US700857A - Incandescent gas-burner. - Google Patents

Description

Patented May 27, I902.

B.. TAYLOR. INCANDESCENT GAS BURNER.

(Application filed Jan. 3, 1902.)

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UNITED STATES PATENT OFFICE.

ISRAEL B. TAYLOR, OF BUFFALO, NEW YORK.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 700,857, dated May 27, 1902. Application filed January 3, 1902. Serial No. 88,308. (No model.)

To all whom, it may concern:

Be it known that I, ISRAEL B. TAYLOR, a citizen of the United States, and a resident of Bufialo, Erie county, State of New York, have invented certain new and useful Improvements in IncandescentGas-Burners; and my preferred manner of carrying out the invention is set forth in the following full, clear, and exact description, terminating with claims particularly specifying the novelty.

This invention relates to gas-burners, and more especially to that class which produce a blue flame by the consumption of a little gas and considerable air, which are properly mixed, and wherein the light is the result of striking this blue flame on amantle popularly known as the Welsbach, so that the true source of illumination is the incandescence of this mantle due to the heat supplied by the Bunsen burner; and the object of the same is to produce a burner of this type which may be used with either natural or artificial gas under different pressures and which will avoid the common difficulty resulting from the flashing back into the mixing-chamber of the blaze at the burner-head.

To these ends the invention consists in certain details of construction hereinafter pointed out and claimed, and as illustrated in the accompanying drawings, wherein- Figure I is a side elevation of this burner complete, the mantle, chimney, and globe being shown in dotted lines, since they form no part of the present invention. Fig. II is a central vertical section of this burner. Fig. III is a section through the mixing-chamber, taken on a line at right angles to the section in Fig. II. Figs. IV and V are details of the parts of the mixing-chamber detached and slightly separated. Fig. VI is a perspective view of the damper removed.

Referring to the drawings, 1 is the supply,

which takes the place of the ordinary burner and is preferably interiorly threaded at its lower end, as at 2,-so that it may be applied to any chandelier or bracket. In the upper end of this supply is a nipple 3, pierced with a fine aperture when used with natural gas or gas under heavier pressure and with a coarse aperture (or a plurality of fine ones) when used with artificial gas or gas under a lighter pressure. This nipple may be made removable from or adjustable in the source of supply without departing from the spirit of my invention.

The mixing-chamber comprises upper and lower members. (Best seen in Figs.IV and V, where they are separated.) The lower member comprises a slightly-dished body 4, having an opening 5 through its center, and within this body is a transverse strip 6, preferably cast to the body and extending across the opening 5, although of less width, so that such opening is not entirely closed thereby, and through the center of this strip is a threaded hole 7, into which the supplyl is screwed, as shown in Fig. II. The ends of the strip are turned up into lugs 8, pierced with fine apertures 9, and a flange 10 surrounds the body 4:. The upper member 11 is dome-shaped, as best seen in Fig. II, with a threaded hole 17 at its top or apex, and a flange 2O surrounds its body. From this flange depend fingers 18, which are spaced from each other, so as to leave openings 15, and the lower ends of these fingers rest normally upon the flange 10. Through two of the fingers at diametrical points are formed apertures 19, adapted to register with those numbered 9 in the lugs 8, and into these two pairs of apertures when theyaline are driven pins 16, whose length is suflicient to cause their outer ends to stand flush with the outer face of the upper member of the chamber when their inner ends stand against the sides of the supply 1. When the latter is unscrewed, these pins may be pushed inward to separate the two members of the mixing-chamber.

.Inadjusting and regulating the supply of air to the mixing-chamber I use a damper. (Best shown in Fig. VI.) This damper consists of a band or collar 21 of thin metal formed with openings 25 and apertures 29, the former adapted to be brought into register with the openings 15 and the, latter with the apertures 19, for which purpose the damper obviously may be turned around the fingers 13. This damper can be removed or replaced when the two members of the mixing-chamber are separated.

Into the hole 17 at the top of the upper member ll-is screwed what I call the mixingflue, which is a comparatively long and small tube 30, (say between five and six inches in length,) and in the upper end of this :tube are formed notches 31.

The burner-head is designated by the numeral 40 and comprises a casting provided with an interior unthreaded bore 41, larger than the exterior diameter of the tube 30 from the lower end of said bore for a considerable distance upward. Thence it tapers slightly inward, as at 42. This taper terminates in a shoulder 43, and above the shoulder is a smaller bore 44, leading out the upper end of the burner-head and constituting the real burner where the mixed gas and air strike the mantle. From this construction it results that after the air is mixed in the lower part of my device and the air and gas pass up the flue 30 additional air is taken in, as shown by the arrows 45, enters the notches 31, and is burned within the mantle. By preference the lower end of the burner-head is enlarged, as at 46, to form the gallery, which may support the chimney. This gallery may have fingers 47 supporting the globe, and through the gallery may pass the mantlesupport, which can be held by a set-screw or otherwise, all these details forming no essential feature of the present invention.

