US932739A

US932739A - Device for severing metals.

Info

Publication number: US932739A
Application number: US35099007A
Authority: US
Inventors: Ernst Wiss
Original assignee: Chem Fab Griesheim Electron
Current assignee: Chemische Fabrik Griesheim Elektron
Priority date: 1907-01-05
Filing date: 1907-01-05
Publication date: 1909-08-31
Anticipated expiration: 1926-08-31

Description

E. wIjss. DEVICE FOR SEVER-ING METALS. I APPLICATION PH-ED JAN. 5, 1907.

932,739. Patented Aug. 31. 1909 bxyye n 2 357a: 5 oxyyero Jnven for Ans PAEENT omen ERNST W183, QB GBm$HEIM-N-THE-HAIN,- GERMAN Y, ASSIGNOR TO OHEHISCHE EABRIK Gnmsnnm Emerson, GERMANY.

l0 mrxtnrritshfhiri"oafygen andpnre oxygen- 1 in theferm of ankle jet at a suitable pressure, toatiiefpfart wherethe cutting is to be efi'ected,"th e metal being oxidized and "the oxidfdispersed. In the devices of this kind hitherto known for-carrying out this operationf-a heating flaineiand a jet of oxygen at high pressure havebeen supplied to, the part to be severed,

This-flame andthis jet have not been eoinci-. dent-in their action as regards either space,

oriti'me, for the flame of combustible-gas and oxygen was first suipplied to the re quired lace, and a jcto oxygen was supplied a ter shiitingathe said .jet of gas and oxygen. This separation of thetwo operations as regards time and-is ace is based on the erroneous impressiontliat the heating flame plays a part,-during the severing operationfwliich it does not play,;for thetime of heating, es .ecially in the cascofthick' pieces of meta is not sniiicient, to pre-heat the piece of metal, to the temperature of combustion despite the comparatively high speed of severance. In the process, the

combustion, which progresses at a uniform,

rate, efiects first the required preheating of the metal at the cutting place, the heating flame startin the severance a: e. sufficiently pie-heating tie starting" point While, when the lace of severance has been cooled by the jet'of oxygen the operation hast o be started again. In such a device it is therefore quite possible to cool the place ofiseverance by the blast of oxygen, v 1

llie present invention has for its ob ect to'obviate this disadvantage by causing. the supply of the heating'flame and the oxygen jet to coincide both as regards time and place. The heatingfiame'need notgkeep the full thickness of the metal to the ten' peravtureoi? combustiom'but only thesharply undercut front edge or theplace ofi stverance and the .coelingot' the place of, seven l thiceification 03 Letters Patent. a ucauonmaaanu 5, 1907; Serial No. 350,990.

3; this way 0F FRANKFORT-ON-THE-MAIN, GERMANY, A- CORPQRATION 0F ance by the jet of oxygcn'and the interruption of the cut are thus avoided.

In order to sufficiently heat, by'mcans of a single apparatus, any thickness of metal, it IS necessary to vary thequantity of heating gas mixture and to adapt the width of the nozzle to the quantity of gas mixture then used.

This invention provides a device by means of which this object is attained in'a simple manner by making the oxygen nozzle capable of movement to effect the adjustment, according to requirements, of the annular opening through Which the gases for the heating flame issue.

1n the accompanying drawing, Figure-1 is a verticalsection of the device in accordance with thisinvention, and Fig. 2 a horizontal section on the line ab of Fig. 2.

Patented Aug. 31, 1909.

' In external appearance the device rc sembles a Daniel burner, but differs therefrom inthat the inner supply tube isslidably arranged: in relation to the outer tube a and that both the inner surface at the end of the outersupply tube and the outer surface of the inner tube are conical, but have not the" same ta er, the outer tube consisting essentially o a two-part casing, the: body portion 2 and the detachable nozzle 6,wliich is socketed and screw-threaded to receive a' screw-threaded projection of the casing. The inner tube3 projects through a stufling box at one end of the casing and terminates ina detachable nozzle 4., and the outer casing or tube is contracted internally at the open end and the inner tube is also tapered at the outer end so that there is an intervening annular space, the'inner tube being maintained concentric with the'outer tube by means of external wings or lugs 5. Through a tube 1. a mixture of combustible gas and oxygen is supplied to the outer burner tube 2 whileanother tube 3 supplies oxygen at a regulated pressure.

Before using the device, the tubel is use ed inside the tube 2, and nozzle 6 to such an extent that the nozzle 4, projects beyond the outer'nozzle 6, thereby insuring that the 31:

of oxygen issuesas near as 'ossible to metal to be 0 rated on .whi e the annular opening for t e: supply of combustible-gas and oxygen is more, or less, throttled. In the eifiux velocity of the' mixture of gases for the flame is so regulated that it is greater than the then prevaillng speed of ignition and back firing is prevented.

*Bymeans of the arrangement in accordance with this'invention' it is possible to cut.

metal of any thickness, the width of cut being about two millimeters While no inten ruptlon of the work null-take place.

"i It will be noted that the tube to which the oxygen is supplied is the internal tube and that it projects beyond the external tube or easing. This is a matter of great importance, maintaining the oxygen jet in its orig inal shape at as'greatr a distance as possible from the nozzle through which the burning mixture esezipcs 'as this results in a clean cutting or severing of'the metal which cannot be attained if the oxygen is brought into intimate contact with the burning mixture before the latter issues from the outer tube or easing. In other-Words I have found that by mamtannng a et of oxygen beyond the Having now particularly described and ascertained the nature of my said invention andin Wliatinanner the same is to be per-' formed I declare that What I claim 1s 1; ,The combination in av burner for severjecting at said end beyond the contracted end of the'casing, and means for supplying said tube with oxygei'l, for the purpose set forth.

9. The combination in a burner for severing -1netals, of a tube or casing open and internally tapereo at one end and means for supplying a mixture of combustible gas and oxygen thereto, and a tube Within said casing externally tapered at one end and proj'ectingat said end beyond the contracted end of the casing, and means for supplying said tube with oxygen, said tube and casing relatively adjustable to vary the dimensions of the discharge opening around the inner tube, for the purpose set forth.

3. The combination in a burner for severing metals of a casing provided with a detachable nozzle. contracted internally at the open end and means for connecting said casing with a supply of combustible gas and oxygen, and a tube Within said casing pro vided with a detachable nozzle tapering externally and projecting beyond the end of the casing and longitudinally adjustable in respect to the casing and connnunicating With means for supplying oxygen thereto.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

nnus'r WISS.

Witnesses FRANZ l-lAssn-wi'ncn,

-ERWIN l )1 mug r..