A. W. WEBER.
GAS STOVE IGNITER. APPLICATION FILED DEC. 22, 1913.
1, 1 26, 1 42. Patented Jan.26, 1915.
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ANDREW W. WEBER, OF JACKSON, MICHIGAN.
Specification of Letters Patent.
Patented Jan. 28, 12315.,
Application filed December 22, 1913. Serial 0. 808,205.
To all whom it may concern Be it known that 1, ANDREW W. WEBER, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Gas-Stove Igniters, of which the following is a specification.
This invention relates to stoves generally and particularly to that class of such devices wherein the burners are automatically lighted from a. device manipulated by the operator.
Morespecifically the invention relates to a gas stove having a plurality of burners adapted to, be lighted from a single lighting device located properly with respect to the several burners and arranged upon manipulation by the operator to project flames over each of the burners and produce the lighting thereof, the device containing a small pilot for producing initial ignition.
The invention may be further briefly summarized as consisting in the construction and combination of parts hereinafter set forth in the following description, drawings and claims. I Referring to the drawings, Figure 1 is a top plan view of a portion of the top of a. stove with my igniter applied thereto; Fig. 2 is a longitudinal. vertical sectional view showing the parts; Fig. 3 is a section upon the line 33 of Fig. 4; and Fig. 4 is a top plan view of the igniter head with the cap removed. A
In carrying out the invention any preferred form of stove may be provided with my device but I have shown a popular con-- struction in the drawings wherein 1 represents a top plate having, as shown, four burner openings 2 below each of which is a suitable burner 3, each of which is provided with its own mixing device 4 arranged in conjunction with a suitable gas jet 5 and controlling valve 6 arranged upon a gas manifold 7. The description thus far has been confined to a stove structure which may be of any form, but the arrangement set forth is of a well known form and is capable of forming a part of the combination.
Mounted in the gas connection 8 in the manifold 7 isa casing 9 provided with a gas-connection10 secured in the cdnnection 8.; This connection 10 has a suitable opening 11 therethrough for supplying gas to a gas .chamber- 12 arranged in the casing.
This gas chamber12 communicates by a suitable opening 13 with an enlarged opening it adapted to receive a sleeve 15 slidably mounted in the enlarged opening 14, and hav- 19 formed within the casing about the open-- ing 13. This valve 18 by its cooperation with its seat 19 when the igniter is not in operation, serves to prevent the leakage of gas back through the parts around the finger piece or button 16. Surrounding the stem 17 is a coil spring 20 thrusting against the inner side of the finger piece or button 16 and bearing against the casing and tending to throw these parts to the left as shown in Fig. 2 and seat the valve 18 against its seat. The head of the valve 18 is preferably recessed at 21 for a purpose to be described. Threaded into the casing at the chamber 12 is a gas pipe or tube 22 extend. ing toward the center of the stove, as shown in Fig. 1, to a point substantially midway between the several burners, and atits inner end it is threaded into a valve casingmember 23 provided with a gas opening 2 1 establishing communication between the gas pipe or tube and valve chamber 25. The valve chamber 25 is larger in diameter than the opening 2 1, and the shoulder formed at the junction of *these two openings provides a valve seat 26 at this point. Cotiperating with this valve seat is a plunger valve 27 having an opening 28 for receiving a spring 29 thrusting against the plunger valve and against the bottom of a socket recess' 30 formed in a threaded plug or screw 31 screwed into the opening 23. By this arrangement it will be seen that the plunger valve will be normally seated. The plunger valve is less in diameter than the bore of the chamber 25 so that gas may flow around it. Mounted within the opening 24 and less in diameter than said opening so as to allow the free passage of gas around it, is an op.- erating rod 32., the forward end of which engages in a recess 21 formed in the head of the valve 18, and this rod is of a length such that when one of its ends is=- in the re cess 21 the other end is in close proximity to the left .end, as shown in Fig. 2, of the lot ing 33 communicating with the chamber and an auxiliary pilot opening 34, also communicating with the chamber 25 and arranged on one side of the opening 33. The auxiliary .pilot opening is also utilized in flushing the ignition and mixing chamber to be described so that primary ignition will take place within the casing, thereby causing immediate ignition .of the streams of gas flowing from the orifices 40. The caslng 1s still further provided with an initial pilot supply opening 35 which is controlled by a needle valve 36 mounted upon a threaded shank 37 threaded into the casing and having on the end thereof a suitable thumb piece 38. The needle valve 36 is tapered and fits snugly within a seat which is larger than the area of the opening 35 and extends across the same whereby when the needle valve is seated, as shown in Fig. 3, there is no discharge'of gas through the initial pilot since the opening 'will be entirely closed. The opening 35 communicates with the open ng 24 so that it will always have a supply of gas from the pipe 22.
