US823538A - Method of mixing acetylene gas and air for heating purposes. - Google Patents

Description

- PATENTEDJUNE 19, 1906.

v A. KEITH. METHOD OF MIXING AGETYLENE GAS AND AIR FOR HEATING PURPOSES.

APPLICATION mm) APE-4.1.903.

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No. 823,538: PATENTED JUNE 19, 1906.

' A. KEITH.

METHOD OF MIXING AGETYLENE GAS AND AIR FOR HEATING PURPOSES.

APPLICATION FILED APR.4.1903.

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Specificationbf Letters Patent.-=

Ap lication-film Aim 4, 190321' sem irmisL lrsi Patented June 1 9;:-1 9065.

Te a/U whom it may concern:-

B'eit known-that L'ALEXANDERKEITE of the city of Toronto, in the county of Yorkfin the Province ofO'ntario, Canada, have invent ed certain new and useful "Improvements in Methods of Mixing Acetylene Gas and for 1 Heating Purposes ,-=of which'the following is a specification;

My inventi'on -relates to an improved method of mixing' acetylene gas and air' 'fon heating purposes and more 'especially for burning-m'connectlon wlthan ordinary man tle-burnerto heat the: mantle to incandes-- causeobstruction in the tipbyreason of deosits thereon; and with the" mantle-burner, rom this tendency to deposit and'from other causes, it has be'enheretofore impracticable to burn acetylene gas in such burners;

. The object of my invention is to overcome this difliculty, andby means of'myinvention I am able to burn'this gas in a mantle-burner without obstruction or'smoke-and withan extraordinary illuminating power.- Hereto fore attempt has been made toburn acetylenegas in amantleburnerby a direct di'scharge'of such gas unmixed througha small orifice small enough to prevent back=firing, but with openings opposite suchorifice to the atmosphere to allow the air tobe' drawn'in by the force of'the jetof gas but this fails to perfectly mix the 'gas, and as the amount of the airtaken in'depends upon'the force of the jet of gas that" amount varies with'the force of discharge of'the gas and so materially as to render the result uncertain and the method impracticable It has beenattempted to remedy the difficulty of deposit inordinary-tip open-flame burners by forcing'currents ofair against the exterior' surface of the tip and thereby lifting or removing the combustion-point fromim-- ture to-the burnerS anautomatic mixer,'bywhich l meanthat Ini connectionswithi the ordinary tip 0i an open-flame burner acetylene gas tends "to ratuspartly in"side*elevationand partly" ing'apparatus' a pipe Q-leads to 'branchip shown'in Fig. 2 had-been devised by?me:w1-

ments and *"conditi'on's vI have F devised land f' practically applied to use '1 myjiinv'e'ntibnfl 1 which "consists ina methijdf'oit' usi-ng acetya lenegas-for producinglight 'from 'anyj'suitable' source in connection" wi-th a mantle-burner' by mixing said gas *with atmospherio time any* suitable equivalent thereof in propje proportions prior *tothe :supply 'of the In order that"the apparatus' maybe'auto 'matic and-that theproportions-mayfbe mairi tainedf under- -varyirigvpressure' of the -gasy- I 5 carryoutmyinvention*prefera'blybyjmeansof 7 themixer is operated-by the pressure' 'of -th 'gasand maintains the" relativeproportions=- and at the same tirire-supplies themixtureto the burner under suitable pressur'ei This" invention I have -'il'liistratedin the ac comp-anying' drawings, which:

Figure 1 illustrates the apparatus :in auto matic form.

shows the-mixingeapp section. I 7 In the diagramofFigE "'1, S indicates "anyjz' suitable source ofsupply of the acetylenegags, from which a-pipe P leadstothemixingwapa paratus, (indicated at M, t vand from 'this' r r s such as *1, WhlClPdlIGGtlY connect' wi-t the ordinary cmantl'e-burne'rsi The special form-' of"mixingifapparatus the particular object of-beingoperat'ed byth I 0 gas-pressure 'andof producing i and'maintainw ingthe uniform" mixture- "of-the-air' i'andgas prior to supplying it to the bi1rne'rs-and, fur

