US896987A - Ignition device for gas-burners. - Google Patents

Description

No. 896,987. PATENTED AUG. 25, 1908.

' G. W. GRAVES. IGNITION DEVICB FOR GAS BURNERS.

APPLIOATION FILED OCT. 21, 1907.

GEORGE W. GRAVES, OF NEW YORK, N.

Y., ASSIGNOR TO THE GRAYES SUPPLY CO., OF NEW YORK, N. Y.

IGNITION DEVICE FOR GAS-BURNERS.

No. &96,987.

Specfication of Letters Patent.

Patented Aug. 25, 1908.

Application filed October 21, 1907. Serial No. 398312.

To all whom it may concem;

Be it known 'that I, GEORGE W. GRAvEs, of New York, in the borough of Manhattan and State of New York, have invented certain new and useful Im rovements in Ignition Devices for Gasurners; 'and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawdevice applicable' to most types of stoves now in use by the aid of which a plurality of burners may be simultaneously or independently ignited With safety by the operator from a readily accessible point.

To these and other ends the invention consists in certain improvements and combinations .of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

in the drawings: Figure 1 is a longitudinal sectional view of the oven ortion of a gas range showing an ignition evice as applied to an oven burner. Fig. 2 is a horizontal section on the line 2 --2 of Fig. 1, showing the burners and attachments, portions of the oven bottom being broken away to show a top plan view of the ignition device, Fig. 3 is a transverse section of the ignition device taken on 'the line 3 ---3 of Fig. 1, and Fig. 4 is a similar View taken on the line 4 4 My present invention is particularly, though not eXclusively, adapted to gas ranges of the type described and shown in a patent granted to me and another as joint nventors and dated April 22, 1902, No.

698,()09, which type embodies a Construction wherein explosions due to escaping gas are prevented in the oven by arranging the ignition opening of the burners within the oven chamber so that the door thereof must be first opened before the match can be a plied. I have, therefore, illustrated in t e drawings an oven and adjoining portions of a stove of conventional design wherein 1 indicates the oven ohamber to which access is had through a door 2, located n the range front 3, the bottom or floor plate which constitutes the surface from which heat is radiated being indicated by i. Arranged beneath this plate and below the oven are the burners 5 which may be of any desired construction, those illustrated being of the usual tubular form, extending transversely of the range or parallel to the front thereof and provided Withapertures 17 for the emission of the gas. The burners are supplied with gas emitted from .the ipes 6 leading from a main supply 7, the ow of gas being controlled by cocks 8, all of which parts may be arranged as desired.

The ignition device or lighter comprises an inverted U shaped shell 9 adapted to extend in a transverse direction above the burners 5, its lower open side forming a channel for collecting the upwardly rising gas emitted from the burner and directing it to a'suitable point where it may be ignited. The rear end of the channel is closed by a downwardly extending lip 20, and at the rear end of the shell and also at a point above the forward burner are laterally projecting wings 21 which form extensions of the' channel and serve to collect the gas passing outwardly from a plurality of the apertures 17. and to direct it into the main channel of the shell. To facilitate the flow of the gas along the channel the side walls of the latter are tapered, the Wings are inclined and the upper edge of .the channel or top of the shell is also inclined upwardly toward its forward end where the shell curves upwardly and surrounds a restricted opening 11 forming the terminus of the gas collecting channel which communicates With the interior of the oven at the forward end of the chamber through an aperture provided in the floor plate 4. At this The shell 9 constituting the ignitin device is adapted to be located' between the oven bottom and the burners and to be supported by the latter, and to this end the tips of the Wings 21, which project downwardly, are provided with semi-circular vrecesses 10 fitting the upper halves of the burners, and projecting upwardly from the shell at a point intermediate its ends is a lug 15 which coperates with the oven bottom 4 to prevent'the device from being disengaged from the burners. At `its forward end the shell is also provided with a lug 13 which' abuts against the adjacent surface of the front wall 3. The displacement of the device in a direction longitudinally of the burners is prevented by lugs 16 cast inte rally with the burner tubes and arranged t ereon in position to engage the ends of the wings 21.

