US969487A - Blowpipe. - Google Patents

Description

' R. W. MAGNA & L. G. W. CARPENTER.

' BLOWPIPE.

APPLICATION FILED we; 17, 1909.

Wm M A WITNESS/5S:-

X. g E I l d A TTORNEYJ. v

R. W. MAGNA & L. G. W. CARPENTER.

BLOWPIPE.

APPLICATION FILED we. 17, 1909.

969,487; Patented Sept. 6, 19 10.

2 SHEETS-BEBE! 2.

VII/m I I'l WITNESSES I INVENTORS;

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RUSSELL W. MAGNA, OF HOE FORE, MASSACHUSETTS. AND LOUIS G. W. GARI?IFJ ICLIZIR,

tilt" PHILADELPHIA, PENNSYLVANIA.

BLOW'PIPE.

scenes. H

Application tiled. Augustus, 19%, Serial Nb. 513,231.

To all whom it may concem:

Be it known that we, RUSSELL W. MAGNA, residing at Holyoke, in the county of Hampden and State of Massachusetts, and Louis G. WV. CARPENTER, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, both citizens of the United States of America, have jointly ins vented a new and useful Blowpipe, of which the following is a specification.

Our invention relates to improvements in burners of the blow-pipe variety which are adapted to mix and burn a combustible gas and a gas that supports combustion, oxygen and acetylene gases being those usually employed; and said invention consists of a peculiarly constructed mixer and burner mounted on two tubular members one Withthe other, together with a valve for the instantaneous control of the oxygen, and such auxiliary and subsidiary parts and members as may be needed-to render the device complete, including a so-called cutting attachment which is provided with a valve,

all as hereinafter set forth.

The objects of our invention are, first, to provide a simple and com act oily-acetylene blow-pipe in which and with which combusduce a flame of tion of said gases is obtained at a temperature suliiciently high for all practical pur poses, that is to say, these gases when burned with this burner or blow-pipe prosuch intense heating capacity orgreut fervency that the device canbe employed in the same-Way and'to equal if not greater. advantageas are other devices of thistttype, for soldering, brazing, welding,

cutting, and otherwise operating and acting upon various kinds of metal; second, to produce such a blow-pipe which possesses a wide range of capacity, whereby the same is enabled to meet the demands made upon it in the diversified uses to which it may be put in the various arts in which it may be emiloved" third, to )roducc a blow-n; 1e

that will operate successfully with all re.- quired sizes of flames, so that it is not neces- ,sary to-provide a number of blowpipes for diiierent kinds of work; fourth. to aii'ord means to take care of flash-backs when-- .which embodies ever they occur in this blow-pipe so thatthey are rendered entirely harmless; fifth,

to furnish means for regulating and controlling the gases which pass through said blow-pipe so as to make the latter prac-i ticable and efiicient in all particulars, and, sixth, to provide a blowpipe that can easily be kept 1n order. l/Ve attain these objects ing drznvings, in which-- -Figure 1 is a central longitudinal section through the major portion of a blow-pipe a practical form ofour invention; Fig. 2, an enlarged section taken on lines 2-2, looking in the direction of the arrow in Fig. 1; Fig. 3, a partial section and elevation of the lower portion of the device, as shown in the first View, enlarged; Fig. at, a side elevation of said blow-pipe and the cutting attachment; Fig. .5, asimila'r elevation Without said attachment; Fig. 6, an enlarged top plan of the cutting-attach- Speciflcatidmbi Etters Patent. Patented Sept. 6, 1910.

by the means illustrated in the accompanymentnozzle; Fig. 7, an enlarged longitudinal section through such nozzle, the elbow being omitted, and, Fig. 8, an enlarged. s tion of the cutting-attachment valve-casing, with the valve in place.

Similar figures refer to throughout the several views.

Starting with parallel twin conduits 1 and 3, the formerfor acetylene and the latter for oxygen, which are in practice connected by suitable pipes (not shown) with adequate sources of gas supply, and which similar parts are common to other types of oxyacety- There is also a tube 11 which practicable to keep the device clean and in' proper repair.

