Патент USA US2404590код для вставки
My 23, 19%. D. NANTZ I HEAT CONCENTRATTNG NOZZLE PROTECTOR FOR HEATING CUTTING, AND WELDING TORCHES, AND THE LIKE 2,404,590 ‘ Filed Aprilr'2o, 1945 33 '13 / I 1~I ‘Q II @K I .NKUNI NI I I I I 51 I .a , I I $0 Q Q. ‘Q “m,Q\\\\§ I ...7.,~» WNQw. NPMmVQ,N i)Lw NW)d1.m%a»m)-IMENQ I nQNuNHt. I IWit 0ma» 2MN‘ W W n .Q M Q .. w MN.J9MA mNw?i r, Ft.Q; D mm M ?nQN __ . I. ' WITNESSES. °Q 9 M20Q ?? _ I.’ . 5NI “W m ‘I Patented July 23, 1946 I q‘ . f ' 2,404,590 UNITED [STATES PATENT foFFicE HEAT CONCENTRATING NOZZLE PROTEC-n TOR FOR HEATING, CUTTING, AND WELD ING TORCHES, AND THE LIKE . Randolph Delbert Nantz, Orange‘, Tex. Application April 20, 1943, Serial No. 483,722. 2_Claims. , (01. 158-214) I _ 1 r This invention relates to heat concentrating ' nozzle protectors useful in connection with weld ing torches and the like. _ ' , The nozzles of welding torches are delicately formed with multiple minute discharge outlets at 6 ' 2 Fig. III, is a cross-section taken as indicated by the angledxarrows III-III in Fig. II; and Fig. IV "is a perspective view of the heat con centrating nozzle protector detached from the torch. > ‘ their tips at which a combustible mixture of acetylene, propane, natural gas, or the like and oxygen is forcibly projected; and are usually .con The welding torch illustrated in Fig. I for con venience of’ exempli?cation herein has a grasp handle I with separate longitudinal flow ducts or structed from relatively soft non-corrosive metal :channels (not shown) for acetylene or other in such as brass, copper or bronze. Through rough 10 ?ammable gas, and oxygen delivered under pres handling of the torches in use, the nozzle tips are sure through supply tubes (not shown) for the very often dented or otherwise damaged, with re connection of which nipples 2 and 3 vare provided sultant distortion of the discharge ori?ces, which at‘ the rear; end of said handle. Integral with for correction, ordinarily entails entire replace they handle I at theforward end thereof is the ment of the nozzlev parts at considerable cost and 15 .body II of a'valve, the stem of which is operable delay. Moreover, in heating, cutting and weld ing, the nozzle ori?ces invariably become. clogged by ?ying rust, scale and dirt from the metal be ing burned or welded, so that frequent disas sembling and cleaning is required for mainte nance of the torches in e?icient working condi tion. ' .by means of an overlying press lever 5 to con-' currently control the flow of the oxygen incident :toqthe use ‘of the torch. Leading from’ the front *end of the valve body .4 are two parallelpipes ' 20 6 and 'I by which the acetylene and the oxygen 'are conducted to the nozzlerheadr 8 of the torch, said pipes communicating by way of passages 9 and I0 with the vertical bore II of said head. The chiefaim of my invention is, to obviate the above drawbacks. This desideratum I' attain in The nozzle- of the torch. is ofmultipartitecon practice as hereinafter more‘ fully disclosed, 25 struction, ‘i. e.;».consists of an inner core piece or through provision of a simple and inexpensive ‘ jet ‘component I2, and an outer or enclosing heat concentrating nozzle protector in the form of tapering shell component I3. Somewhat below a tube of steel or other relatively hard metal or its top the jet component I2 has an integral cir material, which is securable to the torch and com cumferential enlargement, or collar I5 whereof pletely surrounds the nozzle tip, being somewhat 30 the upwardly-tapering end snugly ?ts into a cor larger in diameter than said tip to form an an respondingly-tapered seat at the mouth of the nular interval around the latter, and having pendant externally threaded neck I 6 of the head. apertures or ports at intervals of its length‘ so Extending axially through the jet component I2 that air may enter into and be drawn down to of the nozzle is a duct I ‘I through which the ward the burning end of the nozzle through said oxygen passes downward from the hollow of the interval under the suction created by the ?ame head 8 to the nozzle tip. Below the enlargement blast, to divert ?ying rust, scale and/or dirt from or' collar I5, the jet component I2 is ?rst the metal being burned or welded away from the diametrically reduced as at I8 and then tapered nozzle tip, and at the same time concentrate the as at‘ I9, with resultant provision of an annular heat of the flame at the nozzle tip. 40 gas ?ow passage 20 between it and theshell com A further aim of my invention is to secure the ponent I3, the tapered portion being fluted as at above advantages in a heat concentrating pro 2|. At the top the shell component I3 is formed tector which acts in the further capacity as a with an external circumferential ?ange 22 which means to hold the component parts of the nozzle abuts the bottom or shoulder of the collar I5 on assembled with the torch. - Other objects and attendant advantages will appear from the following detailed description of the attached drawing, wherein Fig. I is a view in 45 the jet component I2, said shell component being cylindric except toward its bottom where it is tapered to conform more or less to the shape of the lower end of said jet component. After entry side elevation of a well known and widely used into the nozzle head 8, the acetylene gas passes type of oxy-acetylene cutting torch embodying 50 down through a series of small circumferentially the heat concentrating nozzle protector of my in arranged substantially vertical ducts 23 in the vention. collar I5 of the jet component I2 into the annular Fig. II is a fragmentary view in longitudinal space 20, and ?nally through the small restricted section of the burner tip end of the torch with ori?ces 25 at the tip end of the nozzle jointly the heat concentrating nozzle protector in place. 