US2295001A - Lighter structure for gas burners - Google Patents

Description

Sept- 8, 1942- E. H. MUELLER LIGHTER STRUCTURE FOR GAS BURNERS Filed Aug. 11, 1939 Maffia' 852m, (L7M/w ATToRNEY` Patented Sept 8, 1942v ,UNITED STATES PATENT ori-ICE V 2,29.'s,001v f 2.295.001 l l LIGHTER. STRUCTURE Foa Gas Bomans a Ervin n. Mueller, Grosse Pointe, Mich.

Application August 1.1, 1939, Serial N0. 289,539 4 Claims. (Cl. 15S-*1115) This invention relates to a lighter stru ture for gas burners and it has to do particularly th an arrangement which involves the mounting of ash tubes of an automatic lighter.

It is, of course, an old expedient to place a burner for a pilot ame, which is designed to burn substantially constantly, in some intermediate position as regards the plurality of gas' burners and to extend a so-called flash tube from l a point in proximity to the pilot ame to each -ture and can be cheaply manufactured, and at the same time the tubes have somewhat of a universal mounting, to the end that the burners may be placed wherever desired and the flash tubes disposed in any direction from the .pilot ame'to the burners. Some manufacturers prefer to dispose their burners in accordance with their own ideas, and the disposition of the burners may be different in different gas ranges, but this one lighter structure may be used with any such arrangement. Moreover, the ash tubes extend outwardly radially from the pilot flame and may be disposed to extend in most any direction, and even though the position of a ash tube be changed or varied in any manner, it remains substantially on a true radial line from the pilot ame, with the result that the open end of the ash tubefsubstantlally directly Afaces the pilot flame.

A structure for carrying .out the invention is disclosed herein. f v

Fig. 1 is a general plan view illustrating an arrangement of a plurality of burners with th'e lighter structure associated therewith.

Fig. 2 is an enlarged plan view of a pilot flame housing and the inner ends of the flash tubes, illustrating in dotted lines how a flash tube may be adjusted about the amel Fig. 3 is a cross sectional view taken substantially on line 3-3 of Fig. 2.

Fig. 4 is a detail view showing the formation of the flash tubes.

Fig. 5 is a detail view illustrating th'e formation of the pilot flame housing.

The arrangement shown in Fig. 1 is designed to depict a plurality of gas burners such as might be employed in a gas range,:the stove housing being illustrated at I, the gas supply pipeat 2, and a plurality of burners' 3,.each having a valve I for the control of gas from the conduit 2. To facilitate the illustration of the invention an auxiliary burner 5 is shown to which gas may be supplied also through a valve l. A gas pipe I extends from the conduit 2 for the purpose of supplying gas to the pilot llame.

. Each burner is constructed to receive one end ofaiiaslrtubelarrangedintheusualmanner to supply sas to the tube when gas is Supplied from the corresponding valve 4. As illustrated, the ilash tubes comprise two telescoping tubes so that the length thereof may be varied.

The pipe 6 connectsto an upwardly extending mixer tube Ill (Fig. 3) disposed in a more or less central position, andthe pilot flame housingis carried by the mixerl tube. This housing, as illustrated in Figs. V3 and 5, preferably` takes the form of a sheet metal stampingl of cup shape. having the central portion of its bottom secured to the mixer tubeII) as at ll and having a plurality of secondary air apertures I 2. The housing has a circular wall which extends preferably substantially vertically as illustrated at I3 Land the upper edgehas a bead formation I4 advantageously formed by fashioning the metal back upon itself as shown. This bead formation is continuous except where itis cutaway as at I5 to provide a notch. This'notch is preferably located over or in substantial alignment with the pipe 6.. Of course, more than one notch I5 may be provided but it is preferred that only one be used. 'I'he mixer tube I0 is preferably equipped withaspilot flame tip I6 for the pilot flame, which itself is illustrated at Il. It is sumcient that. the housing be a support for the flash tubes,'lt notv being necessary that the housing actually perform a housing function for the flame.

'I'he ends of the kash tubes adjacent the pilot flame are arranged to be connected to the housing or cup, and more particularly with the bead It. To this end each ash tube has a cut-out portion to form an aperture which, as illustrated,

is somewhat in the shape .of a gure eight; the

aperture has enlarged ends 20 and 2| with a constricted central portion 22.

To mount a flash tube on th'e cup, the tube is placed so that it lines up with the notchy I5; in other words, as in Fig, 1 is viewed the ilash tube is placed in substantial alignment with the pipe 6, and then is lowered into the notch l5. The delning portions ofthe constricted part 2.2 pass down into the notch. Then the tube may be vswung clrcumferentially with the bead then engaging in the two end portions 20 and 2|. The constricted portions at this time underlie the bead as shown in Fig. 3 so that the tube is li'eld attached to the cup.