The valve-casing 6 consists partly of a screw-plug 12, and in the casing thus formed is a chamber 13 from which a passage 14' leads into open connection with the upper end of the conduit 3. and a second passage- 15 leads into open connection with the lower end of the tube 11, with a valve-seat 16 between such passages. A double-faced valve 17 in the chamber 13 is adapted to close either the valve-seat 16. or a valve-seat 18 in spring 21 until said valve comes to rest on i duit .3 is completely shut off, none being 1 ered by.wire-gauze-2 said chamber on the opposite side of the passage 15 from said seat 16. The valve 17 has a stem 19'slidiiigly mounted in the valve-casing 6 and provided on its outer end with a knob or button 20'for convenience in operating .said,,,stem and valve; A spring 21, in the chambeij. 13 between thejinner'face of the valve .-17 add. the opposite end of said chamber, normally retains said valve in contact with the seat 18. Practically the only object of the valve-seat 18 and the coacting or associated part of the valve 17 is to afford a tight joint around the valve-stem 19, when said valve is normallydisposed or open, and thus avoid a stufiing-box or other packing for said stem. p

VVhen the valve-stem l9'with its valve is forced inward against the resiliency of the the valvevseat 16, the oxygen from the conable to pass from that part of the' chamber 13 into which the passage 1% opens into that part of said chamber from which the .passage 15 leads, but as soon as said valve-stem is released said spring opens said valve and so clears the way for the free fiowof the gas. w

,The lower terminal of the tube 11 extends through the union 7 into an opening or rece'ss made in the upper end of'the valve-casing 6 to receive it, and a tight joint 'between said tube at this point and said union and valve-casing is obtained by means of packing 22. The upper terminal of the tubell extends into and opens into a central chamber. 23 in the headlO.

a passage .25v leads from,"the vicinity' of the upper end of the conduit 1, with which said passage. is in. openconnection, to said chamber into which it. opens at the top. The chamber 24 communicates with the interior of the casing 8 throng an opening 26"cov-,

stance, the -tube 11 passes through the In the present in-- chamber 24 as well as other 'parts of the union, 7. Within the casing 8 is a loose filling 28 of asbestos or other material which is capable of preventing or rather of nullifying the effects of back firing so that no harm is done thereby. By furnishing a comparatively large area of filled space intermediate of the'gas-inlet conduits and the burner proper, room is aiiorded for the expansion of the gases when there is a-flash-back and ample provision made for completely extin- .guishing the flame and preventing fire from getting into the gas passages below the easing 8. The wire-gauze 27 prevents thelfilling 28 from getting into the chamber 24 and so clogging tliepassage 25, and .a perfoto the under side thereof'and situated the top of the casing 8 performs a similar service for the tube 9; these foraminous'menibers together with said filling. also strain the acetylene gas and remove all *impurities from it. p

The head 10 may be constructed'in any suitable manner, there being-in this case,

in addition 'to the head proper, an extension 31 at the front-end and'two plugs-:32 at the sides. As just intimated, however, the method of constructing'the he'ad: is' not important 'so far as our invention isconcerned, providedsaid head be 'fadequate'fer our purpose. Within theheadxis thechamber 23," which consistsv of a straight-passage having a downwardlyextending branch into which the tube 11 opens, two chambers 33 at the sides, into which the tube 9 opens through Vertical Passages and a mixin chamber 35 into which said chambers +33 open through passages 36,..the majorj'portion of said chamber 35. being in .theextension 31. The head and its parts, with the exception of the depending-.-portioninto which the tubes 9 and'11 are'screwed, are preferably arranged obliquelyz substantially :'a"s,;,shown.v Either an ordinary nozzle 37 or a cutting nozzle 45 is screwed into the front is a passage 46' constructed at the'outer end end ofthe extension 31',*in each of which zles having diiferent sized orifices at their\ tips" are employed for difieriit kinds 'of .work which require flames of difierent sizes. Aninjector, nozzle 38', having a;v'alve-seat 39 for a needle-valve 40,-is screwed into the A chamber 24 is provided'in'the upper part ofthe union 7, within the casing 9, and

front end of the chambe'r' 23.. The needlevalve 40 is in threaded enga emenLWith the'sides ofthe chamber 23-bac of-the nozzle 38, a tight joint between-the head 10 and said needle-valve bein means 'of' a cap 4]. and ac 42. The needle-yalve 40 is operate by. a nob 43 on the outer end of the same in the usual man-- ner. The passage through the nozzle' 38 opens through the valve-seat 39 into an formed by 80 I rated disk 29 having wire-gauze 30 secured :54, Figs. 1 and 56,;Eig. -7, which is 10115.;fl01ll said ends of the tubes 47 and 48, and is provided 60-" place 1 annular-recess 44 in the front end of said nozzle-.-

\ 'lhe cutting attachment, which is used when the blow-pipe is employed for cutting 5; purposes. comprises, 1n addition to the nozzle 45, pipes47 and 48, a valve-casing 49 and valve '50, two elbows 51, and twocoupling nuts 52. The union ,7 is in'ovided on one side. with a nipple 53 which opens at 3, into the oxygen passage leis-said union, for' the lower elbow 51, and the-11oz e 45 is provided with a nipple tor-jthe upper/elbowfil. There is a passage parallel with the pasageyttl .in the nozzle 45. The passage 56 opens at its inner ,end into the nipple 55,

and atfits outerend through the tip of the nozzle 45 like the passage 46in saidnozzle. Adjacent ends of valve-casing 49. The

casing (i: ,It consists in part of a screw-plug 57,; has a chamber 58 therein and. two passages-j 59- ind 60 leading in oppos te d1recchamber to the adpzcent with n; valve-seat :61 between the inner ends ofiisuch passages for the valve 50. The valve 50;,hasajsten1 62 slidingly mounted in the ,vaflve'-'casing 49 and provided on its outer enduvithflaknob or button 63. The valve 50' -heldenonnally on its seat 61 by a spring 64-.