55 formed by the ?uting 20 of said Jet component 2,404,590 3 ori?ces of said nozzle, but as a screen around the flame to concentrate the heat‘ at the nozzle tip. and the contiguous wall of an axial opening 26. at the bottom of the shell component l3, to meet with the oxygen issuing from the discharge end of The protector 21 moreover serves as a means to hold the nozzle parts in position on the torch by ‘Y the duct [1. virtue of taking the place of a nut (not shown) I Having now briefly set forth the construction of the torch, I will describe the heat concentrat which ordinarily serves in that capacity. From the foregoing it will be seen that the heat retaining nozzleprotector of my invention is not ing nozzle protector with which my invention is, more especially concerned, the same being com prehensively designated by the numeral 21, in the drawing. .. » j ~~~ 4 . only simple and inexpensive to produce in quan ,.tity, but applicable to standard types of welding. - torches without necessitating any structural As shown, this protector is in the form of a tube with a cylindric bore, which, in practice, is fashe' " changes-in them or requiring any modi?cation in their normal mode of operation. ioned from a relatively hard material or metal. preferably steel, and shaped to approximate the. J outside con?guration of the shell component l3, of the torch nozzle, that is to say, made with its upper portion 28 cylindric, andwithitslloWBnpnri tion 29 slightly tapered. It is to be noted that . . . the protector 21 extends to a substantial distance beyond the nozzle tip, and that its internal di mension is slightly larger than the outer dimenf sions of the shell component I3 of the'nozzle so that a coextensive narrow outwardly-?aring an nular inter-space 30 is provided between said tube Having thus described my invention, I claim: 1. A tubular heat concentrating protector for a welding torch or the like having a nozzle head with a threaded neck, and a nozzle with a circum ferential ?ange at one end, said protector being vsubstantially co-extensive with and completely surrounding the nozzle with attendant formation of_an intervening annular air space, having air inlet ports at longitudinal intervals, an internal circumferential shoulder adjacentits top to bear against the .?ange of the nozzle component, and and sleeve component. At its upper end the pro 25 being there internally threaded for screw engage ment with the threads of the nozzle head. tector 21 has a polygonal enlargement St for 2. A tubular heat concentrating protector for wrench application, with a circumferential in use with a welding torch or the like having a noz~ ternal shoulder 32, which, see Fig. II, bears up zle head with a threaded neck,'and a nozzlein ward against the flange 22 of the shell component l3 thereby ‘to hold the latter and the jet com 30 cluding a jet component with a circumferential " - 1 ponent l2 assembled with the torch. As shown enlargement at one end'thereof ?tting into-the neck, and a surrounding tapering shell compo in Figs. II and III the enlarged upper end'of the nent with’a ?ange at one end to bear against the protector 21 is internally threaded at 33 for the circumferential enlargement of the jet compo: purpose of screw engagement with the pendent threaded neck l6 of the nozzle head'8. At suit 35 nent, said protector being substantially co-exten sive with and. completely surrounding the nozzle able intervals longitudinally and circumferential with attendant formation of anoutwardly-?aring 7 ly, the body portion of the protector 21 is pro intervening annular air space, having vair inlet vided with apertures 35 through which-air is apertures at longitudinal intervals, an internal drawn by-the suction created by'the ?ame blast at shoulder adjacent its top to bear the nozzle from the exterior into the interval 30 40 circumferential against the ?ange of the sleeve component of the for discharge eventually at the burningend of the nozzle. This discharge .rush'of air annular'ly » nozzle, and being there internally threaded'for screw engagement of 'the'neck of the nozzle head of the nozzle operates not only'to blow rust or scale and dirt'f'rom the metal being burned or welded to prevent entering and clogging the jet ' to holdythe nozzle parts assembled with the torch. RANDOLPH .‘DELBERT NAN'TZ.