It will be observed that any number of ash tubes may be placed on the cup, the number being limited `by the capacity of the circumferential rim and that the llash tubes may be disposed at any desired radial position. Therefore, the burners may be disposed wherever desiredand the dash tubes adjusted to extend radially from the pilot name to the burner. To illustrate this a little more definitely 4there is shown an auxiliary burner I, which is one more than the usual number of burners, and it will be seen how it is merely necessary to place an ylows that when a ash tube is angularly adjusted it swings around the .pilot flame as a center, as distinguished from an arrangement where the flash tube has a connection with the housing such that the flash tube would pivot on the housing. As a result, all the ash tubes extend substantially on a true radial line from the pilot flame as a center and therefore the flash tubes open directly toward the pilot flame. 'I'his is illustrated by the full and dotted line positions of Fig. 2 showing the adjustment of one of the flash tubes. Where a flash tube pivots on a housing the inner end is caused to swing away from the pilot flame if there be any adjustment.

cumferential wall, said wall having a bead formation on its upper edge, the upper edge of a the wall having at least one notch formation therein `which outs through the bead, and said wall and bead being otherwise uninterrupted throughout, means for supplyins gasjsubstantially centrally within the wall for the pilot flame, flash tubes for extending from the pilot name to the burners, each ash tube having a slot in its wall adjacent the pilot name end thereof, said slot being elongated circumferentially of the tube and having enlarged end portions and a constricted intermediate portion, the constricted intermediate portionhaving a cross dimension less than that of the bead and adapted to pass into the notch formation, whereby upon shift of the tube along the wall the parts defining the constricted intermediate portionengage 'under the bead to hold the tube on to the wall, the

The arrangement of the bead Il and the r the housing. Inasmuch as the flash tubes are not permanently united with the housing, the structure may be shipped in disassembled relation, and it is very easy to slip the tubes into position. The notch l5 is preferably located adjacent the pipe B for the reason that there is usually no burner in a position which requires a flash tube to parallel the pipe 8.

I claim:

1. In a lighter structure for a plurality of gas burners grouped around a pilot ame, a supporting cup member having an upstanding circumferential wall, said wall having a bead formation on its upper edge, the upper edge of the -wall having at least one notch formation therein which cuts through the bead. and said wall and bead being otherwise uninterrupted throughout, means for supplying gas to the central portion of the cup for the pilot flame, flash tubes for extending from the pilot flame to the burners, each flash tube having a slot in its wall adjacent the pilot flame end thereof, said slot being elongated circumferentially of the tube and having enlarged end portions and a constricted intermediate portion, the constricted intermediate portion having a cross dimension less than that of the bead and adapted to pass into the notch formation, whereby upon shift of the tube along the wall the parts defining the constricted portion engage under the bead, the enlarged end portions of the slot freely receiving the bead so that the tube, when thus engaged therewith, is slidable throughout the extent of the wall.

2. In a lighter structure for a plurality of gas burners grouped around a pilot flame, a supenlarged end portions of the' slot freely receiving the bead so that the tube, when thus engaged therewith, is slidable throughout the extent of the wall.

3. In a lighter structure for a plurality of gas burners grouped around a pilot flame, a supporting member comprising an upstanding circumferential wall, said wall having a formation on its upper edge with a radial dimension greater than the thickness of the wall whereby to overhang the wall, the upper edge of the wall having at least one notch formation therein which cuts through the said formation and said wall and formation being otherwise uninterrupted throughout their circumferential extent, means for supplying gas substantially'centrally within the circumferential wall for the pilot flame, flash tubes for extending from the pilot flame to the burners, each flash tube having a slot in its wall adjacent the pilot flame end. said slot being elongated circumferentially of the tube and having enlarged end portions and a constricted intermediate portion, 'the constricted intermediate portion having a cross dimension less than the radial dimension of the formation on the upper end of the wall and adapted to pass into the notch formation, ywhereby upon shift of the tube along the wall the parts defining the constricted intermediate portion engage under the formation on the upper edge of the wall to porting member comprising an upstanding cirwall.

4. In a lighter structure for a plurality of gas burners grouped around a pilot ilame, a supporting cup member'havinglan upstanding circumferential wall, the upper edge of the wall being fashioned to'provide an integral formation having a radial dimension greater than the thickness of the wall whereby to overhang the same, means forsupplying gas to the central portion of the cup for the pilot flame, flash tubes for extending from the pilot flame to the burners. the end of each flash tube adjacent the pilot flame having a notch formation extending through its wall for engaging the overhanging formation on said wall' including a part for engaging underneath the overhanging formation and a recess formation for freely receiving said overhanging formation so that each tube, when thus engaged with said formation, is slidable throughout the .circumferential extent of said ERVIN H.' MUEILER.

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