US196981A - Improvement in devices for lighting and extinguishing gas - Google Patents

Description

E. LINDSLEY. Device for Lighting and Extinguishing Gas.

No. 196,981. Patented Nov. 13,1877.

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UNITED STATEs PATENT @FEIGE.

EDWARD LIN-DSL-EY, oFoLEvELANn, 01110.-

IMPROVEMENT IN DEVICES FOR LIGHTING AND EXTINGUISHING GAS.

Specification forming part of Letters Patent No. 196,981, dated November 13, 1877; application filed September 13, 1877.

To all whom itanay. concern:

Be it known that I, EDWARD LINDsLEY, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Gas-Burners; andI do hereby declare the following to be a full, clear, and exact description of the invention,

such as willenable others skilled in the art to whichit pertains to make and use it, reference beinghad to the accompanying drawings, which form part of this specification;

My invention relates to an improvement in gas-burners, designed more especially for that kind of gas-burner wherein the gas islighted and extinguished by varying the pressure within the main.

My invention consists in acup or shellcontaining mercury or other sealing fluid, and

within that shell or dome a seconddome, with its edges depending'and dipping into the mercury, so as to be sealed thereby. This inner shell or dome carries pipes, which supply gas to the main burner and to a small day-burner, which maintains a jet during the day-time, the device being so constructed that the pressure of gas within the mains may operate at the'proper intervals to let on gas or to extinguish it, as may be desired.

In the drawing,Figure 1 is a longitudinal central section of a burner embodying my invention. Fig. 2 is a plan-view of the interior.

A is the pipe, which, for the purpose of this .description, I-will denominate the main, from which gas is supplied to the burner. B is the shell or case, which contains a mercury-cell, B; G isthe interior movable dome or shell, which bears the pipes leading to the burners. D is an elevated central portion, containing mercury-cells D and D E is the main-burner pipe; F, the day-burner pipe. G is a cup, 10- catedontop-of the interior shell or dome (l,- and surrounding the pipe F. 'H'is the day burner, secured to the frame, whichis attached rigidly at H tothe outer shell or case. H is a tube leading down around the tube F, dipping into the mercury in the mercury-cup Gr. H 'is a central tube, closed at its top, and likewise coming down around the day-burner tube F, and terminating above" the surface of the mercury. The day-burner tube F is provided at its bottom with a free opening for the inlet of gas at the proper moment. A short distance above its bottom it is provided with a small orifice, j, and atits top with an outlet, f.

The operation of this device is substantially as follows: Gas is introduced through the main A to the interior of the shell 0. Now, during the day-time, the bottom of the pipes E and F are immersed beneath the level of the mercury in the mercury-cells D D. This day pressure of gas being low, it does not lift the shell G,b ut a small jet passes in through the orifice f, the size of which may or may not be made adjustable by a screw or other device. The gas passes thence up through the tube F, out of the orifice f, down under the tube H and up to the day-burner H, thus supplying this day-bruner with a small jet, which is maintained during the day.

When it is desired to light the main burner E at night, proceed as follows: Pressure is introduced through the mainA; this exerts pressurebeneath the shellC to lift this shell, and with it the pipes E and F. Asthe pipes E and F are lifted out from the mercury in the cups D D, the gas flows fieely through both pipes. As it flows through the pipe E it sup- .plies the main burner at its top. Just as soon as the pipe F has been lifted from the mercury 'so. as to free its end, the gas passing freely j through it will cause along vertical jet to issue :up from the day-burner H. Now, as the case 3 or shell rises it carries with it the pin K. This fpin operates with a vibrating or pendulous cam, K so that as the shell 0 rises by an increase of pressure this pin will deflect the cam, so thatwhen the pressure is reduced toa burning pressure the pin will rest in such a position in the cam as to hold the main burner open until, by a subsequent increase and dimi nution of pressure, the pin is again brought to its original position, and has permitted the pipes to descend-sufficiently to close off the gas from all except the day-burner. The rising motion carries the pin L upward, and this pinL, operating upon thearm L of the lever I1 turns this lever about its pivotal point L thus opening a passage, M, in the top of the dome, throughwhich the long slender jet from the burner H passes, and ignites the main jet from the main burner E. This upward pressure, however,.of the gas soon forces the case or dome 0 so far upward that the mercury in the cup G rises sufficiently far to close the bottom of the inner tube H thus stopping all flow through the, tube F, and entirely extinguishing the day-burner.

