US866163A

US866163A - Burner for acetylene gas.

Info

Publication number: US866163A
Application number: US33911306A
Authority: US
Inventors: Henry E Shaffer
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-10-15
Filing date: 1906-10-15
Publication date: 1907-09-17
Anticipated expiration: 1924-09-17

Description

No. 866,163. PATENTBD SEPT. 17, 1907.

- H. E., SHAFFER.

` BURNER PoR AGBTYLENE GAS.

v AFPLIOATIQN FILED 001.15. 1906.

FIGLI.

I9 I I4 `l5 2O /4 5\ '6,

F|G.4. 2 y l Y 3 Il v WITNEssEs: Imag/2R: Y' fm/ 576-P f HENRY E. SHAFFER OF ROCHESTER, NEW YORK.

BURNER FOR .ACETYLENE GAS.

Specification of Letters Patent.

Patentedsept. 17'-, 1907.

Application sied october 15,1906. serial No. 339,113.

To all whom it may concern.:

Be it known that I, HENRY E. SHAFFER, acitizen of the United States, and a resident of Rochester, in the county oi Monroe and State oi New York, have invented certain new and useful Improvements in Burners for Acetylene Gas, of which the following is a specification.

This invention relates to burners for acetylene gas, and consists in the apparatus hereinafter described and claimed.

The object oi the invention is an improved burner in which a` larger amount oi air is led to the gas jet and is better mixed with the issuing gas than in burners heretofore constructed.

In the drawings:-Figure l is a top plan view of a burner embodying this invention; Fig. 2 is a vertical section on the line 2-2 of Fig. l; Fig. 3 is a like vertical section through a burner of slightly modified form; Fig. 4 is a top plan view of one of the arms of the burner ot Fig. 3.

All oi the devices herein shown are of the twin-burner variety, in whichtwo jets of mixed acetylene gas and air impinge to iorm a ilat frame. In the manufacture of these burners, a brass tube l, Fig. 3, is employed, in which a two branch tip is set, each branch adapted to produce a jet such as above mentioned. In Figs. l and 2 is shown a tip or burner body in which two branches or arms 2 and 3 are set at a suitable angle to each other, such as a right angle. In the upper suriace oi each branch a channel or slot (4 or 5) is cut transversely, so that the planes oi the two-channels intersect, and the channel is open at its ends for free induction of air to the point in the channel Where the gas jet passes through it. The bottom of these channels has an enlargement hereinafter described constituting an air channel. The upper edges of the channel overhang the said enlargement thereof. At the middle of the bottom of each slot, and in a plane parallel to the sides thereof, is bored the small gas duct (6 or 7 which communicates with the other gas duct (8 or 9) extending up the branch (2 or 3,) from the chamber l0 in the base of the'tip. The base Il is adapted to rit in the tube 1 above mentioned. The ducts 6 and 7 are bored so that their axes intersect.

As the acetylene gas passes from the chamber l0, and through the ducts 8 and 6, or 9 and 7, it issues into the bottom of the slot or air channel4 or 5, and, by the force of its ejection, draws in air through the ends ofthe

channel

4 or 5, so that said air comes from two directions to meet the jet of acetylene at the point oi its issuance; and on account ofthe large cross section of the

channel

4 or 5, with reference to the area of the duct 6 or 7, an ample quantity oi air for the complete combustion of the acetylene will be mixed with the acetylene, and this mixing will begin at the point oi issuance of the acetylene jet, and will continue to mix with said jet and throughout the flame which commences at the point where the two jets meet. The air has free access laterally to the jet from its emergence from the duct 6, 7, to the emergence oi the mixed air and gas from the burner. It will be noted that the acetylene duct G or 7, or 16, in Figs. 2 and 3, is of small diameter relatively to the width of the channel through which it emerges, and that said duct enters the open channel above it at the middle point oi the bottom of said channel, and discharges a jet of gas directly toward a point in the open top of the channel and in a line midway between said opposite sides. In other words, the jet issuing from the acetylene duct is not directed towards either side of the channel, but issues freely from the open top of the channel. It is found that this large supply oi air directed to the jet at the point of issuance and throughout the path of the jet, and through a slot of such size that the jet does not light back to the mouth oi the duct 6 or 7`, produces an efficient flame of high intensity and without the deposit of carbon upon the burner around the orifice from which the jet of mixed air and gas issues or at the discharge point of the small gas duct.

