US1038765A - Welding-burner. - Google Patents

Description

` H. H. LANNING.

WELDING BURNER.

APPLICATION FILED ooT,6, 1911.

Patented Sept. 17,1912.

@Trittin .fhtlldhl'll @Flllltllll Howlin-n H. LANNING, or TOPEKA, Kansas, Assrenon or ons-HALF To HENRY w. JACOBS, or morena, Kansas.

WELDING-BURNER.

weaves.

Specification of Letters Patent. PatQHt-Qd'gptg, 11?', 1912],

`Application filed October 6, 1911. Serial No. 653,180.

To El whom t may concern lie it known that I, HOWARD H. LANMNG, a citizen of the United States, and resident of Topeka, in the county of Shawnee and Stateof Kansas, have invented certain new and useful lmprovements in VVelding-Burir ers, of which the following is a description, reference being had to the accompanying drawing, which forms a part of my specification.

My'invention relates to a welding burner `uherein pure oxygen and some other suitable gas suehl as acetylene, hydrogen, natural or illuminating gas, is intended to be used to produce a blow pipe flame suitable for welding purposes.

The object of my invention is to produce a burner which will be light and durable and which can be manufactured and main tained at the leastlpossible cost.

A further object of my invention is to produce a composite burner, the component parts whereof will be readily accessible and at the same time easily removable for repairs or displacement without disturbing the relation of other parts. and without necessitating the entire dismantlement of the burner.

Another object of the invention is the production of a burner whose construction will permit the use of acetylene or other comlbustible gases under the low pressure at which such gases are usually supplied and atI which it is safest, most convenient and economical to generate them, as will be more fully 'understood from the following detailed description.

ln the drawing:*Figure 1 isla partial longitudinal sectional view and partial side elevation of my improved burner. Fig. 2 is a longitudinal sectional view of the burner head and mixing chamber end of the device. F ig. 3 is a cross sectional View taken on the line 3 3 of Fig. 2 looking in 'the direction of thearrows. Fig. 4 is a. detailed view in perspective, to more clearly illustrate the Yconstruction of the inner or oxygen nozzle.

Fig. 5 a1 detailed view in perspective to more clearly illustrate the construction of the main or outer nozzle.

ln the exemplification of my invention disclosed in the drawing, (E and 7 are .suit

able stopcocks which are intended lo be con- .nected to suitable conduits leading to differ# ent sources of proper gas supplies: that is, the cock (i is connected with a supply of v like oxygen, while cock 7 is connected with a supply of acetylene or other suitable gas. The stop cocks (l and 7 are preferably secured to or screwed into a breech block S which is provided with ducts or passages 9 and 10. The breech block 8 is removably held in place against one end of the handle portion 11 by the knurled sleeve 12, which .screws onto handle portion 1l. The handle 11 is provided with a chamber 13, which is adapted to receive suitable filtering material such as mineral wool, felt, asbestos, er the and one end of the chamber being preferably provided with wire netting of suitable mesh as at 14, whereby the4 filtering pack is held away from the outlet end of the chamber. The handle 11 is also provided with a separate passage or duet 15 -which communicates with the passage 9 -in the breech block, while the passage 10 in the breech block communicates with chamber 13. The opposite end of handle 11 is pro vided with a pipe 16 which is secured in an outlet opening or port of chamber 13, and also with a pipe or tube 17, which connects with the passage or duct 15 in the handle. The other end of pipe 1G is connected to a T-head 1S and communicates with a chamber 19, see Fig. 2.

The upper part of the T-head 18 is internally threaded to receive the externally threaded sleeve 20. The upper end'of sleeve 2O is reduced andinternally threaded as at 21, where it receives the upper, externally threaded end of the inner nozzle 22. ln or; der that sleeve 20 may be held in its adjusted position in the upper end of the T-head 18, l, provide a lock nut 23 which engages the external threads on sleeve 20 and screws down onto a suitable gasket or washer 24 whereby a tigl'it joint between sleeve 20 and the 'IT-head '1,8 is provided, which will prievent the leakage of gas around the threads. :l gasket or washer 29 is preferably inserted between the reduced portieri of sleeve 20 and an annular lflange 30 on theinner nozzle 22, so as to insure a tight` joint being made between nozzle Q2 and sleeve 20.

f he upper end of sleeve 20 has secured to it a tubular tip 25,v one end of which is provided with a flange 26 which bears against a. gasket E27. The tip 25 1s held in place by a cap nut 28 which screws onto sleeve 20. The tubular tip 25 receives the end of tube or `pipe 17, which is securely ywill be slightly removed from tip fastened therein, either' by being soldered or secured in any other suitable manner.

