US1802086A - Gas stove - Google Patents

Description

H. C. MAUL GAS STOVE Filed Aug. 19, 1929 INVENTOR ATTORNEY5 Patented Apr. 21, 1931 UNITED stares,

HENRY 0. Mann, or nnrnorr, MICHIGAN, nssrenon .ro DETROIT-MICHIGAN strove COMPANY, on-nn'rnorr, MICHIGAN, A'coRroRATIoN on MICHIGAN Application filed August 19, 1929. 1 Serial No. 386,750. 7

The present invention pertains to a novel gas stove of the more recent type wherein the valves are obstructed from View by a front wall or plate and wherein the Valves are operated by handles at the outer face of the plate, these handles cooperating with index points on the plates to give the appearance of an electric range.

Due to this construction, the front range of 0 the burners is often in close proximity to the air inlets of the mixing pipes leading thereto. Consequently there is an increased danger of back firing. or preignition, particularly when the burner is covered by a large pot, or in the case of closed top stoves or in the use of natural gas.

The principal object of the present invention is to overcome this difficulty and is accomplished essentially by the insertion of a 0 bafile between the burner and the air inlet to the mixing chamber, whereby the flame is suing from the burner is positively prevented from reaching the air inlet. The baffle plate is secured in a convenient and suitable manner to the front plate which also is spaced from the top plate to permit access of air to the air inlet of the mixing tube.

The invention is fully disclosed by way of example in the following description and in so the accompanying drawings in which Fig. 1 is a plan view, partly in section, of a stove constructed according to the invention, and

Fig. 2 is a longitudinal vertical section thereof. 4

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

The stove is shown as comprising a body to 1 supported on legs 2 in the usual manner.

' The body has a front wall 4 extending upwardly nearly as far as the top plate or frame 5 which is supported on the upper edge of the lateral and rear walls of the body, as

' .45; shown more clearly in Fig. 2.

to front wall. These brackets have curved seats xrnlair OFFICE j;

8 inwhich the pipe 6 rests, and the latter is i secured in place by means of straps 9 secured to the inner end of the brackets by means of bolts 10. 7 I

A front set of burners 11 is supported ona rod 12 at the usual distance from the front of the stove. The manifold 6 has connected thereto a corresponding number of gas cocks 13 at suitable'intervals. V Nozzles 14 are coupled to the gas cocks, as at15, and project into the mixing tubes 16 of the respective burners, which tubes are formed withair admitting bell mouths 17 in the usual manner. The mixing tubes of the front burners 11 must be of a definite length to perform their intended function, and in order to provide such length in the construction illustrated, where the manifold is behind the front wall of the body. and the front burner is spaced no farther than usual from the front wall, the tubes are connected to rearward points of the burners, as indicated by the numeral 18. f

Rear burners 19 are also provided, and sup ported on a transverse rod 20, but owing to thedistance of these burners from the front wall 4, a proper length of mixing tube is provided regardless of the point ofattachment to the burners. w

A grating 22 exposing the burners andadapted to support cooking utensils over the burners is mounted in the top plate 5 in the usual manner. The tubes 21 are formed with air admitting bell mouths 23 similarfto the members 17 and in line therewith, as shown more clearly. in Fig. l. "The manifold 6 carries additional gas cocks with nozzles pro riou's adjustments'of the corresponding gas cock, asfully disclosed in my copending application Serial No. 321,787, filed Nov. 26, 1928.1 i V ,j A

The positioning of the gas cocks at the inner side of the front wall has the effect of bringing the bell mouths 17 close to the front burners 11 due to the fact that the latter are not spaced from the front edge of the plate 5 any farther than in the previous constructions.

Due to the close proximity of the air admitting mouths to the front burners, there is an increased danger of back-firing or pre ignition under various circumstances, such as in the use of natural gas, in the use of a closed top over the burner, or by the spreading of the flame when a large vessel is placed over the burner. To overcome this difiiculty, there is rovided a baffle 27 having a doubled or sti ened lower edge 28 resting upon the tubes 16 behind the mouths 17 thereof and lying between the mouths and the forward burners 11 communicating with the corresponding tubes 16. The upper edge of the baffle plate is bent at an an le, as at 29, to lie against the upper ends of the straps 9 in order to be secured thereto by the upper bolts 10.

The baffle plate further has an upper angular rib 30 enga ing the top plate 5 to prevent the burner ame from passing around the manifold pipe to the air admitting mouth 17. It will be a parent that the mouths 17 are thus fully sliielded from the flames of the forward burners 11, while air from the atmosphere has access to these mouths through the space 31 between the front wall 4 and the late 5.

Althoug a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention and indicated by the appended claims.

What I claim is 1. In a gas stove, a front wall having brackets extending inwardly therefrom, a manifold clamped to said brackets, a gas cock depending from said manifold, a burner at the inner side of said wall, a mixing tube communicating with said burner and having an air inlet in close proximity thereto, a nozzle projecting from said gas cock into said inlet, and a baflie inserted between said burner and inlet and secured to said brackets.

2. In a gas stove, a front wall having brackets extending inwardly therefrom, a manifold clamped to said brackets, a gas cock depending from said manifold, a burner at the inner side of said wall, a mixing tube communicating with said burner and having an air inlet in close proximity thereto, a nozzle projecting from said gas cock into said inlet, a bailie inserted between said burner and inlet and secured to said brackets, and an operating handle for said gas cock dispose at the forward side of said wall.

3. In a. gas stove, a front Wall having HENRY C. MAUL.

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