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"HOME TECH": The Inner Workings - College Essays

"HOME TECH": The Inner Workings

The Toilet
Yes...those tales you've heard are true. The toilet was first patented in
England in 1775, invented by one Thomas Crapper, but the extraordinary
automatic device called the flush toilet has been around for a long time.
Leonardo Da Vinci in the 1400's designed one that worked, at least on
paper, and Queen Elizabeth I reputably had one in her palace in Richmond
in 1556, complete with flushing and overflow pipes, a bowl valve and a
drain trap. In all versions, ancient and modern, the working principle is
the same.

Tripping a single lever (the handle) sets in motion a series of actions.
The trip handle lifts the seal, usually a rubber flapper, allowing water
to flow into the ...

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the toothpaste pump. Sick and tired of toothpaste squeezed all
over your sink and faucets? Does your spouse never ever roll down the
tube and continually squeezes it in the middle? Then the toothpaste pump
is for you!

When you press the button it pushes an internal, grooved rod down the tube.
Near the bottom of the rod is a piston, supported by little metal flanges
called "dogs", which seat themselves in the grooves on the rod. As the
rod moves down, the dogs slide out of the groove they're in and click into
the one above it. When you release the button, the spring brings the rod
back up carrying the piston with it, now seated one notch higher. This
pushes one-notch's-worth of toothpaste out of the nozzle. A measured
amount of toothpaste every time and no more goo on the sink.

Refrigerators

Over 90 percent of all North American homes with electricity have
refrigerators. It seems to be the one appliance that North Americans can
just not do without. The machine's ...

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"HOME TECH": The Inner Workings. (2008, May 7). Retrieved April 19, 2024, from http://www.essayworld.com/essays/HOME-TECH-The-Inner-Workings/83259

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PAPER DETAILS

Added: 5/7/2008 10:46:12 AM
Category: Miscellaneous
Type: Premium Paper
Words: 1224
Pages: 5

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