US1841399A - Automatic lighter for gas stoves - Google Patents

Description

Jan, 19, 1932, J. l.. BRIGHT AUTOMATIC LIGHTER FOR GAS STOVES Filed March 6, 1951 2 Sheets-Sheet 1 Mmmm"filfulnfnmfllm aan. i9, 1.932. J BR|GHT 1,841,399

AUTOMATIC LIGHTER FOR GAS STOVES Filed March 6. 1931 2 Sheets-Sheet 2 @43M W Q-/f Patented Jan. ie, 1932 UNITEDy STATES PATENT OFFICE JESSE L. BRIGHT, OF. GICERO, ILLINOIS., ASSIGNOR TO CROWNfSTOVE WORKS, OF CIGERO, illflldl'aINOIs, A. CORPORATION OF ILLINOIS AUTOMATIC LIGHTER FOROAS STOVES Application led latch 8,- 1931. Serial 170.520,574.

This invention relates -to automatic lighters used in connection with gas stoves.

Gas stoves usually include a series of burners having mixing tubes extending forwardly to a manifold located in the front part of the stove. The burners are controlled y the usual hand-operated valves connected o the manifold. For manyyears, pilot light burners have been used in4 gas stoves for igniting the gas but such pilot lights were controlled by a separate valve and, in order to ignite the gas at any burner, it was necessary to open the burner valve and also the pilot light valve. The pilot light normally burned with a low flame and, upon`the opening of its valve, the pilot flame was flashed, that is, it was projected outwardly toward the burners.

With such prior constructions, if the ame at any burner was extinguished, the gas could not be re-ignited without again opening the pilot valve. Such constructions are objectionable because frequently burner flames are accidently extinguished by boiling liquids running over the sides of cooking utensils and the escaping gas is not always detected immediately. It is, therefore, desirable t0 have means for automatically igniting any gas escaping from any one of the burners.

It is also well known that gas valves are very attractive to childrenof tender years who are sometimes actuated by inquisitiveness rather than judgment. In such cases, serious accidents maybe averted by the automatic lighting of the gas as soon as any one of the burner valves is opened.

The main objects of this invention are to provide a gas stove having means for automatically igniting the gas immediately upon the opening of 'any one ofthe burner valves; to provide an automatic lighter which automatically re-ignites the burner flame after it has been accidentally extinguished; to provide an automatic lighter having an improved form of pilot; and to provide improved conductor means for conducting to the pilot gas issuing from the burners, whereby the gas may beautomatically ignited without flashing the pilot iame.

Anillustrative embodiment of this invenplan of a automatic Fig. 5 is a fragmentary bottom plan of the pilotand conductor.

Automatic lighters embodying this invention may be used on gas stoves of many different types and, therefore, the enclosed drawings illustrate only those portions of a stove which will be helpful in apprehending the invention.

In the form shown, the stove includes a burner top comprising a cast metal frame 1 having a rim 2 for supportingthe usual removable grates 3. y Extending along one end of the stove, is a supplyl pipe 4 connected to a gas-.manifold 5, which is located below the forward end of the frame 1'. Suspended fromY 'the manifold 5, are the customary valves 6" having handles 7 and rearwardly projecting nozzles 8. Supported onthe frame 1, is a lpair of horizontal rods 9, which support a pair of rear burners '10, a pair of front burners 11 and a simmer burner 12 having mixing tubes 13, 14, and 15, respectively, eX- tending forwardly to the valve nozzles 8.

The improved automatic lighting means 4herein shown includes a pilot tube 16 having its forward end communicating with the manifold 5 and having a closed rear end supported in a bracket 17 secured to the frame 1. Formed in the pilot tube 16, is a pair of transversely disposed slits 18 providing the gas outlets for the pilot flames. One of these slits is located betweenthe two rear burners' and the other slit .is located between the front burners. A set screw 19 at the forward end of the pilot tube is adapted to control the amount of gas entering the tube for regulating the size of the pilot flames but the valve heretofore provided for flashing the pilot has is ignited within the .been omitted. The two pilot' lights, when once adjusted, are intended to burn with uniform ilames without any Hashing, because the amount of gas passing through the lpilot tube is not increased when the burners are automatically ignited. t

Disposed, directly above the pilot tube, is a plate 20 having its rear end supported on the bracket 17 and its front end supported on a bracket 21 secured to the frame 1 Bolts 22 may be used for detachably securing the plate 20 to the brackets.

