OXYGEN CUTTING TORCH Russian patent published in 1998 - IPC

FIELD: metal working and metallurgy industries, civil engineering. SUBSTANCE: oxygen cutting torch handle has unions to feed cutting oxygen and fuel gas and gas supply and outer and inner flame cutting nozzles secured in head. Nozzles are installed with clearance in between forming narrow ring slot for mixing the gases. Oxygen cutting torch has heating oxygen union. Mixer is secured in head and is provided with central channel to supply cutting oxygen and calibration holes to supply fuel gas and heating oxygen connected with narrow ring slot. Width of ring slot is equal to diameter of fuel gas calibrating hole and its length is 5-10 fold the thickness of slot. EFFECT: improved stability of oxygen cutting torch against backfires, possibility of operation at high, mean and low pressures of fuel gas. 1 dwg