The parts are preferably and entirely of metal and are of the desired sizes, shapes, and proportions. The support being screwed upon W the gas-fixture and the gas turned on, a certain amount of air is always drawn in through the openings 5 and mixes with the gas in its passage through the nipple 3. The damper is adjusted to permit a large volume of air to enter the mixingchamber, and the combined air and gas pass upward through the flue. The air admitted at 45 is heated, because the surrounding metal of the burnerhead is quite hot, and this heated air passes in through the notches 31 and combines with the mixed air and gas, which burns with a steady blue flame and will not flash back into the mixing-chamber, as experiments have proven. It is probable that this undesirable ignition of the mixed air and gas within the chamber is avoided, owing to the'fact that while the air enters the side openings and mixes with the gas, as usual, the air which enters the bottom opening 5 is'drawn upward with considerable velocity by the draft created within the mixing-flue 30, which draft is so strong as to prevent the flame from flashing backward through the tube, which is comparatively long and of rather small bore. This draft is obviously created by the suction set up through the air admitted to the burner-head at the upper end of the flue, as .herein explained. If the pressure of the gas be changed or gas of a different kind be used, another nipple may be substituted or an entirely new supply-tube with a dilferent nipple or difierent size or style of orifice. The

lower parts of this device are screwed together and can be disconnected, as is clear. The burner-head may at any time be lifted 01f of the flue when attention to the mantle the chimney or globe is supply-tube, and the nipple; of the mixingchamber Whose bottom is slightly dished and provided with a central opening, and a transverse strip within and connected with said bottom, passing across and narrower than said opening, and provided with a threaded hole concentric with such opening and adapted to engage the supply-tube.

2. In a burner of the type described, the combination with the supply-tube and nipple; of a mixing-chamber comprising two members, perforated lugs on-the lower member. fingers on the upper member provided with perforations adapted to aline with those in said lugs, and pins entering the alined perforations with theirinner ends standing against said supply-tube.

3. In a burner of the type described, a mixing-chamber comprising two members, perforated lugs on the lowermember, spaced fingers on the upper member two of which are provided with perforations adapted to aline with those in said lugs, a damper surrounding and adapted to turn around said fingers and having similar diametricallyopposite perforations, and pins insertible through the alined perforations in the three members and adapted to stand within the perforations of the two innermost.

4. In a burner of the type described, a mixing-chamber comprising two members, perforated lugs on the lower member, fingers on the upper member provided with perforations adapted to alinewith those in said lugs, pins entering the alined perforations, and removable means for holding said pins with their heads flush with the outer face of the upper member.

5. In a burner of the type described, the combination with the supply-tube and nipple 5 of a mixing-"chamber comprising two members, perforated lugs on the lower member, spaced fingers on the upper member two of which are provided with perforations adapted to aline with those in said lugs, a damper surrounding said fingers and having similar diametrically opposite perforations, and pins entering the alined perforations with theirinner ends standing against said supply-tube.

6. In a burner of the type described, the combination with the mixing-chamber having air-inlet openings in its sides and also in its bottom, and a damper for regulating the size of the side openings; of a strip passing across but narrower than the bottom opening, a source of gas-supply entering the bottom of said chamber and passing through said strip, a long cylindrical mixing-flue rising from its top and of smaller diameter than said chamber, and the burner-head at the upperend of said flue.

has

7. In a burner of the type described, the

combination with the gas-supply, the mixingfiue, and the burner-head; of the mixingchamber comprising a dished lower member and a dome-shaped upper member into the apex of which latter said flue is threaded, a transverse strip integral with and extending across the interior of the lower member which latter is providedwith a hole of greater diameter than the width of the strip and remaining always open to admit some air, lugs at the extremities of this strip, spaced fingers depending from the upper member and adapted to pass outside the lugs, means for adj ustably connecting the latter with two of said fingers, and a damper for adjusting the size ofthe openings between such fingers.

8. In a burner of the type described, the combination with the burner-head, the mixing-flue, and the mixing-chamber comprising upper and lower members with side openings and a damper therefor; of a'transverse strip integral with and extending across the in terior of the lower member which latter is provided with a hole of greater diameter than the width of the strip and remaining always open so as to admit some air, the gas-supply passing through said strip, and means at the extremities of the latter for detachably connecting the members of the mixing-chamber.

9. In a burner of the type described, the

combination with the mixing-chamber having adjustable air-inlet openings, and a source of gas-supply; of a mixing-flue rising from said chamber and having notches in its upper extremity, and a burner-head comprising a solid casting having at its lower enda cylindrical bore surrounding and larger than the flue and at its upper end a tapered "bore adapted to rest at the extremity of the flue whereby additional air is admitted into the fine radially through said notches.

10. ha burner of thetype described, the combination with the mixing-chamber having adjustable air-inlet openings, and a source of gas-supply; of a mixing-fine rising from said chamber and having notches in its upper extremity, and a burner-head having a gallery at its lower end and an interior bore larger at its lower end than the exterior of said flue, thence tapering inward so as to rest at the upper end of the flue whereby additional air is admitted through said notches, then shouldered, and terminating at its upper end in a smaller bore.

In testimony whereof I have hereunto subscribed my signature this the 30th day of De= cember, A. D. 1901.

ISRAEL B. TAYLOR.

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