| 摘要 |
PURPOSE:To make it possible to adjust the stopping water level in a stepless manner by forming a link for supporting an arm of a float by an expansible ink. CONSTITUTION:An expansible link 18 is composed of a pair of accepting member 19 and 20 and an operating member 21. both accepting members 19 and 20 have female screws 19a and 20a respectively whose thread cutting directions are mutually reversed, and are pivotally connected to an arm 9 and a lateral link 6, resepectively. The operating member 21 has at its central part a nut-like engaging part 21a, and also has at its both ends male screws 21b and 21c whose thread cutting directions are mutually reversed. The male screws 21b and 21c are fastened to the male screws 19a and 20a of the above described both accepting members 19 and 20. By rotating the operating member 21, the entire length of th expansible link 18 can be adjusted, and the arm 9 is rotated around a pin by the adjustment of the link 18 to lift and lower the float 13 and to adjust the stopping water level. As a result, it is possible to adjust the stopping water level, and alsot to greatly change the stopping water level by a slight rotating operation of the operating member 21. |