64," and the; valve. 50 thus removed from t e valveseatfil, the oxygen from the union 7 base clear passage to the passage 56, in the nozzle sff, by way of the tnbe47, passage 59, 40. chamber and shuts off the How of oxygen to said pas;

sage:5(l,since none can now pass from that 45 .pa rtpf said chamber into which thepassage filli opens into that part of said chamber frompwlnclrthe passage (30 leads. 1 See Fig.

8. ,rlhe'opening and closing of the'valve 50- doesnot appreciably ail'ect the flow of oxy- 50.51011 through the tube 11.

The (zoupling-nutsfiQ aflord ready means forconnecting the tubes 47 and ,48, with the rvalvecasiug 49, to and disconnecting themifrom the un on 7 and the nozzle 45,

55*sand -rthe latter can be as readil 'remo'ved from the extension 31 and attached thereto as'c n the nozzle 37. A screw-cap (i5 is used'g-toyclosethe outer end of the nipple 53 who the. cuttingattachment is not in In practice, assuming: that the cutting-attachiiieut. is not needed and has been discom nccted, the proper sized nozzle 37 is selected and attached to the extension 31, the needlethe- tubes 47 and 48 are {Whenthe valve-stem 62 is forced inward a ingagainst the resiliency of the sprin '16 and theoxygen thus cut oli'.

sprlu 21 and the How of valve is adjusted to regulate the oxygen and permit only the right amount of this gas to flow into. the mixing-chamber 35, and the valves L and 5 are opened. The acetylene gas now flows from the conduit .1, through the passage 25', chamber 24, opening 26, easing 8, tube 9, passages 34, chambers 33. and passages 36 into the mixingmhmnber 35; and the oxygen flows-from the con duit 3, through the passage 14, chamber 13, passage 15, tube 11. chamber 23, and injector nozzle 38 into said mixing-elminber. From the mixing-chamber the mixture passes out through the nozzle 37 and being ignited at the tip of said nozzle asit issues therefrom burns with great fervency and impinging force. The b its flame in the usual manner.

are, of course, under pressure.

When the blow-pipe is to be used for outting'purnoses, the attachment bereinlmt'ore described is connected to the rest of the device in the manner explained, the nozzle beingsubstituted for the nozzle 37, and the additional jet of oxygen gas obtained forthe flame produced from the mixture of the two gases which escape through the passage :(l,

- when the valve is opened, such jet escap- 111,1, through'the passage 56. The gases sup piled by this double nozzle in this way are exceedingly eflective, when in a state of co nbusti'on, for cutting metal of any reasonable thickness in a most ethcient manner. The valve 5O insures perfect control and automatically shuts oil? the auxiliary oxygen supply. Usually, for the sake of convenience. we prefer to disconnect the cutting attaeh-' ment, when the device is not to be used for cutting "purposes."

In the event that a flash-back occurs the valve]? is nnmedlal'ely pressed onto the seat When the bacl re has exhausted itselt in the casing 8, fllve 17 is released and opened by the oxygen permitted to cor i-nue.

At the completion of the work tlic valves 4 and 5 are closed, combustion ceases, and the device is laid aside until required again.

By employing a needle-valve iu-our construction the necessity of providing a number of injector nozzles is avoided. The mixiug'ot the gases in the chamber 3.) takes place in much the same "way as-in similar devices; although the of the gases is more. thorough and the combination more efficient owing to the presence of the recess 44- and the general construction of the head and its equipment;

It quite obvious that various changes in' shape, size, and construction of some or all of the parts of the device herein illustrated and described may be made without depart ing from the nature of our invention.

low pipe is now usedto apply. The gasesintermiugling to y a through the latter with' the conduitupou What We claim as our invention, and de sire to secure by Letters Patent, is'-' I V 1'. A blow-pipecomprisin fa chambered head, two gas. conduits provided with valves, members arranged to form passageways for" gas, one of such passageways being within the other for, a greater portion of itslength and both of such passageways opening at! one end into said head and at the otherend' into said conduits respectively, a normally-. open emergency valve arranged in'one of the passageways between the valve in ,th'conduit with which this particularpassageway is connected and the head, and a 'valvefarranged in the headto control the gas from the-inner passageway. 7 h r v U 2. A blowpipe comprising 'suitabl fgas'" conduits, consisting in part of awake-casing having ofiset passages and'an intermediate] valve-seat therein, tubular members connccted with one of said conduits and 'formf; in" a passageway for" the 'gastherenom,a

