| 摘要 |
PURPOSE:To prevent the wasteful use of oxygen and acetylene and to improve safety and a working efficiency, by opening and closing an electromagnetic valve through making and breaking of a switch so as to meet a using condition of a nozzle. CONSTITUTION:A microswitch 11 is incorporated in a nozzle placing table 10 situated on the side of a case 1. With a nozzle 13 placed on the nozzle placing table 10, the microswitch is turned ON, electromagnetic valves 8 and 9 are simultaneously closed to shut off the flow of oxygen and acetylene. With the nozzle 13 removed from the nozzle placing table 10, the microswitch 11 is turned OFF to open the electromagnetic valves 8 and 9. This elminates the wasteful use of oxygen and accetylene and permits the prevention of the occurrence of a risk of a burn if a trouble should happen. |