The plate 20 is preferably a metal casting. Integrally formed on the'plate 20, is a pair of depending hoods 23 located directly above the slits 18 to form chambers for the pilot iames. The lower edges of the hoods 23 are recessed, as shown at 24, so as to receive the pilot tube. Integrally formed on each of the hoods 23, is a pair of laterally extending arms of inverted V-shaped cross section which provide channels 25 for conducting to the pilot hoods 23 gas issuing from the burners. The u per wall of each hood is tapered downwaxiilly to form a conical deflector 26. Formed in the side walls of the hoods adj acent the upper ends thereof, are draft openings 27 so as to permit the freepassage of gas from the burners to the pilot lights.

Formed in the upper wall of the mixing tube 15. is an aperture 28 which is located directly below one of the channels 125 and through which gas passes to the front pilot light for igniting the simmer burner. In the rear wall of the channel 25, which is located directly above the mixing tube 15, is an opening 29 through which the' Hame passes outwardly from the channel for igniting the simmer burner;

Formed oneach of the main burners `1O and 11, is a boss 30 having-a central aperture 31 located adjacent the outer end of the adiacent channel25. The upper end of each? boss 30 is tapered as shown at 32 so that any liquid dropping onto the boss will be drained" away from the central aperture. Y In operation, the gas issuing from the pilot slits 18 is ignited so as to provide two pilot lights which burn continuously with a low uniform flame within the two hoods 23. To ignite the gas atany one of the main burners, the corresponding valve 6 is opened. When the burner valve is opened, some of the gas passes through the outlet 31 and is conducted by one of the channels 25 tothe pilot flame within one of the hoods 23. When the gas hood 23, the flame passes outwardly along the channel 25 and ignites the gas issuing from the top of the open burner. As soon as the` gas is ignited at the burner, it ceases to flow through the channel 25.

To light the simmer burner, its valve is l opened and some ofthe gas entering the mixing chamber-15 passes through the outlet 28 and is conductedto the front pilot light by the channel 25 located above the tube 15. y When the gas is -ignited by the front pilot, the flame travels outwardly through the channel and passes rearwardly through the opening 29 for igniting the gas issuing from the simmer burner.

. With this-improved construction, the lighting is entirely automatic upon the opening of any one of the burner valves. Moreover, if the flame at any burner is accidentally extinguished, as for instance by liquids from the cooking utensils, the gas issuing from such burner will be automatically and immediately re-ignited.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that'certain details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. `A stove comprising a gas burner, a pilot, a hood surmounting saidpilot, and means providing a channel for conducting to said hood gas issuing from said-burner, said hood having a top wall tapered downwardly toward said pilot to provide a deflector.

2. A stove comprising a gas burner, a pilot, a hood surmounting said pilot, and means providing a. channel for conducting to said hood gas issuing from said burner, said hood having draft passages formed therein and having a top 'wall tapered downwardly toward said pilot to provide a conical detlector.

' 3. A stove comprising a pilot, a pair 'of gas burners, one of said burners having a fuel mixingA tube located between said pilot and the other burner, said tube .having an aperture therein, and means providing a channel `for conducting to said pilot gas issuing from said aperture and said other burner.

4. A stove comprising a pilot, a pair of gas burners, one o'f said burners having a fuel mixing tube located between said pilot and the other burner` said tube havingan aperture therein, and means providing a channel disposed above said mixing tube for conducting to said pilot gas issuingfrom said aperture and said other burner.

5. A stove comprising a main gas burner, a pilot, a simmerfburner having a mixing tube located between said main burner and'said pilot, said tube having an aperture therein, and a channel located above said mixing tube and extending between said pilot and said main burner for conductingto said pilot gas .issuing from said aperture and said main burner.

6. A gas stove comprising a pilot, a pair lad pilot and one of said main burners, said tube having .an-aperture therein, and means providing a pair of channels for conducting to said pilot gas issuing from said main burners 5 and from said a erture.

Signed at Chlcago this 4th day of March,

I JESSE L. BRIGHT.

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