US1604783A - Gas burner - Google Patents

Description

, 1,604,783 G. E. PICKUP GAS BURNER Filed July 5, 1924 2 Sheets-Sheet l Oct. 26 1926.

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G. E. PICKUP GAS BURNER Oct. 26 1926. 1,604,783

Filed July 5, 1924 2 Sheets-Sheet 2 Patented oa. ze, 1926.

UNITI-.D STATES A 1,604,133- PAT-ENT OFFICE.

GEORGE E. PICKUP, OF NEWARK, OHO, ASSIGNORVTO TH VWEHBL COMPANY, OF

NEWARK, OHIO, A. CORPORATION OF OHIO. A

Gas BURNER.

.applicationv manly 5, 1924. semina. 724,237.

The invention pertains to gas burners of the type employed in open fire gas heaters; and the aim has been to produce a burner which is at the same time effectual in operation and capable of economical manufacture.

Gas burners of the character indicated have commonly employed a lurality of burner tips communicating with a common .l0 supply passage or manifold and having elongated discharge orifices formed bythe use of a plurality of plates or strips secured together in uniformly spaced parallel relation; but diiiculty is usually encountered in the provision of an effectual securing means due to the expansion and contraction of the parts under heat.

The object of the invention is to produce a gas burner having discharge tips orheads constructed so as to provide orifice-forming plates or strips .properly arranged in uniformly spaced relationv and in effect integrally united with the walls of the head so 5 as to be efectually secured in position there- 2 .in

In the accompanying drawings, I have shown a burner of preferred form and while my invention willbe hereinafter explained in a detailed description of this particular form, it is contemplated that various changes in the construction set forth may be made, by those skilled, without, however, departingfrom the spirit and scope of the invention as expressed in the appended claims.v l.

Figure 1 of the drawings is a side elevational view of the burner.

Fig. 2 is a planrview thereof. Fig. 3 is a. fragmentary vertical sectional view on an enlarged scale through one end of the burner, the view being taken-approximately on line of 3 3 of Fig. 2.

Fi 4 is a plan view of av frame or form in which 'the jet plates are mounted so as to be capable of being supported in the mould in` the operation of casting the burner. i

Figs. 5 and 6 are respectively vertlcal sectional and side elevational views of such @0 frame or form; l

Fig. `7 is a plan view illustratlngl the method of casting the burner heads with the jet/plates secured therein.

'F1g.'8 is a -fragmentary vert1cal sectional view on an enlarged scale taken'in the line Il 8'8 of Fig. 7. f Y

The burner comprises a plurality of gas discharge tips or heads 10 communicating A with a common gas supply passage or manifold 11.` The latter in turn receives its. sup- Q0 ply of gas from an elongated tube 12 opening into the manifold-centrally thereof and projecting inthe present instance beyond one end of the manifold. At its projecting end the tube 12hasa bell mouth 13 into 68 which the gas is discharged from the nozzle of a gas cock (not shown) in the usual way. On the opposite sides of the bell mouth 13 the supply tube 12 is -shown as provided with lugs 14 whereby this end of the burner 70 may be secured inthe heater frame. The heads 10 at opposite ends of the manifold 11 are also shown as provided with yforwardly projecting lugs 15, and one of the intermediate heads 10 has a rearwardly projectfl ing lug 16, said lugs 15 and 16 servin `to support the burner in the heater frame not shown). v

Each of the burner heads 10 comprises a main chamber 17 communicating with the Il, interior of the manifold A11 by way of a passage 18 formed by a neck 19 which connects the head to the body of the manifold. From the chamber 17 the gas discharges through elongated jetoriices 20 formed by 85 means of a plurality of plates or strips 21 extending transversely across the head and arranged in uniformly spaced parallel relation. Herein the head is shown as being rectangular in form.4 which is preferable because it lends itself readily to the formation of slots of uniform size, that is to say, equal in' length as well as in width.

