US1475465A - Gas burner - Google Patents

Description

5 6 A 5 7 l N O S m K m w D G Nov 27 1923.

GAS BURNER Filed April 15 1922 0000060 00 0 qqoapoa oo 00 000 00000000 0000 oo'ooodasb o @0 0o 00ooooooQoooea oeooopoooo Patented Nov, 2?, i923,

UhlllTEE STATES.

earner errata,

GEORGE D. WILKINSON, OF OAK PARK, ILLINOIS, ASSIGNOR T CRIBBEN & SEK'EQN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

GAS BURNER.

To all whom it my concern:

Be it known that I, GEORGE D. WILKIN- SON, a citizen of the United States, residing at Oak Park, in the county of Cook, State of Illinois, having invented certain new and useful Improvements in Gas Burners, do hereby declare that the followin is a full, clear, and exact description 0 the same.

My invention relates to burners for ovens of gas stoves or ranges, and consists in the novel and useful organizations and constructions herein described and then pointed out in the appended claims.

In the accompanying drawings, which illustrate a practical embodiment of my present invention and in which the same reference numerals indicate similar parts in the difierent figures, Fig. 1 is a top plan view partly in section of a gas range equipped with my oven-burner shown in position in the oven; Fig. 2 is a detail sectional view on the line 2-2 of Fig. 1 with the burner supply-pipes and stove strut ture broken away, and Fig. 3 is a bottom plan view of the burner sections.

As shown in the drawings the reference "numeral 1 indicates'the frame of the stove,

- box 0 the open-top, a sheet metal partition 6 being removably arranged between the ovens and above the oven gas-burner in the conventional manner, and the spaces be tween the walls 3, and 4 providing the fines through which the hot products of combustion pass upwardly from the burner and circulate around the baking chamber. The side fines are closed at their front ends by the vertical strips 7 of the front-frame to which the oven doors are pivoted, the door for the lower oven being shown at 8. The gas-supply manifold 9 is arranged in front of the burner-box of the open-top and is connected by suitable pipes to the usual series of burners 10 in the burner-box controlled by the usual valves and having the usual secondary air-mixers.

The du lex oven burner is composed of outer and inner tubular sections. The outer or main section 11 is til-shaped inhorizontal outline or contour, its parallel arms being Application filed April 15, 1922.. Serial H0. 553,238.

spaced apart according to the size of the oven and sufiiciently to receive between them the inner section which is T-shaped in corn tour and comprises a main tube or stem 12 and the cross bar or arms 13. The stem 12 of the inner section is parallel with and in the horizontal plane of the arms of the section 11, and its base is supported on the bend of that section, and its cross arms 13 are supported on the forward ends of its arms; the sections are preferably cast-integral but are independently supplied with the fuel mixture through their respective supply pipes 14' and 15 having the usual valved secondary air-mixers 16. The burner is detachably supported by its front and rear lugs 17 fastened to brackets 18 on the oven walls, and is arranged with the bend of the main section 11 at the back of the oven and the cross-bar 13 of the inner section at its front, the sections extending from front to rear of the oven as shown so that whether both sections are lighted or only one section is lighted a center-heat burner is provided for the oven. The supply pipes lt and 15 are respectively connected to the free end of one of the arms of the outer section and to the 'l of the inner section, and are curved or bent laterally at the front ends of the sections to pass to one side of the burner and through a suitable opening in the lining and sidewall between the oven and the burner-box and are then bent or curved forwardly at the inner side of the burner-box to extend their air-mixers beyond the ,front line of the burner and out of the front of the burner-box, the opening preferably being large enough to allow the air-mixers to pass through it so that all the burner parts can be removed and replaced as a unit. As the supply pipes are arranged in the same horizdntal plane their air-mixers 16 are in aline-. ment with the gas-manifold 8 and are spaced apart a suitable distance to register respectively with the gas- nozzles 19 and 20 thereof, so that the controlling valves of the oven-burner and of the burners of the open-top are in alinement at the'front of the burner-box. Thegas- nozzles 19 and 20 may be controlled by i any suitable gasvalves, and preferably by a single valve 21 of the type shown in my atent No. 1,445,984, dated February 20, 1923. The burners are made in rights and lofts, and

I the oven in correspon with their supply pi es are arranged in 'ng relation with respect to the burner-box and the gas-manifold in both right and left hand oven stoves. Both sections of the burner have gas ports of jets on their under sides, those indicated at 22 for the section 11 and for the main arm or stem 12 of the inner section being preferably arranged in double rows, while those indicated at 23 for the front crossbar 13 of the inner section are in a single row on the inner side of its arms and extend in such proximity to the end jets of the inner rows in the arms of the section 11 that the fuel flowing from the latter may be lighted from the flame of the former, the flame then being communicated to the outer rows in the section 11 by the crossjets located at any suitable points. I

