US2008042A - Lighting device - Google Patents

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July v16, 19354. W. W. sAcKETT LIGHTING DEVICEv Filed Nov. 20, 1931 Patented July 16, 1935 LIGHTING DEVICE Warren W. Sackett, Milwaukee, Wis., assignor to Milwaukee Gas Specialty Company, Milwaukee, Wis., a corporation of Wisconsin yApplication November 20, 1931, Serial No. 576,251v

7 Claims.

rMyinvention relates to igniters for gas burners and has particular relation to an igniter for igj niting a heater burner from a pilot burner.

I have considered the problem ofigniting gas- 51eous fuel as used in ovens, heaters, stoves and the like, and have observed that the devices of the prior art are not always satisfactory for the reason that they are `not positive in operation, inasmuch as `at times the igniting gas burns so rapidly as to prevent ignition of the gas issuing "from the burner to bel ignited.

It has also beenobserved that in most failures of this type, the failure to ignite the burner prop- ,erlyfpermits gas to escape from the oven burner and the `accumulation of the escaping gas mixing with thesurrounding air forms a combustible and highly `explosive mixture which may be ignited lbyan adjacent pilot flame or otherwise and resultA in a serious explosion. A large accumulation of gas of this type is also. dangerous due to the fact that the gas possesses a highly toxic value .and is dangerous to persons in the immediate vicinity; Y.

It isthus necessary, in devices of prior types, for the operator to maintain a close observance of the appliance each and every time the gas is turned on and the ignition deviceis operated. It is thus seenthat in thistype of device the operationis dependent upon the skill Yand carefulness nof the operator.

` Thepresent invention therefore contemplates providing an ignition Vdevice which is reliable and 'positive in operation, ,and which is of simple construction so that it may be operated easily and safely.". t `My ignitionldevice may be used or modied for use `inconnection with any type of lighter, such as the fflash? type of igniter or the gravity type of. lightenl The device is simple, reliable, sturdy andinexpensive. Y 'y Other and furtherfeatures andobjects of the invention will be more apparent to those skilled in. the `art upon a consideration of the accompanying Adrawing and following specification,

wherein is disclosed a single exemplary embodif ment of the invention with the understanding, however, that, such changes may bemade therein as `fall` vwithin the scope of the appended claims without departing from the spirit of the invention. .j Y

In said drawing:

Figure V1 is a plan View of my ignition device as` applied tol the burners of a stove and an oven orlike 4devicesin side by side relation;

Figure AV2 is a view partly in section and partly plied to a ash type of lighter.

in elevation of my lighter device as applied to a gravityf type of lighter; n Y j Figure 3 is a view partly in elevation andpartly in section of my improved lighting device as aptaken substantially along the line 3f3 of Figure Figure 4 is a detailrperspective View showing the relationship betweenthe end of theflighter l tube and the pilot tip.

The present invention deals particularly: with an ignition system in which the flame from' a pilot light is conducted to the heater burner when ignition of the gas issuing fromthe heater burner is desired. In the embodiment of the invention shown and described the igniter is used for igniting the gas issuing from the burner of an oven heater or the like which is usually situated in side by side relation withthe top burnersof a y stove, but it is apparent, however, that the device The View "is burners i! by means of supply pipes I2` and the flow; of gas through the Vsupply pipes into the burners Il is controlled by means of valves and mixing chambers (not shown) of the usual construction. i l t In the embodiment Vof the inventionshown in Figures 1 and 3, .the igniter s-shown in connecfltion with a "flash type of igniter used fon igniting the stove burners. l The igniter system includes a lighter tube l I3 which is connected with the manifold l0 by means of a valve I4 of the Y push button type which is set to delivera small quantity of gas to the pilot light so long as the plunger button of the valveis not depressed. f, If only this minimum amount of gas is supplied the gas issues from the upper ports I6 and from the `creased volumefrom the lower ports It.` If any ofthe valves controlling the flow of gas Vin the pipes l2 are opened, the gas issuing from the corresponding burner or burners II will be ignited by the flash from the pilot llame.

Supplementary ports 20 are provided in burner I1 for relay purposes to support the main flame I9 when the rate of flame propagation is less than the rate of flow of the gas from the ports I6. The pilot flame is preferably protected from drafts and the like by means of a cup-shaped base 2I over-which a cup-shaped or cylindrical hood 22 ,is'telesco-pedto form aninclosure. The base 2I is provided with openings 23 therein to permit the entrance of air to the hood to support combustion of the pilot flame and another opening 24 is provided in the top of the hood 22 to permit the products of combustiontoescape from the hood. Other openings 26 -ar'ewprovided in the side Wall of the hood to permit the ilash Vflame to reach the burners I I.