. tubular member Within such passageway .andconnected with the other'of'sald con-- tubular members, and a valve inthe head'it'o regulate th 0w of gas from, said inner tii-"z bular member. "'f 1 3. A blow-pipe comprising a chambered' head, two gas conduits, members arranged to form a passageway for gas which'passage way opens at one end into said head and at the other end into one of said conduits,"a loose filling in a portion of such passageway to form a flash-back compartmenhfand'a' tube within said passageway which tube also opeps at one end into said head but at the opposite end into the other of said conduits.

4. The combination, in a blow-pipe, of two gas conduits provided'with va1ves,"a valvecasing mounted on one of suclrcoriduits, union mounted on said valve casin gand the, other of said "conduits, tubular meinbers'f mounted on said union and connecting which the union is directly mounted, a tube,

in said tubular members and connectingth'roughthe valve casing 'Wi thithe conduit upon which "said casing moiinted, a valve in thecasing n lapted to "close chap sage; way from said tube to thei'conduiflbeloiv,

I means to retainsaid valve n'oi'r'ha'lly' open so as to leave si1cl1"passage\vay"ffeyand'a' chambered head mountetbon said tubular members-' c 5. A blow-pipe comprising a'chainbered" head, two gas conduits, members arranged to form a passageway for gas which passageway opens at one end into said head and at the otherv end into one of-said conduits,

one off said tubular members constituting 'a casing and having a loose filling therein with 'forami'nous' members at the ends to form a flash back compartment and to serve 'as a strainer for the gas,which passes through the same, and a tube ,wi thin said end into said head'but at the opposite end into theother ofsaidconduits. "'6, A blow-pipe comprising a chambered to forma passageway for gas which assages y opens at one end into said head and at "the other end'i'nto one of said conduits, a tube: within such passageway which tube also opens at ,oneendinto said head but at the opposite end 'into the other of said conhaving a passage which opens at its'inner head, and outside members arranged to form; a passagewa for gas leading from one of the gas'con Hits to theoutside openfing in said nozzle back of the tip.

"head, two gas conduits, members arranged to form a passageway for gas which passageway opens at one end mto said head -"duits, a tube within such passageway which itube also opens at oneend into said head but at the opposite end into the other'of Isaid conduits, a nozzle connected with the head=and having a passa e which opens at its inner end into the hea and a second passage which opens'at its inner end outside of said last-mentioned passageway,

sa eway opens at one end into said head and at the other end into one of said conduits,

also opens at one end into said head but at 'the oppositeend into the other of said conwhich at its' inner end through one members arranged to form a -passageway 'tothe sidd opcning in said nozzle. I v a 9. Thccombination, 1n a blow-pipe, of a;

which passageway opens at one end into head, twd'gas conduits, members arranged and at the other end into one of said c0nthe head, outside members arranged to form, a'passa'geway for gas leading from one of the gas conduits to the outside opening in the nozzle backbf the tip, and a valve in passageway which tube also opens at one "du'its, a nozzle connected withthe head and 'end gintothe head" and a secondpassage whichiopens at its inner endjoutside of the,

7; A blow-pipe comprising a chambered 8, Afib1'ow;pipe compr s nga chambered head, two gas conduits, members arranged f toform a passageway for gas which pas-Q a tnbe'within'such' passageway which tube I I ,duits, a detachable rioz'zle for the'head, such nozzle having a passage to open at its inner a v end into thehead and a second passage "side of' the nozzle, "and outside detachable" or'gas to lead from one of saidg'as conduitsi I I 7 chambered head, two gas conduits, 'members arranged to form a passageway for gas said head and at the other end into one} tip, a valve in said last-mentioned assageof said conduits, a tube Within such passage Way, and means to retain said va ve norway which tube also opens one end into mally in its closed position.

said head but at the opposite end into the RUSSELL r MAGNA other of said eonduits.- a nozzle connected m with the head and having a passage which LOUIS X' N E opens at its inner end into the head and wlmessesmto slgnature of a second passage which opens at its inner R end outside of the head, outside mem- FAIRBANKS- bers arranged to form a passageway for gas Witnesses to signature ofIL. G. C. leading from one of the gas conduits to the l ISAAC C. SUTTON,

outside opening in said nozzle back of the 1 AsAHnL W. GAGE.

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