In Fig. 2 is shown an enlargement of the bottom of the channel by cutting a transverse slot l2 or 13, thereby producing an inverted T-shaped slot. ri`his constitutes an enlargement of the bottom of the transverse air slot, so as to increase the amount o air which is led to the acetylene jet at or near its point of issuance from the duct 6 or '7. This form gives even a greater supply oi air for the combustion oi the acetylene, and by reason of the slight constriction in the outer portion of the slot, there is a greater mixture of the acetylene and air before it emerges from the burner. The oritice where the air and acetylene issue from the burner must, as above stated, be oi such size as to prevent a lighting back. l

In Figs. 3 and 4 is shown another iorm of burner embodying the same invention, in which the air chamber has an enlargement at the bottom and the enlargement has sides converging to the position oi the gas jet in ci rcular curves. In this case there is a transverse slot l4` or l5 in the burner, and beneath it from each side of the burner arm is a circular slot shown by the dotted lines in Fig. 4. The two circular slots intersect ina plane which passes through the acetylene duct 1G, as shown in Fig. 4', and in the form shown the slots or enlargements of the channel have parallel top and bottom surfaces. This produces a great efliciency, but the exact accuracy of construction just described is not absolutely essential. In thisform of burner, the outer end of the lower portion of the air channel is larger than the inner end thereof, so that the air that is drawn in by the jet of acetylene gas enters more freely and is condensed and concentrated on said jet, and thus there is caused a more forcible and more thorough mixing of the acetylene and air close to the point oi issuance oi' the acetylene, and as the jety passes out through the ilo more constricted portion oi the

channel

14 or 15. By the circular converging sides the air is directed later'- ally against all parts oi the sin'face ol tlre issuing jet of acetylene.

The enlargement constituting the bottom or' the channel, as shown in Figs. 2 and 4, causes an overhanging et the edges oi' the channel over the enlargement. The said enlargement constitutes an air conduit lor leading air to the jet oi acetylene gas and also under and along the said overlranging edges ior keeping the latter cool. The said overhanging edges are thin, and resh air is constantly moving to all parts O such edges by reason el the suction produced by the acetylene jet, and these overhanging edges are kept cool by the air above, underneath and on the opposite faces ol each, in a manner that is impossible without such overlranging construction. It is well known among those versed in this art that unless the burner is kept cool at the point where the acetylene jet emerges from it, there will be an accumulation oi a wax-like black material that will finally clog the orifice and interlere with the production oi the flame; but ii the edges oi the oril'ice are kept properly cool, this accumulation will not take place. This invention is particularly adapted to accomplish this result, and the orm oi device shown in Fi gs. 3 and 4, in which the sides ol the enlargement underneath the said overhanging edges is such as to induce the maximum induction oi cool air to each point ol the slot or channel through which the jet issues; aird in this forni oi the invention, lreslr air' can pass directly to the central portions ol the channel without being iirst heated by contact with outer' portions ol the saine channel, because the sides oi tlre channel converge, and air entering on these converging lines can pass directly to diflerent portions oi the channel; and at the same time the lragile overlranging portions oi' the slot are supported at their centers by the intersecting sides oi the enlargement as shown by the dotted lines in Fig. 4.

Inthe forms oi the burner shown no drilling is necessary except lor the acetylene ducts. The air passages and the passages where the mixed air and gas emerges, need not be drilled. 1n each oi these burners the air inlet channel has portions extending laterally rom the portion of the gas jet and in all the forms the outer ends oi the said portions are at least as large at the open ends as at the acetylene jet. 1n one ol the forms the outer ends oi the channel are larger than at the jet.

The ample air supply to the gas jet and the large space within which the air mixes with the gas, and the lact that the jet is not choked or restricted in its path7 cause a very complete combustion oi the gas. The large air supply and the mede oi bringing the air' to the gas keeps this burner cooler than others.

What I claim is 1. ln an acetylene burner, a burner body having two arms for carising a jet issuing from one arm to impinge upon a jet issuing from the other arm; a channel in the ripper' face of each arm having an enlargement constituting the bottom thereof, whereby the ripper' edges ot' the channel overhang the said enlargement, the said channel and enlargement having a bottom and opposite sides and being open at the top and at the ends; and an acetylene duct, o1 a diameter' less than the width of the channel, entering the said bottom midway between the sides and discharging a jet ol gas directly toward a point in the top of the point in the top of the channel and in channel and in a line midway between said opposite sides.

