| 摘要 |
A petrol cutting torch has a fuel mixer (12) located in a complimentary shaped recess (24) of the cutting head (10) and includes a recessed land (36) which is scored and partially defines an annular petrol chamber; an oxygen passage (44) passes through the mixer from an oxygen chamber upstream of the petrol chamber in the head to the nozzle (14), and a petrol passage (46) is provided between the land and the oxygen passage (44). |
