US1739851A - Ignition device for gas burners - Google Patents

Description

Dec. 17, 1929. c. E. METHUDY IGNITION DEVICE FOR GAS BURNERS Filed Jan. 23, 1928 2 Sheets-Sheet Dec. 17, 1929. c. E. METHUDY 1,739,851

IGNITION DEVICE FOR GAS BURNEBS Filed Jan! 25, 1928 2 Sheets-Sheet 2 Patented Dec. 17, 1929 UNITED STATES PATENT OFFICE CARL E. METHUDY, OF ST. LOUIS, MISSOURI,

00., OF EAST ST. LOUIS, ILLINOIS,

ASSIGNOR TO METHUDY ENAMEL RANGE A CORPORATION OF ILLINOIS IGNITION DEVICE ro'n GAS BURNERS Application filedJanuary 23, 1928. Serial No; 248,583.

ers'is ignited.

An object of the invention is to provide an improved ignition device for gas burners comprising a tubes opening therefrom toward the gas burners and having in its lower portion a pilot light burner above which aguard is disposed in 'sucha way as to prevent extinction of the pilot light when the gas entering said tubes is ignited by the pilot light.

Another objectof the invention is to provide an ignition device for gas burners where- 'in the pilot light casing is provided with a guard for the pilot light supported above the plane of the end of the pilot light burner and having an opening through which the flame of the pilot light extends upwardly toward a perforated cap for the pilot light casing and across the plane of openings toward gas burners. v

Another object of the invention is to provide an ignition device comprising a pilot light casing having tubular passage opening toward a gas burner and an exhaust or relief opening opposite from the opening to said tubular passage andfunctioning as a relief for the explosive force or wave resulting from ignition of gas in saidtubular passage and preventing extinction ofthe pilot light.

Another object of the invention is to provide an ignition device of the character last above mentioned wherein the casing is provided with a cover having openings of novel arrangementcooperating to obtain the advantageous results mentioned.

Other objects will appear from the following description, reference being made to the drawings in which Fig. 1 is a plan view of an embodiment of the invention for igniting the burners of a gas stove.

Fig. 2 is'a sectional view on the line 2-2 ot Fig. 1.

Fig. 3 is a sectional view on the line 33 of Fig. 1.

flash pilot light casing having .said elements.

tegral with the casing Fig. 4 is a sectional view of an improved type of burner.

The burners 1 are supplied with gas through tubes 2 and have the usual openings 3 through their upper walls for the emission of combustible gas. To this extent these burners are of the general type used on gas ranges and, in addition thereto, there is usually an oven burner (not shown), and for illustration of one of such oven burners reference is made to my co-pending application Serial No. 207,391, filed July 21, 1927, which has resulted in Patent 3, 1928. As shown in said application I also modlfy the usual construction of the burners- 1 by providing a gas outlet 4 through the side' wall of each burner.

Arms 5 extend from the burners 1 for supporting prising parts. burner tip 6 located between the cluster of burners 1 and supplied with gas through a ipe 7. v A preferred type of pilot light device is shown in Fig. 4 wherein it is seen that the tip 6 is provided with a conical recess 6 and the end of the pipe 7 on which said tip is screwed is provlded with a similar inverted conical recess 7 The walls of the recesses 6 and 7 are notched or grooved and one of said walls is of softer metal than the ball valve 8 confined in the chamber formed by The burner tip may be screwed onto the pipe 7 to clamp the ball valve 8= firmly between the tip and the end of the pipe and restrict the passage of gas; or said burner tip may be loosened slightly to permit passage of when the ball is tightly clamped. So 1t is apparent that by adjustment of the burner tip on the pipe the valve 8 may be effectively controlled to regulate the amount of gas that may pass through the burner tip for combustion. The burner tip extends into the lower end of a pilot light casing 8 from which tubes 9 extend to engagement with the arms 5 having lugs 10 engaging in holes in said arms 5 (Fig. 2). As shown, the tubes 9 are cast in- 8. A wall for the lower end of the casing 8 is provided, the

the pilot light housing and connected No. 1,675,899, issued July that part of the ignition device com- -70 The pilot light devlce comprlses a more gas than can passsame comprising a plate 11 having projectlons 12 releasably engaging an internal flange 13 at the lower end of the casing 8. The plate 11 has a number of openings 14 around the burner tip to admit air to the casing; and the casing 8 is formed with a cir cumferential series of openings 15 in a plane below the upper end of-the burner tip 6.

casing Son the shoulder 16, and is located below the openings to the tubes 9 and above the burner tip. This guard has a hole 18 alined with the burner tip through which hole a continuous flame of the pilot light rises. A number of holes 19 are formed through the guard 17 between the flame opening 18 and the edge of said guard.

