| 摘要 |
PURPOSE:To shift automatically a cylinder having gas pressure reduced to a reserve cylinder by a method wherein a shift lever having a step for operating two valves and a diaphragm acting in proportion to change of gas pressure are combined. CONSTITUTION:Supply pipes from a main and a reserve cylinder are introduced into a right and a left valve system 18, 19. A shift lever 6 is stepped and corrugated and is revolved horizontally by the operation of a shift handle through an eccentric axis in a right and left direction. On one hand, a medium-pressure connector 13 comes is contact with a diaphragm. When the left valve system 18 is used, the diaphragm is pushed down by the reduction of gas pressure, the medium pressure connector 13 also synchronizing with the diaphragm goes down, the whole shift lever 6 is pressed and the right valve bar 20 also is pushed down. Therefore, a nozzle which has been shut is opened, gas is brought in from the reserve cylinder and the cylinders can be shifted automatically. |