Mounted in: the enlarged part of the opening33' in the valve casmg 2 3 is a lighter jet 39 having lighter openings 40 in the side wall. There is one of these openings for'eac'h of the burners of the stove and they are so located that one pomts toward each burner. This jet is also provided with a lower flange 41. Secured in an-enlargement of the pilot openin 35 is a pilot tip 42 having an orifice 43 For discharging gas which burns in a small pilot flame above this pilot tip. Engaging the u per surface of the valve casing member 2; is a cup-shaped ignition and mixing casing 44 having openings 45 in the bottom, one on each side of the central web 46. This web 46 is provided with an opening for receiving the shank of the tip 42, an opening for receiving the shank of 'the jet 39 and an opening 47 for permitting the discharge of gas through the opening 34. This ignition and mixing chamber 44 is also provided with openings 48 arranged in the side wall thereof. There is one of these openings 48 for each burner and each opening is in a line with one of the openings 40 in the jet so that a flame from the jet may be projected through the opening to the corresponding stove burner. A cover 49 is provided upon this cup-shaped member and serves as a closure for the top thereof.
In operation the pilot valve-36 is set so as to permit a small pilot flame to extend above the pilot tip 42, and this flame is left burning for any length of time, preferably at all times. When the operator wishes to light a burner he turns the proper valve to that burner and presses the button 16 inward with the result that the plunger valve 27 will be opened in the manner described and gas will be supplied to the jet 39 whence pointed streams of gas will be projected through the openings 40 and will be ignited from the pilot flame. These jets of flame draw air in through the openings 45, in this way there is a partial mixture of gas and air due to a slight Bunsen action in the ignition and mixing casing.
Having described my invention, I claim 1. An igniter for gas stoves comprising a gas connection, a lighter operating device carried thereby, an i iter head comprising an Elg'l'lltGI casing, a et member within said casing, valve mechanism within said igniter head for controlling the supply of gas to said et, means for supplying gas from the gas connection to the igniter head, and means arranged between the operating device carried by the. gas connection and extending through the gas supply adapted to cooperate with the valve mechanism in the igniter head to operate the same.
2. In an i ition device, a gas connection, an ignlter operating device carried thereby, an igniter head, an igniter jet mounted therein, valve mechanism carried by the igniter head for controlling the supply of gas to said jet, a gas supply pipe connecting the gas connection and the igniter head, and an operating rod arranged between the operating device carried by the gas connection and the valve mechanism arranged in the igniter head.-
3. In a gas stove igniter, a gas connection, an operating device carried thereby, an igniter gas supply pipe leading from said gas connection and an igniter head mounted on the outer end of said igniter gas su ply pipe and comprising a valve member having an internal valve seat, a valve cooperating with-said seat, an igniter gas jet mounted on said valve member, a mixing casing surrounding said jet, and an operating rod extending between the operating device carried by the connection and the valve mounted in the igniter head valve member.
4. In an ignition device for gas stoves, an ignition head, an ignition gas suppl pipe connected thereto, an ignition contro ing device mounted in said head, a casing having a gas connection mounted at the other end of said ignition gas suppl pipe, valve actuating means extending t rough the ignition gas supply pipe, an actuating device carried by said gas connection 'and comprising a valve seat in the casing, a valve stem slidably mounted within said seat, avalve carried by said stem, a spring normally tending to close said valve and prevent the leakage of gas about said stem, and an actuatin button carried by said stem and projecting beyond the outside of the gas connection.
5. In an ignition device for gas stoves, a gas connection, an actuating device carried thereby, an ignition gas supply pipeleading from the gas connection, an lgnitlon head mounted on the other end of said ignition gas supply pipe comprising a valve member, a controlling valve mounted therein, an ignition gas jet mounted on said member and communicating therewith, a mixing casing about said jet, a pilot leading from the gas space on the supply side of said valve member into the mixing casing,
and suitable operating means between the device and the valve in the ignition head.
6. In an ignition device for gas stoves, a gas connection, an actuating device carried thereby, an ignition gas supply pipe leading .from the gas connection, an ignition head mounted on the other end of said ignition gas supply pipe comprising a valve member, a controlling valve mounted therein, an ignition gas jet mounted on said valve member and communicating therewith, a mixing casing about said jet, a pilot leading from the gas space on the supply side of said valve into the mixing casing,
suitable operating means between the actuating device and the valve in the ignition head, and means for regulating the flow of gas through the pilot.
In testimony whereof ll afix my signature in presence of two witnesses as follows:
I ANDREW W. WEBER. Witnesses:
G. O. FARQUHARSON, C. H. Tween.