| 摘要 |
PURPOSE:To secure a specified amount or more of carbon dioxide gas all the time and to eliminate inconvenience in working, by measuring the weight of a gas bomb, and detecting the fact that the amount of the carbon dioxide gas in the gas bomb gets lower than the preset remaining amount. CONSTITUTION:The rewinding force of a constant-output spring and the weight of a poise are set at a force, which is in balance with the total weight of the weight of a vacant bomb including a gas-flow-rate adjuster, weight of a mounting table 2 and the preset remaining amount of the gas. When the unused bomb is mounted on the mounting table 2, the mounting table 2 overcomes a mounting- table pushing-up force and is lowered. A lever 8 becomes the state shown by a dotted line in the Figure. A limit switch 17 is actuated. With the consumption of the gas, the weight of the bomb is decreased. When the sum of the weight of the remaining gas and the weight of the bomb becomes smaller than the mounting- table pushing-up force, the mounting table 2 is pushed up and the limit switch is released. As a result, the carbon dioxide gas of a specified amount or more is always secured, and the hindrance of working is avoided. |
