US1521302A - Gas burner - Google Patents

Description

1,52 LEZ' '.1. KELLY ET AL Dec. 30. 1924.

GAS BURNER "9 "\\\\\\\\l IIIIIIH 2 Sheets-Sheet l HHH' umso. 11924'.- 1,521-,302 J. KELLY ET AL GAS BURNER 'Filed Aug. 8,. 2 Sheets-Sheet 2' illgnmnl Patented Dec. 30, 1924.,

UNITED STAIRS saveur orties.

JAMES KELLY AND FREDERICK C. VOLKBIAN, O?? B lLTIIiIORFi, MARYLAND, .ASSIGNORS TO CITIES ILLUMINATING C0., OF NEW YORK, N. Y., A. CORIORATIN 0I1 NEW YORK.

GAS BURNER.

To all wiom t may concern:

Be it known that JAMES KELLY and Fanniinroii C. VoLKMAN, citizens of the 1United States, residing atV Baltimorecity, in the State of Maryland, have invented cert-ain new and useful'V Improvements in Burners, of which the. following is a speciiication.

This invention relates to improvements iii gas burners for illuminating purposes, and more particularly to that class of burners for either street Vor house, in connection with which a mantle is used. v

In burners of this class in common use a pilot is employed that burns constanth1 with a low liame,.but which isadapted when the main flow of Vgas is turned on, to project one Or more tongues of flame against the mantles, the number of the flames depending upon the number of mantles employed in diderent style burners. The most coinmon one in use is a two mantle burner.l consequently, the pilot is so arranged that the flames are projected in upward divergent projections to light each ofthe oppositely disposed mantles.

One of the objects of this invention is to improve upon the pilot arrangement of these burners, and another object particularly, is to improve upon the flush arrangement 0f the ordinary burner, as well as to generallyimprove4 this class of burners in the particulars of ease of assembling and dis assembling the partsfor repairs, all as will appear from the following description.

In the drawings illustrating the invene tion,"

Fig. 1 is a front elevation of a burner constructed in accordance with our invention.

Fig. 2 is an edge elevation.

Fig. 3 is a central section portion of the burner. i Y

Fig. 4 is a detail central section ofthe upper part of the burner taken upon a line diametrically opposite that` upon which Figure 3 is taken, andV Fig. 5 is an enlarged detail perspective view of the upper end of ther flush tube of the upper part of the burner in opposite directions with a @pre-charge, or a charge which reaches the burner nozzles slightlyin advance of the main ow.

Referring to the drawings, the numeral 1 designates the pipe connected with the main,

which is threaded to receive a cap 2 integral with the valve case 3 in which works the valve l operated by the rocker arm 5. This valve case contains the various channels or by-passes controlled by the valve, and these 1Jy-passes, it will be understood, lead to the main burner 2, and to the flush and pilot tubes, and since this invention d oes not reside in the construction of the valve case, its by-passes, channels, etc. they need not, it is thought, be illustrated or scribed in further detail.

The numeral 6 designates the main burner tube which comprises a lower section 7, and an upper section 8, in which there is interposed the usual bunsen 9. The upper end of the upper section 9 is threaded as indicated at 10, for the reception of the downwardly extending internally threaded sock-- et 11 of the tubular T-head 12. The downtiirned portions 18 of the T-head are each provided with a flange 14, below which there are threads 15 which receive the upper ends of fittings 16, which are internally threaded as indicated at 17 to receive the threaded ends of the nozzles 18. Interposed between the upper ends of the fittings 16 `and the flanges 14C, and preferably 'held steady by washers 19 are shade holders Q0. Each holder is provided with an inwardly Aextendingledge 21 cut through at intervals as indicated at 22 for the passage of ears formed upon the usual rings 23, which rings embrace the upper reduced part of the shades, and are held to the shades by the usual thumb screws 2e passing through ears 25 on the rings, all of which is of common construction.

In the construction illustrated, the mantles are carried by the shade rings so that when the shade rings are removed, the mantles are also removed. The manner of attachment of the shade to the shade holder is by inserting the shade and rings into the holders, and slightly turning them.` the shade wings being` provided with laterally extending ears that rest upon the ledges 21 of the holders. which is also common. showing the manner of kflushing the upper The numeral 26 designates the pilot tube, This is let into the valve case and secured thereto by a coupling 27, and its lower' end communicates with the pilot passage in the case as is usual. The upper end of the pilot tube opens into a substantially spherical coupling 28, whose lateral extensions 29 `are threaded internally for the reception of laterally extending tubes 30,- whoseoutward extending `ends are bent downwardly and aref provided with heads 3l, which' vseat upon upwardlyl extending members 32 externally threaded roi1 the reception of couplings 33. The numeral 3a designates what may be called the pilot tube ends. These fit snugly into the'niembers 32 and the holes in these Vends register with the holes iii the laterally extending tubes 30, and each of the ends are further provided with tips 35 having very small perforations 35 therein, the