Still another opening 21 is provided in the sid Wall of the hood in order that a pipe,lighter or conduit .tube 2,8 Amay .be inserted through the opening. The inner end of the pipe 2B preferably v-.coverswone .or more of thelower ports i5 in the v pilot `buirner I1 and is provided with a hollow annularchannelshaped .lug 29 adapted .to encircle '.,thepilot bur/ner I1 and ,act as a support for the inner end of the pipe 28, as shown in Figure 4. {I heputerendof `the ,pipe28 passes through an .,enlarged'opening inthe wall 3| of the oven and ends in a position adjacent the ports 32 of the ,.ovenburner 433. The tube28 is preferablyfprovided withanarrow slot ,34.along itsupper por- .,tiontopermit the escape of Agas from the tube .in a l ong,. narrow stream which, when ignited, forms a ribbon ofilameconnecting the pilot burner and theheaterburnen Gas` for the tube 28 is supiiliectinthis embodiment of the invention, from fthe ports .I 6 in the pilot burner.

V. Gasis.suppliedto thefovenburner 33 through .ayalve .3,6, .which is adaptedto regulate the ow of gas to theburnenand amixing chamber 31 Mio r. r r u'xing.the gas with air .to improvecombus- -itionof jtheggas, Aboth of .whichdevicesare of the usual construction.

In operationof .thedevice shown in -Figures l ,an c 1 3, gas is .admitted to `thegpilot tube .I3 and the y pilot burneri] .by means of the valve'I4, and the issuing yfrom the pilot burner is ignited to forma iame I8 which is `kept burning continuously, ,21S long as gasispsupplied to the manifold Ifone of the stove burners II is to be lighted, the valyecontrolling the flow of ,gas through the pipes I2 to the proper burner I I is turned on. s oonasgas is Iissuing from the ports of the burnerjlj, the buttonof the valve v I4 controlling the f iowof gas within `the lighter* Vtube I3 is depressed and -a greatly increased Iiiow of gas results. Vincleased iiowof gas results in flames I,9 ,at ea chpof vthe ports of the pilot burner which iare of sufficient length to .reach the burners II to ignite the gas issuing from any or all vof the burners.

7.Sigloeth epipeml coversone or more of the ports L6 in the pilot burner, gas issues through the `ports in suilicient quantities to fill the tube 2li. Ifheend of the tube adjacent the pilot flame is lQscd except for the Opening .3.4 .along the top of the tube, and therefore the gas within the tube isxnot ignited. The gas issues through the slot at the .upper part of the tube in along, narrow ribbon which is ignitedbythe pilot flame I 8 `to burn in 1a ribbon of flame 38 along the top of the tube. '*Ifhe gas winch does not issue through the slot 34 passes out the outer end ofthe tube adjacent the 'burner .8.3 .to .form .an elongated .name 39 which is quite suitable for igniting the gas issuing from the ports 32 in the burner when gas is admitted to the burner through the valve 33 and mixing chamber 31.

As soon as the gas issuing from the ports 32 has been ignited, the button I4 is released to decrease the flow of gas in the tube I3 and, since the pressure of the gas' issuing from the ports I6 is not great enough to cause the gas to ll the tube 28, the flame`34 dies out.

In the embodiment of the invention shown in Figure 2, the top burners may be ignited in vthe same manner as when the gravity type of lighter is used, that is, the plunger of the iiash control valve, such as the valve I4, need not be depressed or otherwise operated. Gas is admitted to the pilot burner I1 in suiiicient quantity to maintain an even low flame. Each of the tubes 28a and 28h is provided with a suitable lug 23a, which encircles the pilot burner I1 and which is engaged in a suitable depending cylindrical iiue member 4U projecting from the opening 24 in the housing or hood 22. The tubes project `through suitable openings 26a formed in the hood 22, toward therespective burners, the tubetaprojecting toward the oven burner. The hood 22 has a cutout portion 21 immediately above the entrance of the tube 28a and the tube is slotted to provide a passage for the flame from theports I6 through opening 21 and along the upper slotted surface of the tube 28a to the .burner 3.3.

Referring in more detail to the tube 28a, this tube is inclined downwardly from the pilot burner to the .heater burner 33, and an extending portion 4I lof the tube 28a rests over the upper periphery of .the burner 33 to support the outer end of the tube. The tube is provided on its lower side with an opening 42 adjacent the ports 320i the burner.

