US2112000A - Lighting device for gas burners - Google Patents

Description

March 22, 1938. c. s. sTpc'Kl-:NHOLT ET A. 2,112,000

LIGHTING DEVICE FOR GAS BURNERS .Filed May 7, 1937 Q'WM MA.:

' ATTORNEYS Patented Mar. 22,1938

UNITED -sTAT-Es 2,112,000 mGnTnvG DEVICE Fon das BURNERS Casper S. Stuckenholt and Lawrence Jaron,

Cleveland, Ohio, assignors to The W. J.'Schoenberger Company, Cleveland, Ohio, a corporation of Ohio Application May '1, 1937, sensi-N0. 141,333

2 Claims.

Our invention relates to a lighting device for gas burners and particularly to a device for use in connection with the burners 'of gas stoves.

One of the objects of the invention is to pro- 6 vide a lighter with improved means for delivering a stream of gas from a plurality of main burners, Iin an unvarying direction to a xed point in the pilot housingyregardless of irregularities in the positioning of the main burners with respect to l the pilot burner or housing.

Another object of the invention is to provide a lighter with tubes of such shape that pilot endsv of the tubes c'an be compactly placed in the pilot v housing to compensate for differences in distances between the burner holes for the injection tips.

A further object of the invention is to provide" a lighter with means for directing secondary air to the pilot, and'for shielding the stream of airand gas passing from the' tubesv tothe pilot from disturbing air currents.

Other objects and advantages of the invention will be apparent as the description is considered :in connection with the accompanying drawing, in,

which:

Figure l is a top plan view of a conventional type of gas range, partially broken awayVillustrating the application of the improved lighting device;

Figure 2 is a plan /view of one of the ignition 30 tubes; l

Figure 3 is a section on the line 3-3 of Figure 1;

Figure 4 is a section through the pilot on line l--II of Figure 2;

Figure 5 is a sectional view on the line 5-5 of Figure 3; and I K Figure 6 is an enlarged fragmentary view 'of the pilot showing adjustability of the tubes lto side by .side relationship to accommodate closely ar- 40 ranged burners.

Referring more particularly lto the drawing wherein a preferredembodiment ofthe invention is illustrated, I designates' the top frame of a stove, on which are mounted a plurality of star 45 or other suitably shaped burners 2. Gas is supplied tothe burners through mixing tubes 3 connected with a gasmanifold 4. The parts just described are supported by the frame Il in a conventional manner'.

Each of the burners 2 is connectedwith a Buns'en type of pilot burner 5 by means of gas conveying tubes 6 in a manner presently described. A pipe 1 connected at opposite ends to the pilot burner and manifold respectively, sup- 55 plies gas to the pilot burner. The upper end of REISSUED the pilot burner is formed with an externally threaded portion Ily upon which is mounted a U-shaped bracket 9, the latter beingformed with a threaded opening I0 for this purpose. j nut I9 locks the bracket against rotary movement. The vertically disposed arms II of the bracket 9 are curved outwardly and downwardly to provide loops I2 for supporting a split ring I3. Tubes 6, previously mentioned, one for each main burner 2, leading from the pilot to the main burners conveyV gas from the latter to the pilot burner where the gas becomes ignited and conveys the ame back to the burners 2 to ignite or light the same. The pilot' light preferably burns constantly and the main burners are ignited by the issuance of gas therefrom and therefore without flashing thev pilot. The inner ends of the tube 6 are cone shaped and these cone shaped ends are each formed with a pair of aligned openings I 4 through which the split ring extends. By m'aking the inner ends of tubes 6 conical, it is possible to suitably connect main burners such as the two rear burners of Figure 1, with the pilot, when these burners are so close t'o each other as to necessitate moving the two rear tubes 6 into the substantially side by side relationship shown in dotted lines in Figure 6. This is-a distinct advantage when the burner holes for the injection tips of any two burners are close together.

A substantially cone shaped hood I5 is mounted on the bracket 9 with its upper open end I6 axially aligned with the pilot burner 5. Thus, the peripheral edge of the downwardly flared wall of the hood-is formed with ppositely dis'- posed fingers I1 which 'extend through correspondingly disposed slots I8, formed in the base of the bracket 9. This hood directs the secondary air up to the pilot and at the same time,

JUN 25 1949 A lock shields the stream of air and gas mixture between ,Y

the end of the tube and the pilot. An outwardly aring collar 20 on the upper end of the hood I5 and defining the opening I6, serves to baiile theignition gas issuing from the tubes 6. The inner cone shaped ends of the tubes 6 overlap the lower flared portion of the hood I5 and are vaxially aligned with the top edge of the outwardly iiaring formed with a reduced inverted U-shaped end i3 for the reception of a. brass or steel injection tip or nipple 24, a small projection 25 on the tcp of the nipple being adapted to extend through an opening 26 in the top Wall of the part 23. This projection is upset or spread as shown in Figures 3 and 5, to lock the nipple securely in place. The lower end of this nipple is preferably beveled to snugly but removably fit in. a correspondingly shaped opening 21 formed in each burner 2 by enlarging one of the burner holes thereof. The stream of gas emerging from passage 29 entrains air through openings 30.

Whenever the burners 2 are turned on or Whenever gas leaks occur, suilicient gas flows through passages 28 and 29 in nipples 24, into tubular extensions 2|, and thence through tubes 6 to the pilot 5 where the gas becomes ignited and conveys the flame back to the burners.

While the inner ends of the tubes G are securely locked on the ring i3, the openings Hl are of sufliicient size to permit of the outer ends of adjacent tubes being swung to some extent in a horizontal plane,k either toward or away from each other according to the relative distances apart the burners or their nipple openings are from each other. It will of course be understood that in addition to this rocking movement, the inner ends of the tubes are also free for sliding a 2,112,000 extensions 12|, preferably made of stampings, is

movement to any desired adjusted position before the nipples have been anchored in place. 'Ihe ring I3 serves to momentarily check or slow up the flow of air and gas mixture from the tubes 6. In` this way a much better mix and surer and better explosion is obtained when the mixture reaches the pilot.

What We claim is:

1. In a. lighter, the combination of a burner, a source of fuel supply therefor, a pilot, a bracket mounted for vertical adjustment on said pilot, said bracket having vertically disposed arms, a substantially cone shaped hood on said bracket and partially enveloping said pilot, a ring like member mounted in tie upper ends of said arms. a tube having openings in its inner end for receiving said ring and at the other end communicating with the burner.

2. In a lighter, the combination of a burner, a source of fuel supply therefor, a pilot, a bracket on said pilot, a ring supported by said bracket and spaced from the pilot, a tube having at one end alined openings receiving said ring for slidably supporting the tube on the ring and the other end of the tube communicating with said

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