lThe lower end of the inner nozzle 22 is providedwith an annular flange 31 whereby the nozzle is maintained in a central position within T-head 18. This annular flange 31 is provided with a series of portsl cr slots 32, arranged about its periphery, so as to permit of communication between the upper and lower portions of chamber 19 in the T-hcad 18. The lower end of im-head 18 is slightly contracted and internally threaded so as to receive the threaded shank or end of an outer or main nozzle 34; aportion of the nozzle 34 being preferably made hexagonal in shape to permit of the use of a wrench whereby the screwing ofthe main nozzle into the T-head 18 is facilitated. The shanlr'or upper end of the main nozzle 34 is made to extend beyond its threaded port-ion so as to abut against the flange portion 31 of inner nozzle 22, and adjacent to its tip 35 without interfering with the slots or ports Thevshanlr'33 is provided with ports or perforations 3G arranged in-circumferen tial manner at a point below the upper end, so that when nozzle 34 is in place, the port-s 35, as clearly shown in Fig. 2. The main nozzle 34 is proridedwith a tapering bore or coni` cal chamber 37, provided with an elongated' orifice or mouth In ,the employment of my improved burner, the oxygen is allowed to pass through cock 6, when the latter is open, and flow through the passage 9 in breech block S, into the passage or duct 15 in handle l1, and thence through tube 17 and its connections intothe inner nozzle 22 and out through its tip 35 into bore or mixing chamber 37 in main nozzle 34, above perforations or ports 36. The acetylene, or other suitable gas, is

admitted through cock 7, by. which its flow may be controlled, into the chamber 13 of handle 11. [is previously stated, chamber 13 is provided with a suitable filter paci;v of mineral wool, felt, asbestos, or the like, so as to prevent impurities or solids being carried beyond chamber 13. The liltered acetylene, or other gas, passes outI of chamber 13 into pipe 16 and into the chamber 19 in T head 18; from chamber 19, the acetylene passes through the ports or slots 32 into the lower part of chamber 19 from whence it passes through ports 36 and into the mixing chamber 37 beneath the point where the oxygen enters said chamber. Here the acetylene diffuses with the oxygen, so that a mixture of oxygen and acetylene will be discharged through the orifice or mouth 38 of main nozzle 34, at which point combustion takes place.

By reason of the manner of vseeming the inner nozzle 22,; within the T-head 18, namely` through the medium of sleeve 20,

essary distance. The sleeve 20, together with the inner nozzle 22, will be held in its adjusted position by the lock nut 23.

The bore or mixing chamber 37 of main nozzle 34 is preferably made conical as previously stated, although it may be madeany suitable shape to adapt it to different requirernents; it is important, however, that the walls ofthe mixing chamber 37 be absolutely smooth, and that the orifice or mouth 33 thereof be perfectly round, as clearly shown in Fig. v2, otherwise, the flame is-very apt to flash or strike back through the orifice or mouth 38 and set. tire -to the mixed gases within chamber 37. This would soon result in the absolute destruction of the nozzle. As the. main nozzle isnot only subjected to ,intense heat but is -als'o subjected to more or less abuse whereby its mouth or orifice is apt to be distorted, it would be necessary under ordinary conditions to discardthe nozzle; but in order to extend the life'of the nozzle, I have made the mouth or orifice cylindrical for a short distance back, so that any distortion at. the mouth may be corrected by tiling off a suiiicient portion, without, however, altering or interfering with the shape and size of the mixing chamber 37. Should the main nozzle become defective, it is evident 'that a new one can readily be inserted in the T-head without necessitating the renewal of any of the other` parts lof the burner. By providing the main nozzle 34 with its extended end or shanli 33, which encirclesthe tip of inner nozzle 22, it is evident that a mixing chamber is produced by the close contact between the two members. This permits of the employment of an inner nozzle having a tip or discharge orifice of the desired size without requiring a different outer or main nozzle, so that either one of the nozzles may be"re placed without the necessity of changin the other. l

The dimensions of mixing chamber 3.7, the i size of the orifice in tip 35' and its position relative'to the ports 36, all depend upon the gas pressures used aswell as upon the diameter of the orifice or passage 38 at the mouth of the main nozzle; and the proper diameter of passageBS is determinedl by the class of welding that is desired to, be done; for instance, the welding of heavy pieces of metal requires a relatively Larger passage than that required for lighter work. With my improved construction, therefore, itjis apparent that a number of nozzles 34 pro- 130v vided with passages 38 of different sizes may be interchanged, thus adapting my improved burner to different requirements, and obviatingthe necessity of an entirely different burner. The same is true in connection with the inner or oxygen'nozzle 22, as it is evident from the construction shown and described that inner nozzles ot' various lengths beyond flange 3l may be employed, providedi\ith tips 35 having orifices of different sizes. By choosing, therefore, the proper combinations of inner or oxygen nozzles and outer or main nozzles, thel burner can be quickly adjusted for any class of welding, as well as other varying gas pressures within reasonable limits.