This device is designed and adaptedto ignite gas issuing from the oven burner at a considerable distance from said device, as disclosed in my said co-pending application. For this purpose a tube 20 opens from one side of the casing 8 for connection with a pipe 21 adapted to receive gas issuing from the oven burner and directively control the pressure wave resulting from the ignition of said gas by the pilot light. When the gas issuing from the oven burner becomes ignited there is a return pressure wave through the pipe 21 into the casing 8, as there is a return-pressure wave to said casing 8 when the gas issuing from any of the burners 1 is 1gnited as a result of gas entering the tubes 9 from the openings 4 and becoming ignited by the pilot light. -As shown, the tubes 9 extend approximately radially from the casing 8 so that the return pressure wave in each of said tubes 9 is relieved or exhausted through an opposite tube 9. For relieving and exhausting the return pressure wave from the pipe 21 and the tube 20 a similar tubular projection 22 is provided, the same opening from the opposite side of the casing 8.

The pilot light casing is provided with a cap, the same comprising a disc 23 having a peripheral flange 24 engaging around the upper end of said casing 8 and aprojection 24 engaging in a notch in the end of the casing 8 to facilitate proper location of the cap on the casing .and prevent the cap from turning (Fig. 3). A series of holes 25 is formed through the cap 23 for the escape of the products of combustion'of the gas and for relieving the pressure waves. In addition to the holes 25 I provide alarger hole 26 in the cap 23 above the plane of the opening to the tube 20, since there is a greater pressure wave resulting from ignition of the gas issuing from the oven burner than results from ignition of gas issuing from any of the. burners 1. h I In the use of my device it will be observed (Figs. 2 and 3) that the principal point of combustion of the flame issuing from the burner tip 6 is below the guard 17 and above the openings 15 in the casing 8. Thus, the flame is protected from any currents of air or gases which might enter the casing 8 through the holes 15 or through the tubes 9, 2001' 22. In addition, the cap 23, having its holes 25 and 26 out of al'inement with the hole 18in the guard 17, prevents the direct impingement upon the pilot flame of any currents of air passing through the holes 25 and 26; In this manner I provide a means for preventing the pilot flame from becoming extinguished under any adverse conditions that might arise, as by strong drafts or the like.

From the foregoing it must be apparent that my invention attains all of its intended objects and purposes in a highly efficient and satisfactory manner. The device is of comparatively inexpensive construction and may be installed easily and, in the specific form shown, without regard as to whether the-pipe I do not restrict myself unessentially,' but contemplate such variations as may be found advisable.

I claim:

.1. A device of the-character described comprising a pilot light casing having flash openings therefrom, a pilot light burner tip extending upwardly into said casing and ter-- minating below-the plane of said openings, and a guard within and wholly supported by said casing above said burner tip and below saidopenings and having a hole above said burner tip and a series of holes between said first named hole and the wall of said casing.

2. A device of the character described comprising a pilot light casing having series of outlets therefrom and series of air inlet openings in its lower end, a pilot light burner tip extending upwardly intosaid casing and terminating above the plane of said inlet openings and below said outlets, a guard supported in said casing above said burner tip and below said outlets and having a hole above said burner tip, and a Cover for said casing having a relatively large hole above one of said.

3. A device of the character described comprising a pilot light casing, a tube opening from one side of said casing for directively controlling a pressure wave resulting from ignition of gas in said tube, a laterally extended tube opening into the opposite side of said cover for said casing.

4. A device of the character described comprising a pilot light casing, a tube opening from one side of said casing, an additional tube opening from the diametrically opposite side of said casing, each of said tubes being adapted to engage an end of a pipe for directively controlling a pressure wave resulting from ignition of gas in said pipe, a guard in and wholly supported by said casing below the openings to said tubes and having a hole therethrough, a pilot light burner tip in said casing below said hole, and a cap attached to the upper end of said casing and having a relatively large hole laterally from the vertical plane of said pilot and above the plane of the opening of the tube connected with said pipe;

5. A device of the character described comprising a pilot light casing, a tube opening from one side of said casing, an additional tube opening from the diametrically opposite side of said casing, each of said tubes being adapted to engagean end of a pipe for direztively controlling a pressure wave resulting from ignition of gasin said pipe, a guard in said casing below the openings to said tubes and having a hole therethrough, a pilot light burner tip in said casing below said hole, and a cap attached to the upper end of said casing and having a relatively large hole above the plane of the opening of the tube connected with said pipe and also having a number of relatively small holes therethrough.

' 4 6. A deviceof the character described comprising a pilot light casing, a number of tubes integrally united with and opening from said casing, for directively controlling pressure waves caused by ignition of gas entering said casing through said tubes, a pipe engaged with one of said tubes, a flash pilot light burner tip extending upwardly into said casing, for igniting gas entering said casing from said tubes, a guard in said casing above the end of said burner tip and below the openings to said tubes and having a flame orifice above said burner tip, and a perforated cap in connection with the upper end of said casing.