The apertures 17 of the burners from which the flame jets are emitted, arranged on the under sidcs of the tubes, are suflicient to supply the necessary gas to the channel of the igniting device, but if desired those portions of the burnerslying immediately beneath the shell may also be 'provided with openings in their upper sides as indicated at 18, communicating directly with the channel, a series of such openings being preferably arranged circuinferentially of the tubes at these points. v

In practice'the top wall of the shell is provided with a longitudinally extending centrally arranged groove 19 forming the top of the channel in the shell which leads to and terminates at the opening 11, the 'general arrangement of the parts being such as to give the chamber a slight upward course in this direction so that a .comparatively small amount' of gas passing into the top of the channel will be suflicient to enable the burners to be properly lghted.

In operation the cock 8 controlling the gas in the burner which it is desired to light, or all of them, are turned on and the oven door opened. The gas filling the burner tubes will quickly escape through the burner apertures into the interior of theshell 9 and by reason of its slight specific gravity rise and concentrate in the narrow portion 19 of the channel from whence it will flow immediately in a column to the forward opening 11 and thence upwardly into the oven. When a match is appled at this point combustion instantly takes place throughout the column extending the flame throughout the length of the lighter shell and simultaneously igniting the jets V flowing from any of the burner apertures 17.

Asbefore stated, I do not limit the use of the hghter to an. oven burner of the type shown, although it is a useful adaptation as the floor plate 4,' may be considered the heat radatng surface and the igniting device as leading to any convenient and desirable point for the purposes described.

The gniting device may be conveniently cast n a single piece and readily applied to many different forms of. stoves heretofore constructed.

I claim as my invention:

1. An ignition device for burners for gas stoves having one or more burners, compris ing a tubular shell open on its under side forming a narrow gas collecting channel adaptedto extend over all of said burners, said shell being provided with a' restricted opening in its upper side at 'one end of the channe 4 2. Thecombination with a (gas range comprising a plate forming a ra and burner tubes arranged thereunder having gas jet openings, of' an igniting device comprising a tubu ar shell arranged 'transversely above the burners, said 'shell having an open lower side, the walls of the shell being provided with recesses adapted to receive the burners and also provided with a ating surface restricted opening in its upper side near one cent the front plate, of an igniting device comprising a tubular shell open on its under side throughout its length and arranged transversly of the burner tubes between the lugs thereon, the walls of the shell being recessed at their burners, said she l being provided with a restricted aperture in its up er side registering with the aperture in the oor plate.

4. As an article of manufacture, a device for igniting the oven burners of a gas range, comprisin a shell adapted to be arranged above sai burners having an open channel for collecting gas escaping from the burners and conducting it to a point removed from the burners, said channel bein vided with an opening through whic gas may be ignited.

5. The combination with a gas range having an oven chamber, a bottom therefor provided with a grated opening at its forward edge and burners located beneath said bottom, of an igniting device arran ed above the burners comprising a top wa and deipending side walls provided with recesses said oints of contact with the pro- for igniting the oven burner of a gas range,

comprising a shell having a channel therein open at one end., wings extending laterally from the shell above the burners and serving to collect gas emitted therefrom and direct it into the channel, 'and a lug projecting upwardly from the shell and adapted to engage the oven bottom.

7. As an article of manufacture, a device for igniting'the oven burner of a gas range,

&96,987

rising a shell adapted to be supported &by t e'burners having a top wall and depending side wall s, the latter converging toward leadingfrom the channel and of restricted dimensions relatively thereto.

` 8. The combination'with a gas range having an oven chamber, a bottom late therein provided with an opening at its orward edge and two oven burners located beneath the plate, ofan igniting devie comprising a Shell having a top wall and depending side walls resting upon the burners, said top wall in- 15 clinng upwardly toward its forward end and provided with an aperture located beneath the opening in the bottom plate, an upwardly projeeting lug on the shell engaging said plate and lugs on` the hurners engaging 20 the side walls of the shell.

GEORGE w RAvEsI Witnesses: I I i JOHN EDWARDS, .L. M. STEvENs.

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