The cam K (shown detached at the bottom of Fig. 1 of the drawings) is in such a shape that as the pin Krises, by the impulse of the increased pressure in the main, it will find its seat when this pressure is diminished, permitting the pin to rise in the notch K of the cam. In this condition it will remain until it is desired to turn off the gas in the main. At that time the pressure of gas is again slightly increased, causing the pin K to rise to the point K in' the cam K The pressure is then di-- minished, and as the case 0 drops, this pinK will pass down in the cam K until it again reaches the bottom, or the point from which it started. As the case passes down the end of the tube H? is soon released from the mercury in the cell Gr. As soon as it is thus released,

the end of the pipe being still free, a strong jet of gas will pass up through'the burner H, and out through the opening M, and be ignited from the main burner E. The further descent of the case 0 will cause the lower end of the main-burner tube E to dip into the mercury,

thus cutting off the flow of gas through it. At the same time the lower end of the pipe F will pass into the mercury in the cup D thus cut- I ting off the strong flow of gas through it, permitting it to be fed onlythrough the small orificef, which will maintain but a small flame during the day.

. At N is a washer, which serves simply to guide the pipe of the main burner,and is perforated for the free passage of gas.

The depending edge of the interior shell or dome U is enlarged at 0 along that portion which is submerged beneath the mercury. This is for the purpose of giving greater buoyancy, so that the pressure of gas will operate more readily to lift the dome C. At the same time that this enlarged portion emerges from the mercury its buoyancy will readily diminish, and the pressure of gas is prevented from acting too suddenly upon the case 0. This enlarged portion 0 is hollowed out along its upper edge at O and is connected by small passages c with the mercury in the cell B. This recess is for the purpose of scooping up and carrying up for a certain distance a charge of mercury, which charge gradually wastes down through the orifices 0 thus assisting in preventing the pressure of gas from acting too suddenly upon the interior of the dome O.

, The object in preventing this sudden ris ing of the dome O is as follows: It is apparent that the main burner E, at the time of lighting, is filled with air instead of gas, and gas cannot enter it until the lower end of the pipe emerges from the mercury. It will then take an appreciable time for this air to become expelled, so that a flow of gas may be had from the burner. Now, the long slender jet from the burner is maintained only from the time the bottom of the tube F leaves the mercury in the cell 1) until it rises sufficiently to close off the bottom of the tube E. It is therefore necessary to make the motion of the case 0 sufficiently slow thatit shall not pass over this space until all the air has been expelled from the tube E, and free gas is passing fromtheburner otherwisethemainburner would not be ignited bythe jet fromtheburner H; or, in other words, the burner H would have thrown out its long slender jet and have subsided before the main burner was supplied with gas.

P is a wind-cap set over the burner H. It is provided with an opening at its top for the passage of the long jet, and which assists, with the smaller openings at its side, to ventilate and supply oxygen to the interior flame.

Q is a wind-cap set over the entire'device, perforated at its central upper point for the passage of the main-burner pipe. It is also provided with ventilation-holes at thetop, and with orifices Q which open into an annular orifice or groove, Q, in the wind-cap Q, and this is at intervals connected with the external air. The object of this indirect communication is to prevent any sudden fluctuations or draft of air upon the interior of the burner, which may extinguish the day-burner.

Instead of locating a tube, H within the tube H the tube H may be made thick, with an offset on its inner end, which offset shall extend up to the point now shown as the lower end of the tube H The space now existing between the separate tubes H H would then be supplied by longitudinal perforations leading in the same way up to the burner H.

What I claim is 1. In a gas -burner designed for lighting and extinguishing by varying the pressure within the main, the combination of the shell B, provided with the mercury-cell B and mercurycells D D a movable shell or dome, 0, bearing pipes E and F, the mercury cup or cell G, and pipes H H substantially as and for the purposes described.

2. The mechanism for supplying and cutting off gas at the day-burner, consisting of the movable pipe F, provided with small ori-. fice f, mercury-cells D G, and tubes H H substantially as and for the purposes dcscribed. I

3. The combination, with the mercury-cells and burner-pipes, of the pins K and pendulous cam K whereby the main burner, by an increase and subsequent diminution of pressure, is fixed in an open condition, and bya subsequent increase and diminution of pressure the gas is cut off fromthe main burner, substantially as and for the purposes described. I

4. The combination, with the pin L, secured to an attachment of the movable shell or dome O, of the lever L L and passage M, substantially as and for the purposes described. v v v 5. The combination, with the wind-cap, of

with Waste'passages 0 substantially as and for purposes described.

7. The pipe F, provided with an open lower end and small perforation f, in combination with the movable shell 0 and mercury-cell D substantially as and for the purposes de scribed. t

In testimony whereof I have signedmy name to this specification in the presence of two subscribing Witnesses.

EDWARD LINDSLEY.

Witnesses F. TOUMEY, W. E. DONNELLY.

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