner-plates for special purposes and for the renewal of the burnerplate should the same wear out. As to the air-pipes one or more may be used. These air-pipes being joined to the socket d and hub I) admit of the casting of a number or series of such pipes with little cost, and the whole arrangement may be fitted up or taken apart with little trouble or skill. The separate pipes E E admit of the use of dampers, which could not be used in the ordinary annular airsupply pipe. The object of these dampers J is to regulate the amount of air to be mixed with the gas according to the pressure of the gas. One or more of said air-pipes may be provided with such a damper, and thus one or more of said air-pipes may be wholly or partially shut off. In my present improvement the flow and mixture of the air with the gas is greatly facilitated. The action of the burner G creates a suction which draws the air downward through the pipe or pipes E into direct contact with the gas at a point directly beneath the pipe F.

Having thus described my invention what I claim is- 1. The combination of one air-pipe E or more, having hub Z; and socket (1, with the gaspipe B and mixing-tube F, said air-pipe being open at the upper end and arranged wholly on one side of said mixing-tube F and communicating with the lower end thereof, and with the burner G and burner-plate I-I, substantially as and for the purposes set forth. 2. The combination of one air-pipe E or more, having hub Z) and socket d,witl1 the gas-pipe B and mixing-tube F, said air-pipe being open at the upper end and arranged wholly on one side of said mixing-tube]? and communicating with the lower end thereof, and with the burner G and burner-plate II, and with one or more dampers J in said pipe or pipes, substantially as and for the purposes set forth.

JAMES L. SHARP. Witnesses:

HARRY M. TURK, L. M. WAcnscHLAcEn.

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