The primary function of the front crossbar 13 of the inner-section is to provide heat in the front portion of the oven adjacent its doors, so that the chilling effect of the outside air that may leak into the oven around the closed doors or pass into it when either door is open will be counteracted and overcome, wholly in the first instance and invgreat part in the second. This ensures substantial uniform combustion and an equality of heat at the front and back of the oven, it is practically evenly distributed at the front and rear, and prevents chilling the oven. The secondary function of the front cross-bar 13 of this section is to provide a simple and convenient lighter or igniter for both sections. As the cross-bar is at the front of the oven adjacent the doors it forms an easy lighter for the entire burner. The operator can easily and conveniently apply the match to the fuel issuing from the cross-bar at any point along the width of the oven within the zone of its jets and without inserting the match any considerable distance into the oven, and either the center section or both sections will be lighted according to the gas supply. Also, when the outer section 11 is turned ofl, leaving flame or fire only at the center section to provide a slow or reduced heat in the oven as is necessary when a low but even fire is desired for baking requiring a stead but not an intense heat, the cross-bar 13 a ords a lighter for the section 11 when the latter is again turned on; the cross-bar not only provides heat adjacent the oven doors for the purposes above set forth while its section of the burner is thus operating for a slow fire, but it also provides flame adjacent the jets of the outer section 11 which will ignite the gas passing therethrough when this section is again to be used. Also, by providing the center sect ion of the burner with the cross-bar the lighter is made anintegral part of the burner, thereby simplifying. the construction arness an equal distribution of heat throughout the oven as they are located at the center and their opposlte rows of flame extend in the direction of the usual side flues of the oven, and as the central section will be left.

on full when the section 11 is extinguished to make low heat in the baking chamber to prevent burning the food its flame will exert its full force to draw suflicient secondary-air through its mixing chamber 16 to ensure complete combustion of the gas so that the flame is strong and not easily extinguished, while at the same time as the flame is confined to the jets of the center section it burns no more gas than an ordinary single loop burner when turned down to its low fire condition. The two sections provide a center-heat oven burner in which the flame is central of the oven and is uniformly distributed to all its parts whetherv both sections are lighted for maximum heat or only the center section is lighted for low heat, and in either case the cross-bar of this section compensates for air leakage into the oven and forms the lighter for the burner.

Also, the burner organization combines the advantages ofa central-heat oven burner and of locating its control in front of the open-top section of the range; as the supply pipes are bent laterally to one side of the oven burner and then forwardly to extend out through the burner-box they 00- act with a gas-manifold which terminates in front of the open-top section of the stove and does not extend in front of the oven section, and so the hot air from the oven cannot enter the air-mixers of the burner and interfere with its proper combustion when either oven door is opened, and the baking-oven door when opened does not obstruct access to the oven burner valve, and all the valves for both the open-top and oven burners are in alinement in front of the burner-box.

I claim:

1. A gas burner comprising a U-shaped section having its arms spaced apart and provided with gas jets, and an intermediate -shaped section provided with gas jets in its stem and cross-arms and having the base of its stem supported on the bend of the first section and its cross-arms supported on the forward ends of the arms of the first section, and an independent supply of gas for each section of the burner.

2. A gas burner comprising an outer section composed of two connected parallel arms spaced apart and having gas jets, and an intermediate T-sha-ped section separate from and supported on the first section with its cross arms atthe forward end thereof and having gas jets in its stem and crossarms, a fuel supply pipe leading to the free end of one of the arms of the outer section, and a fuel supply pipe leading to the T of the center section.

3. A gas burner comp-rising an outer section composed of two connected parallel arms spaced apart and having gas jets, and an intermediate T-shaped section separate from and supported on the first section with its cross arms at the forward end thereof and having gas jets in its stem and cross arms, and separate laterally and forwardly bent fuel supply pipes leading to the sections, the gas ets of the cross-bar of theintermediate section extending adjacent the jets of the arms of the outer section to provide a lighter therefor.

4. A gas burner comprising, an outer and a center sect-ion, the outer section being constructed of two connected parallel arms spaced apart and each having double rows of gas jets, the rows on each arm being col;- nected by cross jets, and the center section being constructed of a stem and cross-bar supported on the outer section with its crossbar at the forward end thereof, the stem having double rows of gas jets, and the I cross-bar having a row of gas jets on its inner side located contiguous to the inner t rows of jets of the arms of the outer section,

and supply pipes extending laterally from a the front ends of the sections to one side I thereof and forwardly beyond the front line of the sections.

In testimony whereof I ture.

GEORGE D. WILKINSON.

aflix my 1 sign a-

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