| 摘要 |
The invention is an apparatus for producing fountain displays which include moving variable-play fountain sprays and comprises one or more nozzles with dual entry or multi-entry ports which are mounted on one or more moveable floats and are connectable to a source of pressurized liquid through a control apparatus which includes an alternating valve and valve system for producing oscillating, stationary and intermittent nozzle dispersal streams. The moveable floats can be controlled to move by mechanically means or hydraulically by the thrust of one or more nozzle dispersal streams from an underwater nozzle or nozzles mounted below the waterline to thereby provide for complex movements of the various nozzle dispersal streams included in a particular fountain display.
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