| 摘要 |
This selective flusher for water closets has a horizontal base plate, the front end of which is secured to the top of the flush pipe by the valve seat. This base plate has a corresponding opening at the front end thereof to allow passage of water through the flush pipe, a fulcrum post and fulcrum pin at the midportion thereof, and a tail guide at the rear thereof. A generally S-shaped valve lever is normally seated on the fulcrum pin and a flush valve is secured to the downwardly extending front end thereof to normally close the valve seat. At the front portion of said S-shaped valve lever is adjustably secured a gauge float, while at the midportion thereof is disposed a main-float two-thirds of which is to the rear of the fulcrum pin while one-third thereof is to the front of fulcrum pin. Said S-shaped valve lever has a vertical slot at the midportion thereof into which a catch plate is pivotally mounted. The catch plate has a downwardly extending tail portion having a forwardly extending tip and a rounded recess upwardly of said tip. This catch plate is connected by a pair of chains to a trip plate which is mounted off-center to the shaft of a trip lever. The actions of the generally S-shaped valve lever, the gauge float, main float and catch plate regulates the lifting distance of the valve from the valve seat and the duration of closing of the valve in accordance with the selective flushing desired or needed.
|
