| 摘要 |
PROBLEM TO BE SOLVED: To freely operate suctioning of a float to a magnet and removal of the same from the magnet in a constant oil gage freely from the outside. SOLUTION: When a closing button 15 mounted on a cover plate 11 is pushed down to lower a float arm 8 on the side where an opening/closing valve 6 is provided, an inflow port 5 is forcedly closed with the opening/closing valve 6, and a float 7 at the other end of the float arm 8 is lifted in a direction separated away from an oil level and is captured by a magnet 10, so that in this state lamp oil in a constant oil level chamber 2 can be drawn out when new supply of lamp oil is not performed by releasing a drain plug 4.
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