US880313A - Burner for explosive-engines. - Google Patents

Description

No. 880,313. v PATENTED FEB. 25, 1908. J. S. LANG.

BURNER FOR EXPLOSIVE ENGINES.

APPLICATION FILED JUNE 28, 1905.

\AA JEEEEE or arms PATENT ortion.

, JAMES sfLA 'e, or BOSTON, MAssacnUsEr'rs. i i

To all whom it may concern:

Be it known that 1, JAMES S. LANG, of

Boston in the county of Suffolk and-State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Burners for Explosion-Engines, of which the following is a full clear, and exact description, reference being had to the accompanying drawings,,forming a part of this specification, in explaining 'l-tS nature.

The invention relates to an improvement in burners made to be used in connection with the combustion chambers of explosion engines for heating igniters or igniting surfaces. 7

The especial adaptability of the burner is in connection with an igniter or i niting surface like that shown and descrl ed in my Letters Patent of the United States No. 727,158, granted May 5, 1903, in which the igniter is located in the exhaust passage of the combustion chamber of the engine and ke t hot by the repeated discharges of the exhaust expelled through this passage. Inasmuch as the igniter can be kept hot'by the exhaust only after the engine has been started, a primary igniter is necessary to first ignite the compressed charge, as described in said Letters Patent. As an im ovement upon this, however, I have provi ed by the invention of my 00- ending application, Serial No. 257,037, fi led A ril 24, 1905, means for extraneously intro ucing into the combustion chamber, by its outlet passage, before the engine is started, a heating fluid or flame for raising the igniter or igniting surface to a sufliciently high temperature to I induce ignition,-

My present invention consists accordin ly in an lmproved means or t e of burner y which this may be accomphs ed, the special object of my invention being'not only to rovide as simple a means as possible, in w 'ch as will hereinafter be explained a burner and valve are practically combined, but also to provide a burner capable of developing a strong and intensely hot flame and especiall ada ted to the purpose to which it is applie y invention can best be seen and understood byreference to the drawings, inwhich Figure 1 shows in cross vertical section my improved burner applied to an engine.v Fig. 2 s owe a vertical section of the burner in enlar ed detail. Fig. 3 shows in elevation a deta' or art thereof to which special referonce will ereinafterbe made.

. Specification of Letters Patent. Application filed Tune 28. 1905- Sorlal No. 267.405.

. Patented Feb. 25, 1908.

In the dras:-A represents a portion er of I of the cylind a gas explosion'engine, in

which is formed a combustion chamber a containing a piston B. The gas is fed into.

With reference now to the improved means or burner D for primarily heating the igniter, or 1 n other words for heating it before the engine-1s started. This is in the nature of a burner and combined cock. "On the' outside I it comprises a hollow valve casing d of-a cone-shapedformation. On its large end the casing has an annular, internally threaded,

flange-forming ortion d by which it screws onto the end 0 a pipe or coupling (2 This coupling screws into a hole or opemng formed in t e wall of the combustion chamber at a oint about adjacent to the mouth of its outet or exhaust passage, b which means a closed connecting passage 3 is made between the inside chamber (1 of the valve casing and the interior of the combustion chamber at the oint mentioned.

ithin the chamber of the valve casin d is arranged a cone-shaped valve (i T 's valve has on its end a stem (1 whichprojects up through the open apex of the valve casing. Over this projecting stem and rest-- ingupon the end of. the valve casing is placed a washer (1''. Above the washer is fitted a handle (i over which on the end of theprojecting' stem screws a locking 'nut (1 By tightening the nut d the valve is drawn to fit tight within its valve casing and the handle (1 is also secured to the-end of the valve, by which it may be turned within its casing. Within the valve d is a chamber (1 which serves as a mixing. chamber for compressed air and fuel admittedinto it through nection it is be noted that the endlpof the pipeis about on a line'withthe outlet to the a r pass e (1", so that the stream of as it enters t e end of the chamber from the air inlet passagewill flow across the out-1 let to the I fuel supply ,pipe Slidfitl'lkihg the fuel will'cqrnminute it or reduce it to a s ray besides -mixing therewith. 'These fue an turning the valve to a changed position these airsupply passages are we ted to register with one another onl when t e valve s open, or in other words, w en it is turned to a certain position with respect to its casing. On

' passages will be entirely cut off.

.-into the combustion chain asbefore described' This outlet practically.

. The end of they ve into-the-gassage (2' leading forms the mouth of the burner or burner proper, for from it'when the combustible material is ignited the flame issues. Inasmuch as the air inlet passage enters the mixing chamber at the end thereof opposite its outlet, the compressed air will not only reduce and mingle with the fuel, but'will also act to blow or force the combustible mixture from the mixing'chamber through the outlet thereof into the passage d.