ther', with the object of'renderingthe appa ratus simple in constructionwand not liabl 5'9 to derangement 'butfit will be -understood that I do not limit myself to thisspeciah foim of apparatus, nor do '1 herein fc la'irn' this 'spe cialform this being the subject offlanother application. j 1foo Referring now to Figw-2; B and--13 -i res sent gas-holders providedvrith vertic a'l'niov 1 ing bells 3 'and"water seal? Mounted upon these bellsj'but not communidatingthei'ewithl are exp ansible orb'ellows'fextensions 6 0 the 1 o 5 upper ends of Which are connected with a fixed plate i, the construction being such that the extension is collapsed, as shown at G, when the bell 3 is in its raised position, and the'bellows are extended, as shown at C, when the bell is down in the holder. These bellows are adapted to hold air and act as pumps receiving air through automatic valves 17 and 18 from the atmosphere and forcing it through valves and 16 into bellows D, as hereinafter more fully explained. Gas is supplied to the holders from the pipe P through branches 5 and 6 and an interposed three-way cock 7. These branches extend upward into the holders, as shown, and discharge therein. Thevalve is controlled by a hollow arm 8, centrally connected at its stemand provided with a weight 9, adapted to shift from end to end of the arm. This connection is through spurs, by means of which and the shifting of the weight the final movement of the valve is rendered certain and promgt. The two ends of the arm are connecte respectively, with the upper ends of the bells by chains 10 and 11, the arrangement-being such that when one end of the lever 8 is down the valve opens into the branch pipe on that side and is closed on the other. Under continued pressure, therefore, from the pipe I the holders will be filled automatically and alternately, the arm of the valve being controlled through the chains by the alternate rising and falling of the bells, and

- thus the holders are alternately filled and extended. The branch pipes 5 and 6 are supplied with suitable automatic valves at their ends. Alternate discharge of gas from these holders is effected through branch pipes 12 13, connected to a central pipe 14, discharging through a suitable automatic valve into the bellows D. The ends of these branch pipes within the holders are provided also withsuitable automatic valves. The bel- I lows D are mountedupon the plate 4, to which its bottom is fixed, and the bellows expand upwardly when supplied with the mixture of gas and air. The gas is supplied, as explained, throu h the pipe 14. The air is supplied alternate yfrom the bellows C C through the valves 15 16, opening upwardly from the bellows. These bellows receive the air from the atmosphere through the valves 17 and 18, and it will readily appear from an inspection of Fig. 2 that when the bell is rising on one side and compressing the bellows it is discharging the air contained therein into the bellows D, while the downward movement of the bell on the other side expands the bellows and takes in air through its proper valve also, that the reverse operation is the same. It will also be evident that while thegas isentering through the pipe 6for example, on one sideit is by this expansive force compressing the bellows onlgthat side, and thus forcing air into the bellows D whileat the same time the gas is also passing through the pipes 13 and 14 into the bellows D. Meanwhlle the bellows C are taking in air. The proportions of air and gas are determined by the relative dimensions of bellows D and C. The bells are returned to their depressed condition by means of weights 18 acting on the bellows on each side, to which they are attached. The bellows D are returnd by the weight 19. The flow of gas is controlled by means of a valve F on the stem of which is an arm 20, provided with a weight 21 and connected to a lever 22, pivoted at 24 and having a weight resting at 23 on top of the bellows D. The arrangement is such that when the bellows D are expanded with the mixture it will lift the lever 22 and, through its connections turn the valve F and shut off the gas, while the collapse of the bellows D will reverse the valve.

The proportions of the parts are such, preferably, as to mix the air and gas in equal volumes, as this has been found in my process to give good results; but I do not limit myself to these proportions either in the apparatus or process.

The pipe Q leads from the bellows D to the branches which carry the burners.

, The mixture of the air and gas is complete and intimate when it is delivered to the mantle burner without causing deposits upon the tip or injury to the mantle, and with this mixture so delivered the mantle-lamp can be burned uniformly and continuously with an exceedingly brilliant light and with no more difficulty than is experienced with ordinary illuminating gas.

The point at which the mixture of gas and air takes place is not material, provided that it be thoroughly mixed and delivered in the pipe before reaching the discharge-orifice.

What I claim as my invention is- The method herein described of mixing acetylene gas and air for heating purposes, the same consisting in continuously mixing with said gas, air at a pressure in excess of atmospheric pressure in approximately equal proportions to produce a solely calorific flame by utilizing the pressure of the gas between the generator and burner, which produces a mixture of necessarily a lower pressure than the pressure of the gas, and burning the mixture within a mantle of incandescing material, substantially as described.

' ALEXANDER KEITH.

Witnesses:

B. BOYD, M. MCLAREN.

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