US2093152A

US2093152A - Lighter

Info

Publication number: US2093152A
Application number: US649782A
Authority: US
Inventors: Harold A Mantz
Original assignee: Milwaukee Gas Specialty Co
Current assignee: Milwaukee Gas Specialty Co
Priority date: 1933-01-03
Filing date: 1933-01-03
Publication date: 1937-09-14
Anticipated expiration: 1954-09-14

Description

LIGHTER Filed Jan. s,v 1935 INVENTOR.

z ATTORNEY;

atened Sept. idg Tg3? naires stares garant naar Application danuary il, 11933, Serial-No. 649,732

3 Claims.

This invention relates generally to lighting devices, and more particularly to lighting devices for gas burners, and is in the nature oi an improvement in that type oi lighting device dis- 5 closed in the Schaetzel U. S. Letters Patent No. 1,134,350 of April 6, 1915, and Leiris U. S. Letters Patent No. 1,747,015 of February l1, 1930.

Among the objects of the present invention are to simplify and compact the structure of a light- ,10 ing device of this character and to render the same susceptible of easy and economical manufacture from materials and by means of iaciiities ordinarily available.

Another object of the invention is to provide a lighting device which insures the aiiixture of a sufficient amount of air thereby insuring eincient action and precluding the generation of carbon monoxide.

Another object of the invention is to provide a lighting device having these advantages and which is easily and conveniently adjusted and regulated and which, when installed, is efficient, safe and reliable in its action.

Other objects and advantages reside in certain novel features of the construction, arrangement and combination of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawing, forming a part of this specication, and in which:

Figure l is a fragmentary plan view showing the lighting device embodying the present invention installed on a gas stove;

Figure 2 is a fragmentary sectional view taken in the plane of line 2 2 of Figure 1, with parts shown in elevation for the sake of simplicity in illustration;

Figure 3 is a fragmentary view in horizontal section taken on line 3 3 of Figure 2;

Figures 4 and 5 are fragmentary views in transverse vertical section taken on lines 4 4 and 5 5, respectively, of Figure 2; and

Figure 6 is a fragmentary perspective view illustrating the tip end of the pilot burner.

Referring to the drawing, the numeral I designates generally a gas stove having the usual burners 2 supplied with gas or fuel from a fuel supply pipe 3 and valve controlled branches 4.

The lighting device embodying the present invention comprises: a pipel 5 having one end threadedly connected with the lfuel supply pipe 3 and having its other end threadedly connected.

with the body 6 of a. pilot burner. The pipe 5 serves to support the pilot burner as well as to 5 supply fuel to the chamber 'I thereof. The body 'packing i3 at its other end. This spring lll is 15 `the packing. The pilot burner is of the Bunsen 5 of the pilot burner has a. tubular extension lined for a portion of its extent by a bushing t (see Figure 2) and having its open end constituting the tip or iame end of the pilot burner. Between the body S and the extension there is 5 provided a ported partition i0-with which a needle valve ii coacts to regulate the amount of iuel flowing to the tip of the burner. The needle valve extends down through the lower end of the body t and is provided with an operating knob 10 i2. Packing I3 is provided for the needle valve. In order to hold the needle valve in adjusted position, a spring I #l is mounted on the shank thereoi and engages the knob I2 at one end and the under compression and sets up sufficient frictional resistance between the threads of the needie valve and the threads of the body t and also suiiciently compresses the packing i3 to hold the needle valve in any oi its various adjust- 2c ments. The spring also enhances the action of type and hence is provided with air admission l openings I5 in the tubular extension 8. A collar it is threaded on the tubular extension E and 25 may be turned down to partially block the air admission openings i5 and thereby aid in regulatlng the proportions of air and fuel in the combustible mixture.

A hood designated generally at Il is provided 30 for the pilot burner and is in the form an inverted cup having its peripheral wall i8 of cylindrical form and its top in the form of a iiat plate I9.V The lower end of the cup-shaped hood v4is closed by a bottom plate 20 having a. ange 2| 35 snugly or frictionally fitted in the lower end of the body portion of the hood and having lugs 22 pressed outwardly therefrom and engaged in corresponding notches 23 provided therefor in the body I8 of the hood. The friction or press 40 fit of the flange of the bottom plate in the hood is sufficient to retain the parts assembled while the lugs 22 coact with the notches 23 to limit the extent to which the bottom plate can move into the hood. Both the top plate ls and the bottom. 4l plate Y20 are formed with openings I 9 and 20', respectively. of suiicient size and number to insure an adequate supply of air to the pilot burner thereby precluding the generation of carbon monoxide and providing for the full support of l combustion at the pilot burner.