2. ln an acetylene bur'ner, a brii'rrer body having two arms for causing a jet issuing from one arm to impinge upon a jet issuing from the other arm; a transverse channel in the ripper tace ot' each arm and entirely across the same, and having an enlargement constituting the bottom thereof, whereby the ripper edges of the channel overhang the said enlargement, the said channel and enlargement havingl a bottom and opposite sides and being open at the top and also at the ends in opposite sides of the arm; and an acetylene diret, of a diameter less than the width of the channel, entering the said bottom midway between the sides and discharging a jet of gas directly toward a a line midway between saidropposite sides.

In an acetylene burner, a brii'ner' body having two arms for causing a jet issuing from one arm to impinge upon a jet issuing from the other arm; a channel in the ripper' face of each arm having an enlargement constituting the bottom thereof open at the ends and having sides converging inwardly to the position of the acetylene jet, whereby the upper edges of the channel overhang the said enlargement, the said channel and enlargement having a bottom and opposite sides and being operi at the top and at the ends; and an acetylene duct, et a' diameter less tlrair the width ot' the channel, entering the said bottom midway between, and at the intersection of, the sides arid discharging a jet of gas directly towai'd a point in the top or the channel and in a line irridway between said opposite sides.

y-l. ln an acetylene burner, a burner body having two arnrs for causing a jet issuing from one ar'm to impinge upon a jet issuing from the other arm; a channel in the ripper' face of each arm having an enlargement constituting the bottom thereof open at the ends and having sides converging inwardly in intersecting circular crirves to the position of the acetylene jet, whereby the upper' edges of the channel overhang the said enlargement, the said channel and enlargement having a bottom and opposite sides and being open at the top and at the ends; and an acetylene drict, of a diameter less than the width of the channel, entering the said bottom midway between, and at the intersection of, the sides and discharging a jet of gas directly toward a point in the' top of the channel and in a line nridway between said opposite sides.

ln an acetylene burner', a burner body having two arms for causing a jet issuing from one arm to mpinge upon a jet issrrirrg from the other' arm; a channel in each arm having an enlargement connected with the bottom ot said channel and being operi at its ends in opposite sides ot' the arm and having sides converging inwardly to the position of the acetylene jet', and an acetylene duct, of a diameter' less than the width of the channel,l entering the said bottom and discharging a jet ot' gas in a line extending directly from the duct to a point in the top of the channel.

(3. ln an acetylene brirner, a burner body having two arms for causing a jet issuing from one arm to impinge riporr a jet issuing from the other arm; a channel in each ar'm having an enlargement connected with the bottom of said channel and being open at its ends in opposite sides of the arm and having sides converging inwardly in inter'- secting circular curves to the position of the acetylene jet; and an acetylene drict, ot' a diameter less than the width of the channel, entering the said bottom and discharging a jet of gas in a line extending directly from the duct to a point in the top ot' the channel.

7. Iii an acetylene burner, a burner body having two ar'nrs for causing a jet issuing from one arm to impinge upon a jet issuing from the other' arm; a channel in the ripper face of each arm having an enlargement constituting the bottoni ther'eot and having parallel bottom and top surfaces and being open at the outer ends at the sides of each arm and having sides converging inwardly to the position of the acetylene jet; and an acetylene duct, of a diameter' less than the width of the channel, entering the said bottom at the point of intersection of the converging sides and midway between the sides and discharging a jet of gas in a line extending directly from the duct to a point in the top of the channel.

8. In an acetylene burner, a burner body having two channel, entering the said bottom at the point of inter- 1() arms for causing a jet issuing from one arm to impinge section of the converging sides and midway between the upon a jet issuing from'the other arni; a channel in the sides und discharging a jet of gas in a line extending upper face of each arm having an enlargement constituting directly from the duct to a point in the top of the channel. the bottom thereof and having parallel bottom and top sur- 1 faces and being open at the outer ends at the sides of each HENRY E' SHABDER arm and having sides converging inwardly in intersecting Witnesses: circular curves to the position of the acetylene jet; and l. GUnNEn,

an acetylene duct, of a diameter less than the width of the IIL L. OsGooD.