If desired, the top burners II may be provided with the gravity type of ignition and may be provided with tubes 2817 projecting through suitable openings .Za in the hood 22 in the same manner as described in connection with tube 28a. burners and are suitably secured thereon so that when it is desired to ignite the burners gas issuing from the ports of the burners will travel before. If it is desired to operate the heater 33,

gas is admitted to the heater through the Vvalve r36 and mixing chamber 31. The gas passes out of vthe openings 32 in the heater 33, rises upwardly through the opening 42 of the tube 28a, into the tube and is carried upwardly and inwardly through the tube to the inner end thereof, where the gas issuing from the end of the tube is ignited by the iiame I8a. The gas issuing through the slot' 34 of the tube is ignited to form a long ribbon of llame 38a which in turn ignites gas flowing from the port 32 in the heater 33, thus igniting all of the gas issuing from the heater.

It is apparent that because the gas in the tube 28 is not mixed with air to any great extent, combustionI Within the tube will not occur. The

These .tubes project to the respective top gas issues through the slot 34 in a narrow stream, and since the gas has not been mixed with air, rapid ignition does not occur and the gas burns with a steady flame Well adapted for igniting the gas issuing from the heater burner. The device is simple, reliable and inexpensive.

Although I have described specific embodiments of my invention, it is apparent that modications may be made by those skilled in the art. These modications may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim as my invention:

1. In a burner ignition system, a pilot burner having a plurality of ports, one of which is utilized to provide gas for a pilot flame, a heater burner, a lighter for conducting flame from the pilot burner to the heater burner comprising a tube having an opening along its upper side, and means for introducing gas under increased pressure through said pilot burner to said tube for ignition by said pilot flame when ignition of the heater burner is desired.

2. -In a burner ignition system, a pilot burner flame, a heater burner, a lighter for conducting llame from the pilot burner to the heater burner comprising a tube extending over a port of the pilot burner, and means for introducing gas under increased pressure into the pilot burner whereby the tube is lled with gas which escapes through the opening in the tube and is ignited by the pilot llame to conduct the flame to the heater burner when ignition of the heater burner is desired.

3. In a burner ignition system, a pilot burner having fuel supply means, a heater burner, a lighter for conducting flame from the pilot burner to the heater burner comprising a conduit having a longitudinal opening at the upper side thereof, and means controlling said pilot burner fuel supply means for lling the conduit with gas under' increased pressure when ignition of the heater burner is desired.

4. In a domestic gas range having an oven burner and a plurality of top burners, a burner ignition system comprising a pilot burner having a plurality of ports, one of which is utilized tol provide gas for a pilot flame, means for supplying fuel to said pilot burner, a heater burner, a lighter for conducting flame from the pilot burner to the heater burner comprising a tube having an opening along its upper side, and means controlling said fuel supply means for lling the tube with gas under increased pressure when ignition of the heater burner is desired.

5. In an ignition system including a plurality of gas burners and an oven burner removed therefrom, said system having a flash igniter disposed centrally of said gas burners, the combination with said flash igniter of a conduit leading from said igniter to a pointadjacent said oven burner, said conduit having a longitudinal slot in the top thereof, and means for introducing gas under pressure through said igniter into said conduit, said gas being ignited by said igniter and passing along said slot to said oven burner to ignite the same.

6. In combination, a pilot burner comprising a torch head having laterally extending ports, a

`hood over said torch head having openings in alignment with said ports, means for supplying fuel to said torch head, a conduit supported in one of said hood openings and enclosing one of said ports, said conduit having a longitudinally extending slot in the top thereof, an oven wall, an oven burner disposed on the side of said wall away from said pilot burner, said conduit extending through and being supported by said wall and terminating at a point adjacent said oven burner, and means controlling said fuel supply means for projecting lighting flames radially outwardly from said ports through said hood openings and for introducing fuel into said conduit, said fuel being ignited along said slot to provide for ignition of said oven burner.

7. In combination, a plurality of gas burners, an oven burner removed therefrom, a hash igniter idisposed centrally of said gas burners and having vertically spaced port means, means comprising `a slotted tube enclosing one of the lower of said port means for forming a relatively restricted gas and air admixture path to said oven burner, means for introducing gas under increased pressure into said igniter to project lighting flames from said igniter toward saidgas burners, said last named means providing for flow of a stream of relatively free gas through said tube toward said oven burner, said gas being ignited along the slot in said tube by the ame from an upper one of said port means.

WARREN W. SACKETT.

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