Fire sprinkler system, the entire systems of pipes and sprinklers intended for fire suppression within buildings
In 1812, British inventor Sir William Congreve patented a manual sprinkler system using perforated pipes along the ceiling.
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Back in the US, Frederick Grinnell, who was manufacturing the Parmelee sprinkler, designed a newer and more effective version which became known as the Grinnell sprinkler.
Frederick Grinnell improved Parmalee's design and in 1881 patented the automatic sprinkler that bears his name.
The physics of the operation of the pop pop boat is very similar to that of the "Feynman sprinkler," a submerged sprinkler which is seen to turn weakly or not at all as water is sucked in through it.