7. A device of the character described comprising a pilot light casing having a number of air inlet openin s through the wall thereof, a number of tu s integrally united with an opening from said casing above'said air inlet open1ngs,,a wall for the lower end of said casing, means for releasably holding said wall in connection with the lower end of said casing, a pipe extending through said wall, a flash pilot light burner tip attached to said pipe in said casing above said lower end 4 wall and extending upwardly above said air inlet openings and terminating below the openings to said tubes, and a guard in said casing above said air inlet openingsand said burner tip and below said openings to said tubes and having a flame orifice above said burner tip.

8. A device of the character described com prising a pilot light casing having flash openings therefrom, a cover for said casing having a hole above, one of said openings and having a number of additional holes which are smaller than said first named hole, means for holding said cover from turning on said casing, a pilot light burner tip extending upwardly into said casing and terminating below the plane of said openings, and a guard within and wholly supported by said casing above said burner tip and below said openings and having a hole above said burner tip and a number of additional holes smaller than said hole which is above said burner tip.

9. A device of the character described comprising a pilot light casing having a series of flash openings therefrom and a series of air inlet openings in its lower end, a removable and releasable cover for said casing having a number of holes therethrough one of which is above one of said openings and is of larger size than any of the remainder of said holes, a pilot light burner tip extending upwardly into said casing and terminating above the planeof said inlet openings and below said flash openings, supporting means in said casing, and a guard within said casing and wholly supported by said supporting means above said burner tip and below said flash openings and having a hole above said burner tip.

10. device or the character described comprlsing a pilot light casing having a se-' ries of flash openings therefrom and a series of air inlet openings at its lower end, supporting means in the casing below said flash openings, a guard mounted wholly within the casing and wholly supported by said supporting means and having a central hole therethrough, a pilot light burner tip extending upwardly into said casing and terminating above the plane of said inlet openings and below said hole through said guard, and a cover for said casing having a series of holes therethrough.

11. A device of the character described comprising a pilot light casing having a series of air inlet openings above its lower end, a tube opening from one side of said casing for directively controlling a pressure wave resulta support in said casing below the openings to said tubes, a guard within the casing and wholly supported by said support and having its upper surface below the openings to said tubes and being provided with a central hole, and a pilot light extending upwardly into said casing and terminating above said inlet openings and below said hole through said uard. g 12. A device of the character described comprising a pilot light casing having a series of air inlet openings above its lower end, a tube opening from one side of said casing for directively controlling a pressure Wave resulting from ignition of gas in said tube, a laterally extended tube opening into the opposite side of said casing from said first named tube, a support in said casing below the openings to said tubes, a guard Within the casing and wholly supported by saidsupport and havingits upper surface'below the openings to said tubes and being provided with a central hole, a pilot light extending upwardly into said casing and terminating above said inlet openings and below saidhole through said guard, and a cover mounted on the upper end of said casing and having a relatively large hole therethrough above the opening to one of said tubes and also having therethrough a number of smaller holes.

13. A device of the character described comprising a pilot light casing, a number oftubes rigid with and opening into said casing, means in connection with said tubes for holding said casing and said tubes in proper relatfonship to gas burners, supporting means in said casing below the openings to said tubes, a guard in said casing mounted on said supporting means and having a central hole therethrough and a series of holes between said central hole and the wall of said casing, a pilot light burner tip in said casing below said central hole in said guard, and a lower end Wall attached to said casing below said burner tip.-

CARL E. M ETHTTDY CERTIFICATE OF CORRECTION.

Patent No. l, 739, 851.

Granted December 17, i929, to

CARL E. METHUDY.

It is hereby certified that the above numbered patent was erroneously issued, to "Methutly Enamel Range 00.", whereas said patent should have been issued to "Methudy Automatic Lighter Company, oi East St. Louis, Illinois, a Corporation of Illinois", said corporation being assignee of the entire interest in said inven tion, as shown by the records of assignments in this office: and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1930.

LSeal l M. .l, Moore,

Acting Commissioner of Pat ents,

CERTIFICATE or connse'rion.

Patent No. 1,739,851.. Granted December 17, 1929; to

CARL E. METHUDY.

it is hereby certified that the above numbered patent was erroneously issued to "Methudy Enamel Range Co.", Whereas said oatent should have been issued to "Methudy Automatic Lighter Company, of East St. Louis, illinois, a Corporation oi iliinois", said corporation being assignee of the entire interest in said invention, as shown by the records of assignments in this otiiee; and that the said Letters Patent shouid he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1930.

hi. J. Moore, (Seai) Acting Commissioner of Patents.

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