As previously described, t-he filter pack inclosed in chamber 13 is preferably made of some non-combustible substance, but of a nature that will permit of the passage-of y gas. The filter pack serves'the double purpose of filtering the gas so as to prevent particles of solid matter being carried by the gas to the burner-tip where itwouldl clog u'p the small orifices or affect the chemical or physical ropert-ies of the Haine, and also prevents ille propagation of any ame or explosion of the source of gas supply.

By having the different gas controllin means or cocks secured to the breech bloc or member 8, it is evident that the breech block can be readily removed for the purpose of cleaning or renewing the filter pack within handle 11. The construction of han`- dle 11 and breech block 8, together with the mannerof securing the two together, permits of ready access to chamber 13 without the necessity of disconnecting any pipes or tubes, 'it merely being necessary to close cocks 6 and 7 and thereby shut oif the HOW of the gases. Another advantage result-ing from the construction shown and the lmanner of connecting the-.handle and breech block, is that another form of breech block, for instance one having a third cock for an auxiliary jet of oxygen to be used for cutting purposes, can be easily and quickly applied in place of the one used for the usual or ordinary run of work in connection with which burners of this class are used.

I have shown and described what I believe to be the;- simplest and best construction of my invention, but the same may be altered in certain details as practice may dictate without, however, departing :from the spirit of my invention, and I do not wish tobe understood, therefore, aslirniting myself to the exact construction shown and described, but

lVhat l claim and wish to secure by Let" ters Patent, is:-

1. A burner of the class described, comprising a hollow member, a second. member arranged within the hollow member, the second member being provided with an an- 'nular iiange in proximity to the one end thereof adapted to engage the wall of the hollow member and maintain the second member substantially at the longitudinal center of the hollow member so as to provide a chamber intermediate of the walls of both members, said annular ange being provided with a series of openings whereby communication between portions of the chamber on opposite sides of the flange is established, means secured to the other or upper end of the second member, arranged to screw into the hollow member, whereby the second member is adjustably secured to the hollow member, means whereby the firstmentioned means is locked in the adjusted position and a gas tight connection maintained, said second member being provided with a tip at the lower end thereof, and an outer or main nozzle provided with a tapering passage extending longitudinally therethrough and having a reduced extended end or shank adapted to abut yagainst the end of the second member and incase the tip thereot, the extended end or shank being provided with one or more ports at a slight distance from the end thereof whereby communication between the chamber in the hollow member and the tapering passage in the main nozzle is established and said passage utilized as a mixing chamber, the outer or main nozzle being removably secured in the end of the hollow member.

27A burner of the class described, comprising a hollow outer member, a second member arranged within the hollow member, the second member being provided with a passage extending longitudinally therethrough and having an annular flange in proximity to each end thereof, whereby the position of said second member relative to the Walls of the hollow member is maintained and a chamber intermediate of the members provided, the flange adjacent the one end of the second member being provided witli a series of openings for the passage of gas therethrough, a sleeve portion arranged to` receive the other end of the second member and adapted to screw into the other end of the outer member whereby the second member is adjustably secured within the outer member, means whereby said sleeve portion is locked in its adjusted position and a gas tight connection maintained, and an outer or main nozzle provided with a reduced extended end or shank arranged to screw into the outer member and adapted to abut against the end of the second member, said shank being provided with one or more ports whereby communication between the chamber in the outer member and the nozzle interior is established.

3. In a burner of the class described, an outer member provided with an opening in its side for the admission of a gas, a nozzle removably secured et one end of said member and having a reduced end extending into said member and provided With a passage extending longitudinally therethrough, diminishing in size toward lie outer end of said nozzle, seid reduced end being provided with ports arranged at predetermined points, a second nozzle extending longitudinelly Within said member and provided withV a tip adapted io abut against the extended end of the rst mentioned nozzle whereby the gases flowing through seid second nozzle and through the outer member Wiil made to mingle in 'the passegeo lillev first mentioned nozzle, the upper ei'idor' said second nozzle being connected with a source of gas supply, and means whereby said secipeepee Copies of this paient may be obtained for five cents eeei, by eressiig lommssener of Eetents, Weehington, El E.

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