For contracting the outlet to the mixing chamber or mouth of the burner, in order that the combustible :mixture may be emitted therefrom with increasedfor'ce and alsoina diverging, annular stream, there is placed in said. outlet a diffusing plu d;

his plu is made conical in form an ofa size to a out fill the outlet-or so as to leave an annularorifice between it and that portion d of the internal wall of the valve forming theoutlet. Through such an orifice of course, the combustible mixture issuein an annular stream. It is also to be I noted that the internal wall (1 flares outwardly. The plug (2 is also made corre-' spondingly diverging in form so that the mchnation of the annular orifice between these arts will be such as to direct the combustibl fluid issues from the orifice it becomes i-gnited), against the internal wall of the pipe or couphng forming the assage (i beyond the mouth of theburner, r a purpose which will hereinafter be explained. The diffusing plug (1 is held in la which it is'secureril This nut screws u inside the interior chambered portion 0 the valve. By adi'usting the nut the location of the diffusing p ug may be changed relativel to the wall 6 by which wall together wit the plug the orifice is made,"so regulating the size of the orifice and. consequently the amount of fluid or passing throu h it.

For admitting atmospheric into the passage (1 beyond the mouth of the burner, there are formed through the wall of the som 1 close chamber outlets through the the passages d", the engine,

e fuel or flame (for as the combustible me by a wing nut d" to combustible m xture casing airpassages" a", ahead by .8;

the annular portion'd sages-d" thro h rfii projects forward from and the valve,-whif around the end portion of the body thereof, forming the mouth of the burner, as before explained. These passages d", d"-,are so located asto be opened when the fuel and airjsupply pass es through the valve arid cas n areopen and c'losedwhen they are In other words, all the'fuel and' air suppl passages in front of or behind the mout ously-uponturning the valve in' the valve casing. Moreover, with the parts thus ar-' ranged, the atmospheric air'enteringthrough ,',.willbedrawninthro h these esto with the-combustib e of the burner areclosed simultane-Q mixture or ame streamingl from the mouth I I of the burner so mate'a strength and intensity. The reason for this is that a artial vacuum is formed withinthe annular a'me streaming from the mouth of.

the burner, on which account the air ente throu h these assages d", (2" will tend to pass t ou h t e flame 'andfill the vacuum and so wil be drawn into le-with and feed theflame. The air is furt er drawn in to mixwith the flame b reason of its contact with the inner an ace of the ipe or coupling (1 which acts to draw or p said pipe or coupling; thus not onlyis a large amount of air su plied to feedthe flame at the mouth of t e burner, :but the adaptation of the parts is 'alsosuchthat the and through the'annular orifice forming the mouth of'the burner into the passage d'..

Atmos hericthere mix with the com bustib e mixture, which will. flowthrou'gh the assage (1' into the combustion chamber oft eengine and outthrough its outlet or exhaust passage containingD the igniter, as before explained. This com ustible mixture is then ignited atsome point or opening along the outlet or exhaust ass e, the flame starting from the mouth 0 the urner. After the igniterhas been'heated to a sufficiently high temperature to induce'the ignition of t e gaseous charge to be compressed in the comustion chamber of the engine, the valve is then turned to a closed ositionshutting off all the fluid and airv supp y openings thro' h for operation.

m the- 'air as it wears against the inner surface of the valve and casing, and the engine is r I y' y increasing its .air will be drawn or forced into the-flame andair 'casin 'mout and air passages extendin throu h The valvular structure is very simple; it can easily be fixed to the wall of the engine and can be easily operated. The structure is also very strong and especially adapted to stand the shock of the explosion in the combustion chamber of the engine.

In order that there may be no danger from the i nition of ex losive gases in the atmosp ere surroun 'n the burner, I prefer to provide it with a e wire gauze E after the manner of a safety lamp.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. A burner of the character specified having a casing, a valve inside said casing, gas and air. supply passa es extending through said caslng and va ve to form a combustible mixture inside the valve Whereby a flame may issue from a portion thereof forming the mouth of the burner, and air supply passages admitting air to the flame beyond said mouth of the burner. l

2. A burner of the character s ecified having a casing, a valve inside sai ca'sing having an o ening therein forming the mouth of the urner, said-valve having also a portion extending forward from said mouth and lying snugly adjacent to the wall of the casing, fuel and air su ply passages extendin through the war of said and va ve to connect with said said casing and said extended valve beyond said mouth.

3. A burner of the character specified comprising an external valve casing, a valve contained within said casing, a mixlng chamber within said valve havin an outlet at the end of the valve forming tie mouth of the burner and from which the flame issues, fuel portion of e and air assages extending through said valve an casing to said mixing chamber,

and air passages for admitting air to the flame through said valve and casing at a oint about opposite the mouth of the urner.

4. A burner of the character specified hav ing an external casing, a valve contained therein, a mixing chamber inside said valve and connecting with the end of said valve forming the mouth of the burner, and fuel and air supply passages extending through the valve and casing to connect with said mixing chamber the air supply passage being arranged to direct a stream ofair across the end of said fuel supply passage and towards said mouth of the burner.

5. A burner of the character specified hav ing an external casing, a valve contained within said casing and with an outlet at one end thereof formin the mouth of the burner or point from whic the flame issues, an entry extending through said casing and valve to connect with the valve outlet or mouth of the burner for admitting and directin thereto combustible matter, means arran e in said outlet and forming an annular ori ce throu h which the products of combustion are a apted to be discharged and directed to issue against the interior wall of a passage beyond said mouth of the burner, said pas-' sage beyond the mouth of the burner, and air passages through said valve and cas' admitting air to the flame between sai mouth and the point where the flame contacts with the interior wall of the passage beyond said mouth.

. I JAMES S. LANG.

Witnesses:

JOHN E. R. HAYEs, MARTIN V; FOLEY;

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