| 摘要 |
C A N A D A ROGERS, BERESKIN /A PARR TITLE: WATER PUMP INVENTOR: SAMUEL DICK A pump has a casing defining a pumping chamber. A liquid inlet enabling liquid to enter the casing extends through the casing and includes a one-way inlet valve. A liquid outlet tube extends through the top of the casing to a location adjacent the bottom thereof. A U-shape control tube has first and second limbs joined at their lower ends, with the first limb located within and extending along the outlet tube and with the second limb located in the casing extending vertically. The top of the second limb is below the top of the casing. A first air inlet opens into the chamber. When air is supplied to the chamber and the chamber is submersed in sufficient liquid, the liquid inlet and U-shape control tube control cyclic operation of the pump, causing liquid to be pumped out of the liquid outlet. |