The hood I1 is supported on the tubular extension 8 near its flame end and in such manner that the knob I2 and collar I6 are disposed exteriorly of the hood and thereby accessible H for convenient adjustment. For this purpose, the extension 8 adjacent its upper end is formed with fiats 50 and with shoulders 5| at the lower ends of these flats. A washer 52 having an opening corresponding in cross section to the upper end of the tubular extension 8 is fitted thereon and engages the shoulders 5|. 'I'he portion of the tubular extension 8 above the washer 52 projects through an opening provided therefor in the bottom plate 20 and of a shape corresponding to the cross sectional shape of the upper end of the tubular extension 8. The portion of the extension 8 which extends into the hood has a nut 53 threaded thereon, the nut clamping the bottom plate against the Washer 52 and thereby supporting the hood in position.

The peripheral wall of the pilot burner is provided with a plurality of openings 25, one for each main burner 2. Slidably and tiltably fitted in each opening 25 is the inner end of a tube designated at 26. Each tube 26 is rectangular in cross section and may be formed up of sheet metal as shown. While, as indicated, each tube has its inner end slidably and tiltably fitted in its opening 25, complete withdrawal of the inner end of any of the tubes from the hood accidentally is precluded by the provision of a boss 21 struck out from one wall of each tube and engageable with the adjacent marginal edge of its opening 25 to prevent such withdrawal. The tubes 26 being constructed of sheet metal have some resiliency and this property is utilized in assembling in that the Walls on which the bosses 21 are formed may be sprung or flexed sufilciently to permit the bosses 21 to be forced in through the openings 25 when assembling the tubes 26 with the hood I1. The outer end of each tube 26 has its lower wall extended beyond its upper wall as indicated at 28, has its side walls cut away or formed with openings 29 and its lower wall inwardly of its outer end formed with an opening 30. Beyond the opening 36 'the lower wall is provided with a second opening 3| which receives the nipple 32 of a flashing tip designated generally at 33. The nipple 32 oi the flashing tip has portions upset or struck out as indicated at 35 to secure it to its tube 26. The bore or opening of the nipple 32 communicates at its inner end with a similar opening 36 formed in the body of the flashing tip and communicating with a horizontal opening 31 extending out through the inner end of the nipple and also with a slot 38 extending through the top and both ends of the tip.,

When the lighting device is assembled with the stove the nipple 32 of each flashing tip is fitted down into an opening 46 provided therefor in the burner 2 which it serves. Such assembly of the nipples with the burners is facilitated by the free sliding and tilting mounting of the tubes on the hood. When so assembled the flashing tips are located in igniting relation to the jet or flame openings of the main burners. As illustrat-ed in Figure 2 the tubes 26 are preferably inclined upwardly from the main burners to their hood |1 so that with the pilot -burner lighted there is a .natural draft up through these tubes 26. With the lighting device of the present invention the pilot burner is constantly lighted, its flame being conveniently adjusted by manipulating the knob I2 and collar |6. Hence, when the valve controlling the supply of fuel to any of the main burners is opened, gas will flow through the ashing tip 33 associated with said main burner and issuing from the opening 31 thereof will pass up through this tube 26 into the hood wherein it will be ignited by the pilot burner and flash back to such tip 33', thereby igniting the gas issuing from its slot 38 and opening 31 and consequently igniting the associated main burner. Any irregularities in the spacing of the main burners from the hood I9 are readily taken care of by virtue of the sliding and tilting interfit of the tubes 28 with the hood |1. The pilot burner may be conveniently regulated since the means controlling the supply of fuel and of air thereto are located exteriorly of its hood and yet the provision of the hood precludes extinguishment of the ame of the pilot burner. The construction of the outer ends of the tubes 26 insures the supply of sufilcient air to preclude the generation of carbon monoxide. Further, the slanting or inclining position of-the .tubestogether with the construction of the flashing tips enhances the action of the device and insures quick ignition of the main burners. The flashing-tips being permanently interconnected with the tubes 26 are not liable to be dropped or lost and yet due to the mounting of the tubes may be conveniently assembled with the main burner. i.

While I have shown and described vone construction inwhich the present invention may be embodied, it is to be understood. that this construction has been selected merely for the purposes of illustration, and that various changes in the size, shape and arrangement of the parts may be made without departing Vfrom the spirit of the invention or the scope of the subjoined source of fuel supply, a. hood for said pilot burner, 1

an openl ended tube having one end interfitted With the hood for free sliding and tilting movement, and a flashing tip secured to the outer end of the tube and having a nipple extending downwardly therefrom and interconnected with said main burner, said flashing tip having a flame slot extending through the top and ends thereof and having an opening extending out through the end thereof adjacent said tube.

2. An automatic igniting device for the burners of a gas stove, comprising a pilot hood, a plurality of flash tubes extending from said hood toward the burners, and nipples carried by the outer ends of said tubes for engagement in outlet openings formed in said burners, said nipples having elongated slots to project a flame from the exterior of the nipple.

3. An automatic igniting -device for the burner of a gas stove, comprising a torch head, a flash tube extending from said torch head toward the burner, and a. nipple carried by the outer end of said tube for engagement in an outlet opening formed in the burner, said nipple having an elongated slot to project a flame from the exterior of the nipple.

HAROLD A. MANTZ.