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The Toilet - Thomas Crapper SanitationYesthose tales youve heard are true The toilet was firstpatented in England in 1775 invented by one Thomas Crapperbut the extraordinary automatic device called the flush toilethas been around for a long time Leonardo Da Vinci in the1400s designed one that worked at least on paper and QueenElizabeth I reputably had one in her palace in Richmond in1556 complete with flushing and overflow pipes a bowl valveand a drain trap In all versions ancient and modern theworking principle is the same Tripping a single lever the handle sets in motion a seriesof actions The trip handle lifts the seal usually a rubberflapper allowing water to flow into the bowl When the tankis nearly empty the flap falls back in place over the wateroutlet A floating ball falls with the water level openingthe water supply inlet valve just as the outlet is beingclosed Water flows through the bowl refill tube into theoverflow pipe to replenish the trap sealing water As thewater level in the tank nears the top of the overflow pipethe float closes the inlet valve completing the cycle From the oldest of gadgets in the bathroom lets turn toone of the newest the toothpaste pump Sick and tired oftoothpaste squeezed all over your sink and faucets Doesyour spouse never ever roll down the tube and continuallysqueezes it in the middle Then the toothpaste pump isfor youWhen you press the button it pushes an internal groovedrod down the tube Near the bottom of the rod is a pistonsupported by little metal flanges called dogs which seatthemselves in the grooves on the rod As the rod moves downthe dogs slide out of the groove theyre in and click intothe one above it When you release the button the springbrings the rod back up carrying the piston with it nowseated one notch higher This pushes one-notchs-worth oftoothpaste out of the nozzle A measured amount of toothpasteevery time and no more goo on
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