7 inventions never needed to be improved
Continuous improvement and improvement of tools and household items makes our lives easier and more convenient. For example, if today someone tried to write an original pen 1868 from Sholes and Glidden, is writing a thesis, it will cover the hands countless calluses. And if you had to open a medieval castle, you were working for a long time with him before you learned how to make a sharp blow to the key that was just need to open ...
However, paradoxically, there are now a number of things that, despite the fact that since their invention has been more than a century, is still preserved in its original form without improvements.
1. Barbed wire
In the XIX century in the prairies of Oklahoma was quite difficult to make a fence for the protection of places grazing. For here there is not enough wood to build fences. What to do? Four local boys in the late 1870s came up with the design fence, consisting of rare supporting pillars and stretched barbed wire between them. Barbed wire was patented and has since released unchanged.
2. Bubble wrap
In the late 1950s, designers Alfred Fielding and Marc Chavannesu came up with a brilliant idea, perfect for aesthetic interior design of the space age: the cellophane volumetric tactile wallpaper! Unfortunately, plastic curtains with air bubbles and did not become fashionable. Then innovators decided to just change the purpose of the invention. In 1964 they patented their own "method of manufacturing laminated cushioning." Thus, bubble wrap (for English - bubble wrap) has become the ideal way to keep the fragile and highly valuable items during transport. This package has been widely used due to its practicality and low cost.
3. Rocking Chair
A rocking chair is not so old as you think. These chairs began to appear in the early 18th century in the USA and are still popular with people suffering from diseases of the back or musculoskeletal system. It is not just soothing swing. Rocking chairs automatically adjust your center of balance to someone who sits in them, every time he held a comfortable position.
4. Clips
Construction of a thin wire, which flooded the patent offices in the late 19th century, there were all sorts of shapes - in the form of wings, triangles, pretzels and so on, but the appointment they had the same thing: to hold a certain number of sheets of paper. All of them have been patented but the form that we are used to for 100 years. Standard oblong design "Pearl", has disputed origins, nevertheless defeated all other, throwing them in a box of history.
5. Teapot
Archaeologists believe that the kettles were invented during the reign of the Chinese Yuan dynasty, which began with 1279. The first teapots were made of clay, and probably have been modified over the years. It is believed that the original teapots were designed for one serving, so the appointment stands nose, directly from people whose drinking and sipping tea. Today you can buy a teapot made of porcelain, glass, paper or titanium. But its simple and perfect design, consisting of a handle, lid and spout, remained unchanged for hundreds of years.
6. Fly-beaters
Handle and small dense grid at the end. It is a primitive but effective device is in almost every home, and it is indispensable in the summer months to combat flies, mosquitoes and wasps. "Killer on the fly" was patented in 1900 by Robert Montgomery. This man was a public health worker in Kansas and his invention popularized by killing flies to stop the spread of disease. Oddly enough, but such a primitive fly swatter was very effective weapon against insects shifty.
7. Mousetrap
God forbid your house zavedutsya mouse. Get rid of them is a real problem. And if the tenants do not have a cat who is not averse to hunt mice, the best way would be a mousetrap. There was a time when the mice were scary parasites: these crafty animals were a real threat to children and food, as well as carriers of various diseases, until the plague. Fortunately, in 1894, William Hooker invented the mousetrap spring. And in 1903, John Mast made constructive improvement, making it safer to the download bait. Its design mousetrap is still in use.
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