' Y tips constituting the pilot burners, and the arrangement is such that the pilot llame will be maintained only when Vthe main gas supply is turned off, and they are again ignited VVas the main burner flame goes out. Thus the pilots are what is known as 12 hour pil-ots, the gas Aissuing from the small perforations vin the ends of the tips is under toa state of incandescence gradually without pilot, which not only has a tendency torup- Y ture the, mantle, but whereit is used in connection with more than one burner, some-v ,flame of considerable volume shock or explosion, thus completely'eliminating the danger of rupturing the fragile mantles, as is often the case wherea-yellow and force is projected with more or less violence directly against the mantles. Indeed, one of the primary purposes oithis pilot is to obviate the objection to the ordinary yellow fla-me times :tails to project flames ot equa-l' length, in which cases only one of the mantles are lighted, Vdue in many instances to st'oppages `ofthe small ducts, from which the yellow flames issue when the main gas supply is turned on.

The numeral 36 designates the flush tube, the; lower end of which is let into the valve casing 3, andthe upper end of this tube is bent inwardly, and enters the central portionY of the T-headilQ, as shown more clearly in Figure ll. The inner end of the tube is closed', and on opposite sidesthe tube is provided with small apertures 37, vand these oppositely disposedapertures open in the direction oi"Y theilow of gas. through` the V'l'f-l'read so as to project an equal amount 'of flushing gasto each of the nozzles.V This flushing charge," it willtbe understood, enters the nozzles slightly in advance of the llowso as to supply the burners proper with aV s'uicient amount of gasto condition the maiitles tofreceive and taire care of the main volume which follows;

lt is customary in burners of this type to" use in the nozzles i8 a spreader, which consists of a device supported byfthe nozzle, and which partly iills its-lower endsbut by theiise of the form of pilot illustrated and described, we are enabled to eliminate these f spreaders since obviously the location of the -tips 35 at the lower end of the nozzle will. v

act as a spreader Vfor the main supply of gas, and' causes it to 'issuey from the nozzle in a circular iilm ratherthan in a volume commensurate Vwith of the nozzles.

It will be understocd that thelower endV of the flush'tube registers with asuitable duct or vby--pass in the valvecase 3, which by-pass is controlled by the valve :inl such manner that as the valve is opened, the flushing Vsupply will pass into the flush tube the interior diameter Y in advance of the opening of theby-pass i which controls the main supply.

It will be Vseen that the construction illustrated, or especially with regard to the pilotY arrangement is such'that the parts can be very readily assembledand taken apart for cleaning `or repairs. While from the ,foregoing description, the operation ofthe burner will probably 'be yunderstood by those skilled in such matters, nevertheless'a short statement otfthek operation' will be made.

Assuming the pilot burner 35 tofbe lighted, and burningwith a veryA small blue j" lmoved downi and through `the two'cnozzle's. VArfiurther y l movement of theva'lve will establish conimunication `between the main and the burn-V ers to maintain the mantles in the required and full state of incandescence.V

A still further movement of the valve 'Y will cutV off communication `between'ftlieA main and thepilots 35 extinguishingthem,

A movement of the valve in, thev reverse Vdirection to extinguish the' lights will open the by-pass to the pilots which are again lighted from the dying products of combustion from the mantles, the pilots continuing to Aburn until the main supply of thegas is again lighted; Y

We claim-V y l. Ina burner of the class described, in combination, a burner tube, formed with 'a horizontal portion at its upper end, and a nozzle communicating with said horizontal portion, a flush tube extending into said horizontal portion, said tube having Vafclosed end Yand a laterally extending orificeadapted to project the flushing charge laterally through the horizontal portion of the burner tube to the nozzle.

In a gas burner of the inverted type, a burner tube and ineans for supplying gas to said tube, a head connected with said tube and having downturned portions, an inverted nozzle-attached at the end of each down-turned portion, a flush tube let into the heed, said tube having a closed end and oppositely disposed aperture whereby a iush charge may Vbe projected simultan@ ously in opposite directions to and through each of the downturned portions oit the head.

3. In a gas burner of the inverted type, a burner tube and ineans for supplying gas to said tube, a head connected With said tube and having downturned portions, an inverted nozzle attached at the end of each downturned portion, Va flush tube lot into the head, said tube having a closed end and oppositely disposed aperture whereby a Hush@ charge may be projected simultaneously in@ opposite directions to and through each of the down-turned portions of the head, a pilot tube, pilot burners extending into each of the nozzles, means for establishing coininunication between the pilot tube and the burners, the said pilot burners being adapted to act as pilots to ignite the gas issuing from the nozzles, and as spreaders to properly distribute the gas as it issues from the nozzles.

4. ln a gas burner, in combination With the niain burner tube of a pluralityY of gas distributing tubes intersecting the burner tube, and a iush tube entering the distributing tubes at a point of intersection between the former and latter.

In testimony whereof We aiiix our signatures in .presence of two Witnesses.

JAMES KELLY. FREDERICK C. VOLKMAN. Witnesses:

SIDNEY C. VINCENT, MARGARET MGCABE.

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