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US 4,916,270 AGranted
Mig welder cutting head attachment
AssigneeCentury Mfg. Co.
InventorsJohn C. West, Terry A. Prentice
Life of this patent
Estimating the term…
Abstract
A metal cutting nozzle attachment for an inert gas welder converting the welder into a metal cutting apparatus having the welding flux core wire energized to become the cutting element and the nozzle being arranged to cause a sufficient increase in the velocity of an air stream passing therethrough to clear away the molten or cut metal.
Claims1
A nozzle structure for cutting metal in connection with a welder cable of an insert gas welder, said nozzle structure comprising
- a housing having a tapered outlet passage,
- an electrode passing through said passage,
- means providing a metal cutting voltage energizing said electrode,
- means passing air under pressure through said cable and into said nozzle,
- a chamber in said nozzle receiving said air,
- a restrictive orifice between said chamber and said outlet passage causing a build-up of back pressure of air in said chamber and causing air acceleration of said air therefrom through said outer passage with sufficient velocity to flush away cut metal.
3 more elements
Dependencies are inferred from the claim text.