Because burners of this character are subject to intense heat, it is desirable that the plates 21 shall be made of some heat resisting metal such as the nickel chromium alloys and shall be rmly secured in the burner heads so as `to avoid a loosening thereof under the expansion and contraction of the metal, and also it is desirable that the plates or strips be held` in good heatconducting relation to the body of the head so as t insure that the heat will be conducted from the plates to thehead and thence .down to the body of the main burner. To accomplish these results, I secure the jet plates .1n the head in the casting of the burner, the

opposite ends of' the plates being permawhich are secured together at their free edges to form a rectangular tube. The opposite Walls of the tube thus formed are provided with slots 23 therein adapted to receive projecting end portions 24 on the opposite ends of each of the plates (see Fig. 5). Said projecting ends 24 are of a reduced width as compared to .the width of the plates so as to form shoulders 25 abutting the inner sides of the tube. Also the said projecting ends are of a length substantially greater than the thickness of the metal forming the tube for a purpose which will presently be apparent. The meeting edges of the two sections 22a and 22b may be secured together in any suitable way. That herein shown consists of fingers 25 formed integral with the edges of one section and entered through slots 26 formed in the edges of the other section and then bent back against the wall of said other section as shown clearly in Figs. 4, 5 and 6. The slotted edges of the section 22a are shown as being offset as at 27 to receive the meeting edges of the other section and allow them to meet in the same plane.

Referringnow to Figs. 7 and 8, A designates the lower section of a flask containing .over the head the base of a mould from which the burner pattern has been withdrawn and inwhich is placed a core B having head portions C, adapted to produce the hollow burner body with the heads formed integral therewith. Each of the head portionsv C of the core is equipped with aframe 22 having jet plates secured therein as above set forth, the lower end of the frame being slipped ortion C in each instance. As shown clearlry in Fig. 8, the frame 22 is made of a length substantially greater than the internal depth of the head, and the up- -per portion of the frame projects into a.

supporting recess C formed by a suitable core-print on the burner pattern in the usu- `al way. The lower edges of the jet plates are placed in contact with the upper faces of the head portion C of the core, and the arrangement is such that the upper edges of said plates terminate in a plane substantially or slightly beyond the plane of the completed head to be formed.

It will be apparent that with the core thus equipped with plate-carrying forms or frames, the molten metal when introduced. into the mould will How around such frames and the projecting ends 24 of each of the plates, passing as they do through and beyond the outrr faces of the frame, become embedded in the metal of the head. Thus the plates become firmly and intimately united with the body of the head and the frame forms a lining for the side walls of the head. In the operation of finishing the burner thus cast, the projecting ends of the plate frames 22 are ground olf together with the eXtreme outer edges of the plates so as to form a smooth slotted surface.

It will be observed that a burner constructed in accordance with my invention. is of an advantageous character because of the uniting of the jet plates integrally with the body of the burner, thus insuring a maximum conduction of heat from the plates and heads and permitting the use of jet plates which will withstand heat better than cast iron or steel. 'Ihe method of construction moreover insures that the plates will be properly arranged in uniformly spaced relation and renders it possible to employ a metal in the plates different from that of the burner body. At the same time the amount of machine work required to finish the burneris not materially greater than that required for linishing the ordinary body inasmuch as the inner walls of the slots, not being cast but rather formedV from smooth finished plates, require no machining. Thus the cost of manufacture is low.

I claim as my invention:

1. A gas burner comprising, in combina-` tion, a manifold having a plurality of burner4 heads cast integral therewith and a plurality of jet plates within each head arranged in uniformly spaced relation, said plates being made of a material different from the metal of the head and having their opposite ends permanently embedded in the heads.

2. A gas burner head comprising a cast metal tubular member with ya pasageway therethrough, and a plurality of plates arranged side by side'in parallel relation near one end of said passageway so as to form jet orices between them, said plates being made of material different from that of said member and having their opposite ends permanently embedded in the metal of said member. l

3. A gas burner comprising, in combination, a cast metal head providing a chamber communicating with a source of gas supply,

side walls of said chamber, and a plurality of parallel jet plates having their opposite orifices, said head having a tubular member i i end 'extending through said member into therein, and said plates having `their oppol said head. site ends mounted in said member and serv- 5. A gas burner 'comprising a casting ing to hold said member in said head. 5 having .a supply passage and a head com- In testimony whereof, I have hereunto municatng with said passage, and a pluralaiixed my signature. l ity of plates secured in the head in uniformly spaced parallel relation to form jet GLEORGE E. PICKUP.

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